Tektronix Cable Box SDA601 User Manual

User Manual  
SDA601  
Serial Digital Analyzer  
070-8913-03  
Warranty  
Tektronix warrants that the SDA 601 Serial Digital Analyzer will be  
free from defects in materials and workmanship for a period of  
one (1) year from the date of shipment. If any such product proves  
defective during this warranty period, Tektronix, at its option, either  
will repair the defective product without charge for parts and labor,  
or will provide a replacement in exchange for the defective product.  
In order to obtain service under this warranty, Customer must notify  
Tektronix of the defect before the expiration of the warranty period  
and make suitable arrangements for the performance of service. Cus-  
tomer shall be responsible for packaging and shipping the defective  
product to the service center designated by Tektronix, with shipping  
charges prepaid. Tektronix shall pay for the return of the product to  
Customer if the shipment is to a location within the country in which  
the Tektronix service center is located. Customer shall be responsible  
for paying all shipping charges, duties, taxes, and any other charges  
for products returned to any other locations.  
This warranty shall not apply to any defect, failure or damage caused  
by improper use or improper or inadequate maintenance and care.  
Tektronix shall not be obligated to furnish service under this warran-  
ty a) to repair damage resulting from attempts by personnel other  
than Tektronix representatives to install, repair or service the prod-  
uct; b) to repair damage resulting from improper use or connection to  
incompatible equipment; c) to repair any damage or malfunction  
caused by the use of non-Tektronix supplies; or d) to service a prod-  
uct that has been modified or integrated with other products when  
the effect of such modification or integration increases the time or  
difficulty of servicing the product.  
This warranty is given by Tektronix with respect to this product  
in lieu of any other warranties, expressed or implied. Tektronix  
and its vendors disclaim any implied warranties of merchantabil-  
ity or fitness for a particular purpose. Tektronix’ responsibility to  
repair or replace defective products is the sole and exclusive rem-  
edy provided to the customer for breach of this warranty. Tektro-  
nix and its vendors will not be liable for any indirect, special,  
incidental, or consequential damages irrespective of whether  
Tektronix or the vendor has advance notice of the possibility of  
such damages.  
EC Declaration of Conformity  
We  
Tektronix Holland N.V.  
Marktweg 73A  
8444 AB Heerenveen  
The Netherlands  
declare under sole responsibility that the  
SDA 601 Handheld Serial Digital Analyzer  
meets the intent of Directive 89/336/EEC for Electromagnetic  
Compatibility. Compliance was demonstrated to the following  
specifications as listed in the Official Journal of the European  
Communities:  
EN 55011  
Class A Radiated and Conducted Emissions  
EN 50081-1 Emissions:  
EN 60555-2 AC Power Line Harmonic Emissions  
EN 50082-1 Immunity:  
IEC 801-2 Electrostatic Discharge Immunity  
IEC 801-3 RF Electromagnetic Field Immunity  
IEC 801-4 Electrical Fast Transient/Burst Immunity  
High-quality shielded cables must be used to ensure compliance to the  
above listed standards.  
Table of Contents  
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
1
2
4
4
4
5
7
8
9
Supplying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Connecting the SDA 601 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SERIAL INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
AUX Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Keypad and Display Conventions . . . . . . . . . . . . . . . . . . . . . . .  
The On-screen Display (OSD) . . . . . . . . . . . . . . . . . . . . . . . . . .  
Preliminary Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Set the Date and Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Set the Battery Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Enable (Disable) Auto Power Off . . . . . . . . . . . . . . . . . . . .  
Disable (Enable) Timed LCD Backlight Turn Off . . . . . . .  
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
9
10  
10  
11  
11  
Operating Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Using Your SDA 601 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Analyzing a Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Watching a Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Displaying the Signal Level . . . . . . . . . . . . . . . . . . . . . . . . .  
Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Highlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Pulse Cross . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Presets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Software Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
13  
13  
14  
16  
19  
21  
22  
23  
24  
25  
25  
SDA 601 Serial Digital Analyzer User Manual  
i
Contents  
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
SDA 601 Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Menu Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Watch Menu (groups enabled) . . . . . . . . . . . . . . . . . . . . . . .  
Watch Menu (items enabled) . . . . . . . . . . . . . . . . . . . . . . . .  
Alarm Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
I/O Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Display Select Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Presets Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Utility Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
The AUX Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
RS-232/Printer Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Using the Watch Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Format Error Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Using the CRC Change Watch Group . . . . . . . . . . . . . . . . .  
27  
27  
27  
29  
29  
30  
31  
31  
31  
31  
35  
35  
36  
36  
36  
38  
Appendix A: Characteristics . . . . . . . . . . . . . . . . . . . . . . . . .  
Safety Standard Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Specification Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
41  
41  
42  
Appendix B: Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . .  
45  
Appendix C: User Service . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Battery Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
The BATTERY LOW Message . . . . . . . . . . . . . . . . . . . . . .  
Low-battery Shut Down . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Replacing the Batteries or Battery Pack . . . . . . . . . . . . . . .  
Replacing the Touch Memory/Timer Module . . . . . . . . . . . . . .  
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
47  
47  
47  
47  
48  
49  
49  
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Pulse Cross . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
I/O Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
51  
1
3
4
SDA 601 Serial Digital Analyzer User Manual  
ii  
Contents  
List of Figures  
Figure 1: Opening the Battery Compartment . . . . . . . . . . . .  
Figure 2: Connecting the SDA 601 . . . . . . . . . . . . . . . . . . . . .  
2
4
Figure 3: A Printed Analysis Report . . . . . . . . . . . . . . . . . . .  
Figure 4: The Default Watching OSD . . . . . . . . . . . . . . . . . .  
Figure 5: The Set Time display . . . . . . . . . . . . . . . . . . . . . . . .  
Figure 6: The Analyze OSD . . . . . . . . . . . . . . . . . . . . . . . . . .  
Figure 7: The SDA 601 “Watching” Display . . . . . . . . . . . . .  
Figure 8: Watch Errors Reported on the OSD . . . . . . . . . . .  
Figure 9: The SDA 601 Signal Level Display . . . . . . . . . . . .  
Figure 10: The Cursor Data Display . . . . . . . . . . . . . . . . . . .  
Figure 11: SDA 601 Menu Conventions . . . . . . . . . . . . . . . . .  
Figure 12: The OSD Setups/Horizontal Position Item . . . . .  
Figure 13: The SDA Number Keys . . . . . . . . . . . . . . . . . . . .  
Figure 14: The Cursor Data Display . . . . . . . . . . . . . . . . . . .  
6
8
9
15  
18  
19  
21  
22  
27  
28  
28  
1
List of Tables  
Table 1: RS-232 Connector Pin Assignments . . . . . . . . . . .  
Table 2: Serial Digital Video Input . . . . . . . . . . . . . . . . . . . . .  
Table 3: AUX Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Table 4: Signal Level Meter . . . . . . . . . . . . . . . . . . . . . . . . . .  
Table 5: Physical Characteristics . . . . . . . . . . . . . . . . . . . . .  
Table 6: Environmental Characteristics . . . . . . . . . . . . . . . .  
35  
42  
42  
43  
43  
43  
SDA 601 Serial Digital Analyzer User Manual  
iii  
Contents  
SDA 601 Serial Digital Analyzer User Manual  
iv  
General Safety Summary  
Review the following safety precautions to avoid injury and prevent  
damage to this product or any products connected to it. To avoid  
potential hazards, use this product only as specified.  
Only qualified personnel should perform service procedures.  
To Avoid Fire or Personal Injury  
Observe All Terminal Ratings. To avoid fire or shock hazard,  
observe all ratings and markings on the product. Consult the product  
manual for further ratings information before making connections to  
the product.  
The common terminal is at ground potential. Do not connect the  
common terminal to elevated voltages.  
Connect the ground lead of the probe to earth ground only.  
Replace Batteries Properly. Replace batteries only with the proper  
type and rating specified.  
Recharge Batteries Properly. Recharge batteries for the recom-  
mended charge cycle only.  
Use Proper AC Adapter. Use only the AC adapter specified for this  
product.  
Do Not Operate With Suspected Failures. If you suspect there is  
damage to this product, have it inspected by qualified service  
personnel.  
Do Not Operate in Wet/Damp Conditions.  
Do Not Operate in an Explosive Atmosphere.  
SDA 601 Serial Digital Analyzer User Manual  
v
General Safety Summary  
Safety Terms and Symbols  
Terms in This Manual. These terms may appear in this manual:  
WARNING. Warning statements identify conditions or practices that  
could result in injury or loss of life.  
CAUTION. Caution statements identify conditions or practices that  
could result in damage to this product or other property.  
Terms on the Product. These terms may appear on the product:  
DANGER indicates an injury hazard immediately accessible as you  
read the marking.  
WARNING indicates an injury hazard not immediately accessible as  
you read the marking.  
CAUTION indicates a hazard to property including the product.  
Symbols on the Product. These symbols may appear on the product:  
Double  
Insulated  
CAUTION  
Refer to Manual  
Battery Recycling  
This product contains a Nickel Cadmium (NiCd) battery, which must  
be recycled or disposed of properly. For the location of a local  
battery recycler in the U.S. or Canada, please contact:  
RBRC  
(800) BATTERY  
(800) 227-7379  
Rechargeable Battery Recycling Corp.  
P.O. Box 141870  
Gainesville, Florida 32614  
SDA 601 Serial Digital Analyzer User Manual  
vi  
Getting Started  
Please read the following statements before using your new SDA 601  
Serial Digital Analyzer. See the rest of this section for tips on supply-  
ing power, making preliminary settings, and connecting the instru-  
ment.  
WARNING. Install or replace batteries only with the instrument  
switched OFF and the AC adapter disconnected. Electrical shock or  
equipment damage can result.  
CAUTION. Do not attempt to operate the SDA 601 with an improper  
AC adapter. Damage to the instrument can result.  
For best results, use the AC adapter supplied with the instrument. If  
the supplied adapter is incorrect for the local AC power supply, con-  
tact your nearest Tektronix representative.  
The adapter voltage must be 9 to 15 VDC with an open-circuit voltage  
less than 18 VDC; the adapter connector must have the negative (–)  
polarity contact in the center.  
NOTE. Internal batteries are recommended when using an external  
power adapter. A loose adapter connector can cause the loss of some  
user settings and unexpected results the next time the instrument is  
powered on.  
The battery type, disposable or rechargeable, must be selected using  
through the Utility menu (see page 10). Failure to select the proper  
battery type can result in damage to the batteries and product.  
Replace the batteries only with standard AA batteries (1.2–1.5 V,  
nominal), or the Tektronix rechargeable battery pack listed on page 45.  
For more information, please contact your nearest Tektronix represen-  
tative or field office. In the United States and Canada, you can also  
call the Tektronix information number, 1-800-TEK-WIDE  
(1-800-835-9433), between 8:00 am and 5:00 pm Pacific time.  
SDA 601 Serial Digital Analyzer User Manual  
1
Getting Started  
Supplying Power  
The SDA 601 is DC powered. You may power it with the standard AC  
adapter, the optional 9.6 V NiCad battery pack, eight standard AA  
batteries, or a “BP” type battery pack with the correct voltage and po-  
larity. The external DC power connector is on the left side of the  
instrument.  
Figure 1: Opening the Battery Compartment  
To install AA batteries or the battery pack, open the battery compart-  
ment of the SDA 601 by pressing down on the cover and sliding it in  
the direction of the inscribed arrow, as shown above. When the cover  
tabs line up with the slots in the case, lift the cover away from the  
instrument. Install batteries in alternating directions as indicated by  
the graphic molded into the “floor” of the battery compartment. If us-  
ing the optional battery pack, take the time to identify both contacts  
and install the pack properly.  
When selecting a power source for your SDA 601, please remember:  
H Attempting to use an improper AC adapter can cause permanent  
damage to the instrument. USE AN APPROPRIATE DC POWER  
SOURCE ONLY: Voltage must be between 9 and 15 VDC; the  
center contact of the connector must be NEGATIVE polarity; and  
open-circuit voltage must not exceed 18 VDC. For best results, use  
the adapter supplied with the instrument.  
H There is no need to remove the optional NiCad battery pack for  
recharging. The SDA 601 will “trickle charge” the battery pack  
whenever the standard AC adapter is attached and the instrument  
SDA 601 Serial Digital Analyzer User Manual  
2
Getting Started  
is switched off. It can take up to 16 hours to fully charge the bat-  
tery pack. Note that charging will occur only if the adapter sup-  
plies at least 12V; make sure that the adapter you use is  
appropriate for the local AC supply.  
H AA batteries are not included with the instrument; buy them local-  
ly. Rechargeable AA batteries may be used, but they are NOT re-  
charged automatically. To recharge AA batteries, remove them  
from the instrument and use an appropriate charger. For safety,  
read and follow the battery charger instructions. Do NOT attempt  
to recharge standard alkaline batteries.  
H After three minutes with no key press, the LCD back light will be  
dimmed to save battery charge. (This may be disabled through the  
Utility/Diagnostics/Power Manage menu; see page 33.)  
H To guard against battery discharge if you forget to turn the  
SDA 601 off, enable Auto Power Off through the Utility/Diagnos-  
tics/Power Manage menu (see page 10).  
H The SDA 601 can sense low battery voltage. It will warn you when  
the charge is sufficient for approximately ten more minutes of op-  
eration. The instrument will shut itself down when the battery volt-  
age becomes too low for reliable operation. See the Battery hints  
in Appendix C, beginning on page 47.  
The ON key toggles instrument power On and Off.  
NOTE. If the instrument is operating with low batteries, it may turn  
itself off and on. The batteries should be replaced or recharged  
depending on battery types.  
SDA 601 Serial Digital Analyzer User Manual  
3
Getting Started  
Connecting the SDA 601  
Figure 2: Connecting the SDA 601  
Connect the instrument as shown in Figure 2. The OPTION connector  
is reserved for later versions of the instrument. Note that the SDA 601  
has many capabilities and features, and you may wish to gain familiar-  
ity with it by first connecting it directly to a serial digital, component  
video signal generator such as the Tektronix TSG 601, an analog video  
monitor, and—if convenient—a compact printer, such as the SeikoD-  
PU 411 printer (Tektronix part number 119-4594-00), available from  
Tektronix distributors and through TekDirect.  
SERIAL INPUT  
Connect the instrument to your system through the SERIAL INPUT  
with 75W coaxial cable. Note that the SDA 601 has internal, active  
termination. The signal path that ends with the SDA will be properly  
terminated only when the instrument is switched on.  
AUX Output  
H Lets you view the picture for convenient source identification.  
H Can contain the On-screen Display (OSD; see page 8), which  
shows the most recent Watch or Analyze results one page at a  
time—instead of one item at a time as on the SDA 601 display.  
SDA 601 Serial Digital Analyzer User Manual  
4
Getting Started  
H With Pulse Cross enabled (see page 24), lets you “see” the con-  
tents of the vertical and horizontal interval portions of the serial  
video signal.  
H Can include Cursor cross hairs for convenient positioning of the  
Cursors (see page 22).  
H When Highlighting (see page 23) is turned on, can help you locate  
and identify errors in the picture, or the digital encoding of the  
signal.  
The AUX output signal may be thought of as “pseudo video.” It is  
derived from the serial input signal, converted to analog by an unfil-  
tered 5-bit DAC. The signal can be the Y, RY, or B–Y component.  
Please see page 35 for more information about the AUX output.  
RS-232 Interface  
Connect an ASCII, serial printer to the RS-232 connector to create  
“hard copy” analysis reports, or to log errors detected during a Watch  
session. See page 35 for the connector pinouts, and other necessary  
communications settings. With a printer connected, you can  
choose—through the Alarm menu—to have the SDA 601 log every  
error as it occurs, or to print a Watch report every ten seconds. This  
will permit unattended monitoring of your system. See page 20 for  
more information.  
To test your printer connection and settings, perform a signal analysis  
by pressing Analyze. Then, press Shift-Analyze. The printer should re-  
spond by printing an analysis report that resembles the one shown in  
Figure 3.  
SDA 601 Serial Digital Analyzer User Manual  
5
Getting Started  
Figure 3: A Printed Analysis Report  
The RS-232 interface is also designed to support in-field upgrade of  
the operating software. Information regarding any such upgrades will  
be available from your Tektronix representative or field office.  
SDA 601 Serial Digital Analyzer User Manual  
6
Getting Started  
Keypad and Display Conventions  
Please see the Instruction card (p/n 070-8912-00) supplied with your  
SDA 601 for a “tour” of the keypad and an explanation of the display  
symbols. For your convenience, the following panels are taken from  
the card.  
SDA 601 Serial Digital Analyzer User Manual  
7
Getting Started  
The On-screen Display (OSD)  
The OSD is a 12 line, 24 column display containing results from an  
SDA 601 Analyze or Watch session. It can be superimposed on the  
AUX output and viewed on an attached video monitor. Toggle the  
OSD On/Off with the Insert On/Off key. The default OSD will resemble  
Figure 4 when the instrument is in Watch mode. You can control sev-  
eral OSD characteristics (size, color, screen position) through the Util-  
ity/OSD Setups submenu; see page 32.  
Figure 4: The Default Watching OSD  
The symbols on the bottom line of the OSD have the following mean-  
ings:  
H The rotating line in the lower left indicates that Auto Power Off is  
enabled.  
H The musical note symbol indicates that Alarms are toggled On  
with the Alarm key or through the Alarm menu. This symbol can  
appear even when the beeper and print errors items in the Alarm  
menu are set to Off.  
H The “W” appears when the instrument is in Watch mode.  
H The reversed “E” means that an error is detected.  
SDA 601 Serial Digital Analyzer User Manual  
8
Getting Started  
H Similar reversed “S” and “SL” icons (not shown) will appear when  
SDA 601 keypad is shifted and shift locked.  
H The down arrow in the lower right indicates that the B key may be  
used to reveal another page. An up arrow will appear if the Y key  
may be used.  
The Analyze OSD is similar; see Figure 6, on page 15.  
Preliminary Settings  
Once the SDA 601 is up and running, you should choose some settings  
depending on how you’ll be using the instrument. These settings are  
made through the Utility menu. Invoke the Utility menu by holding  
Lock Out down while pressing the ON key (when the LCD says “Watch-  
ing” or “Idle”). Then follow these directions to set the Battery Type  
and enable Auto Power Down (if desired).  
Set the Date and Time  
1. Once in the Utility menu, use the Y and B keys to scroll to the Set  
Time item, and press Enter. The instrument display will change to  
resemble Figure 5.  
Figure 5: The Set Time display  
2. The underline cursor indicates the active character position. Move  
the cursor with the A and " keys. Enter the appropriate character  
from the SDA 601 keypad. When the cursor is in positions that  
require numeric entry, the keys will be automatically shifted.  
When you enter an appropriate character for the field, the cursor  
will move one position to the right. The acceptable month abbrevi-  
ations are the first three characters of the English name: JAN;  
FEB; MAR; APR; MAY; JUN; JUL; AUG; SEP; OCT; NOV;  
DEC.  
SDA 601 Serial Digital Analyzer User Manual  
9
Getting Started  
Enter the time in 24 hour format; that is, if the present time is  
4:15 pm, enter 16:15.  
3. When the correct date and time is shown on the display, press En-  
ter. If all values are valid, the instrument will respond with the  
message “Time Accepted.” If you have made an error and entered  
an invalid date or time, the instrument will respond with an ap-  
propriate error message. If that happens, correct the error and press  
enter.  
4. Press any rectangular key to exit the Utility menu, or proceed to  
other preliminary settings, as appropriate.  
Set the Battery Type  
1. After setting the clock, press the B key once to scroll to the Diag-  
nostics submenu item, and press Enter.  
2. In the Diagnostics submenu, scroll down to the Power Manage  
item with the B key. Again, press Enter.  
3. The top item in the Power Manage submenu is Battery Type.  
Toggle to the selection that matches the type of battery you have  
installed in your SDA 601 by pressing either A or ". The choices  
are “rechargeable” and “disposable.” Select rechargeable when  
using NiCad AA cells or the optional battery pack; choose dispos-  
able when you are using common Alkaline AA batteries, which  
cannot be recharged. Press Enter to confirm the choice.  
4. When the correct battery type is indicated by an asterisk (*) on the  
lower right of the LCD, continue to Auto Power Off, or press any  
rectangular key to exit the Utility/Diagnostics/Power Manage sub-  
menu and return to normal operation.  
Enable (Disable) Auto Power Off  
“Auto Power Off” will switch the instrument off when ten minutes  
have passed without a key press. Enable this feature when you are  
using battery power and operating in an environment in which un-  
planned shutdown of the SDA 601 is permissible.  
1. While still in the Utility/Diagnostics/Power Manage submenu,  
press the B key twice to scroll to the Auto Power Off item.  
SDA 601 Serial Digital Analyzer User Manual  
10  
Getting Started  
2. Disable/enable Auto Power Off by pressing either A or ". Press  
Enter to confirm the choice. Enabled Auto Power Down is indi-  
cated by a “rotating line” symbol on the second line of the instru-  
ment display, and in the lower-left corner of the OSD.  
3. Use the Y and B keys to scroll to other “power manage” items, or  
press any rectangular key to exit the menu and resume normal op-  
eration.  
Disable (Enable) Timed LCD Backlight Turn Off  
Another power saving feature of the SDA 601 is timed turn-off of the  
LCD backlight. It is enabled by default in a new or reset instrument. If  
you will always operate with the AC adapter, you may wish to disable  
the feature. To toggle backlight turn-off:  
1. In the Utility/Diagnostics/Power Manage submenu, use the Y and  
B keys to scroll to the LCD Backlight item.  
2. Choose between “Timed Turn Off” and “On all the time” with ei-  
ther A or ", then press Enter to confirm the choice.  
3. As before, use the Y and B keys to scroll to other “power manage”  
items, or press any rectangular key to exit the menu and resume  
normal operation.  
Performance Verification  
A performance verification procedure, which some users may require  
for acceptance testing, is included in the optional SDA 601 service  
manual (Tek p/n 070-8914-0x). To order a service manual, please con-  
tact your nearest Tektronix representative or field office.  
SDA 601 Serial Digital Analyzer User Manual  
11  
Getting Started  
SDA 601 Serial Digital Analyzer User Manual  
12  
Operating Basics  
NOTE. For more information on Serial Digital Video Systems request  
Tektronix publication 25W-7203-1 “A Guide to Digital Television  
System and Measurements” from your nearest Tektronix representa-  
tiveor field office.  
To begin using the instrument as quickly as possible, see “Using  
Your SDA 601,” below. For additional information on selected top-  
ics, turn to the Reference section of this manual, beginning on page  
27.  
Using Your SDA 601  
Here’s what you can do with your SDA 601. Instructions for each  
function begin on the indicated page.  
SDA 601 Serial Digital Analyzer User Manual  
13  
Operating Basics  
H Analyze one second of the incoming signal and read the results  
on the instrument display or an attached video monitor  
(page 14). You may also print the results on an attached ASCII,  
serial printer (page 15).  
H Watch the input signal, paying attention to selected signal char-  
acteristics, or groups of characteristics (page 16). Errors are re-  
ported to the instrument display panel and an attached video  
monitor. You may also log errors to an attached printer (page  
20).  
H Set audible alarms to warn you of any errors encountered while  
the instrument is “watching” the input signal (page 19).  
H View decoded video on an attached monitor (attached to the  
AUX output, see page 4)  
H Highlighting (page 23)  
H Signal Level Meter (page 21)  
H Cursors (page 22)  
H Pulse Cross (page 24)  
Analyzing a Signal  
Analyze Mode may be selected with the Analyze key at any time. In  
this mode, the instrument attempts to lock onto the digital video sig-  
nal and, if successful, analyzes the status of the various signal char-  
acteristics at one instant in time and reports the status to the Review  
List. The Review List may be viewed on the OSD (on an attached  
video monitor) as well as on the SDA 601 LCD when no menu is  
active. The up and down arrow keys scroll through the list of de-  
tected “conditions.”  
The conditions detected and reported in an SDA 601 analysis are:  
Video format  
TRS (OK/incorrect)  
Line standard (625 or 525)  
Video present or missing  
Video resolution (8 or 10 bits)  
EDH packet found/missing  
Audio status (16 channels)  
Stuck bits (if any)  
ANC Format (OK/incorrect)  
Zero length ANC (yes/no)  
APCRC changes (yes/no)  
FFCRC changes (yes/no)  
APCRC errors (yes/no)  
FFCRC errors (yes/no)  
ØAPCRC (yes/no)  
Illegal (digital word) values  
SDA 601 Serial Digital Analyzer User Manual  
14  
Operating Basics  
Video In/Out of range  
EDH flag set/not set  
Line/field length (OK/incorrect)  
Performing an Analysis — To analyze a signal, simply press Ana-  
lyze. The SDA 601 will observe the incoming signal for one second,  
analyze the data, and write the results to a “condition review list”  
and the OSD.  
Reviewing the results on the OSD — There are three pages of re-  
sults; use the B and Y keys, as indicated by the arrow icons on the  
lower right of the OSD, to see all three pages.  
Figure 6: The Analyze OSD  
Reviewing the results on the LCD — Use the B and Y keys to  
scroll through the condition list on the instrument LCD. The display  
will “time out” after three seconds of no key press and return to its  
pre-analysis state—Idle, or the data enabled through the Display Se-  
lect menu. Press Enter to return to the last condition; press B or Y to  
scroll down or up the list.  
Printing an Analysis report — With a printer connected to the  
RS-232 port and properly configured (see pages 35 and 36), press  
Shift, then Analyze. A report, resembling the printout shown in Figure  
3 (page 6), will be printed.  
SDA 601 Serial Digital Analyzer User Manual  
15  
Operating Basics  
Audio and Stuck Bits explained — Audio content and stuck bits are  
reported on the LCD and Printer output in the same format as in the  
OSD, shown in Figure 6:  
The “Audio:” result line has room to display the status of all 16  
audio channels that can be embedded in digital video. The status  
of channels (#1 through #16, from left to right) are reported as  
“–” for no audio detected, “A” for active audio, and “M” for  
mute (present, but silent).  
The “Stuck Bits:” line shows the status of the 10 possible video  
word bits, MSB to LSB left to right. If the signal contains any  
stuck bits, they are indicated by an H (stuck high) or L (stuck  
low) in the appropriate position. The two LSBs will be reported  
as L when an 8-bit video signal is received. Other stuck bits sug-  
gest either an incorrect signal or faulty equipment.  
Zero-length ANC — is reported by the SDA 601 when an ancillary  
data “Data Count word” with value Ø is detected. Analyze mode  
detects the presence of zero-length ANC because it can be inserted in  
the serial digital video data stream by some equipment, yet it can  
cause difficulty in many systems.  
Watching a Signal  
While Analyze takes a one-second “snapshot” of the input signal and  
reports the status of a predefined list of characteristics, Watch mode  
permits continuous observation of the characteristics—or “condi-  
tions”—of your choice. Besides reporting errors to the instrument  
display and the OSD, Watch mode can also sound an audible (“beep”  
or “tick”) alarm to alert you of any error, and log errors to a printer  
for later review.  
The steps to monitoring a signal with the SDA 601 are:  
1. Select the conditions to be watched. This is done through the  
Watch menu, which can be set for “Group” or “Item” selection of  
conditions. Group selection may be more convenient, but not as  
flexible as Item selection.  
In all, there are 20 Watch conditions. Eight conditions are always  
watched and reported when “Watch Menu Type” is set—through  
the Utility menu—to “Groups”:  
SDA 601 Serial Digital Analyzer User Manual  
16  
Operating Basics  
Video format  
EDH packet found/missing  
Audio present/missing  
Stuck bits (if any)  
Line standard (625 or 525)  
Video present or missing  
Bits in active picture (8 or 10)  
Other ANC (if any)  
The twelve remaining conditions are organized into the four  
Watch groups:  
Data Value Group:  
Illegal (word) values  
Video In/Out of range  
Format Group:  
CRC Change Group:  
APCRC changes (yes/no)  
FFCRC changes (yes/no)  
APCRC is/not Ø  
Line/field length (OK/incorrect)  
ANC Format (OK/incorrect)  
TRS (OK/incorrect)  
EDH Group:  
AP EDH errors (yes/no)  
FF EDH errors (yes/no)  
EDH flag set/not set  
Zero length ANC (yes/no)  
When only the Data Value group is set to “Watch,” the SDA 601  
will actually observe the status of ten conditions—the eight de-  
fault conditions plus Illegal Values and Video In/Out of Range. If  
all four groups are selected, all 20 conditions are monitored.  
Group selection can be inconvenient, however, when you are  
only interested in one condition in the group. An example might  
be when observing a changing test signal that is being generated  
with ØAPCRC. In this case, FFCRC changes are not an error, but  
non-zero APCRC is, and Watching the CRC Change Group can  
result in inappropriate alarms.  
The remedy, then, is to use the Utility menu and set Watch Menu  
Type to Item Select. When this is done, the only always-watched  
condition is Video Format (270 Mb Component, for example).  
All other items are selected individually. See the Watch menu  
listings on pages 29 through 30.  
2. Set the appropriate alarms; see page 19.  
3. Once all conditions have been selected and alarms configured,  
begin the Watch session by pressing Watch. If none of the display  
options (Signal Level, Cursor Data, or Current Time) have been  
turned on through the Display Select menu, the display will re-  
semble Figure 7. The “W” icon will appear whenever the instru-  
ment is in Watch mode; the “A” icon will be displayed when  
alarms have been toggled On with the Alarm On/Off key (whether  
SDA 601 Serial Digital Analyzer User Manual  
17  
Operating Basics  
or not alarms are enabled through the Alarm menu); and the “E”  
icon will appear when an error is detected.  
Figure 7: The SDA 601 “Watching” Display  
4. Review the condition list on the SDA 601 LCD by pressing the B  
key until you reach the END OF LIST message. Use Y to scroll  
back up the list as desired. The Watch review list will “time out”  
if more than 3.5 seconds pass without a key press. Press Enter to  
return to the last-displayed item; press Y to move up the list and  
display the previous item; press B to display the next item  
“down” the list.  
5. If you have a video monitor connected to the AUX output, you  
may review the condition list on the OSD. Toggle the OSD On  
with the Insert On/Off key, then page the OSD up and down with  
the Y / B keys.  
Restarting a Watch session — Pressing Watch during a Watch ses-  
sion will restart the Watch mode, resetting the elapsed time counter  
and the printer page count to zero.  
Stopping a Watch session — The current Watch session will end  
when you press Analyze or enter the Watch menu. After the analysis,  
or on leaving the Watch menu, you may begin a new Watch session  
by pressing Watch.  
Pausing a Watch session — A Watch session is temporarily sus-  
pended when you invoke any other SDA 601 menu (besides the  
Watch menu). Data collection continues, but OSD and printer up-  
dates are suspended. When you exit the menu by pressing a rectan-  
gular key, the OSD will update to include all events during the time  
spent in the menu.  
SDA 601 Serial Digital Analyzer User Manual  
18  
Operating Basics  
Figure 8: Watch Errors Reported on the OSD  
Interpreting error reports — The SDA 601 reports errors in many  
Watch conditions to the review list on an “error second” basis, as  
shown in Figure 8. In this illustration, the FFCRC and the APCRC  
changed at least once, giving one error second approximately 25 se-  
conds after the Watch session began. In addition, APCRC was NOT  
zero at least once in over 254 seconds (254 is the highest count pos-  
sible), and the last error was detected in the last reported second,  
7:12 into the Watch session.  
A similar format is used on the SDA 601 liquid crystal display.  
Alarms  
Alarms are enabled through the Alarm menu. When enabled, an  
alarm is generated when one or more signal conditions or errors are  
detected by the SDA 601 in Watch mode. The SDA 601 has two  
alarm modes.  
H A “beeper” (audible) alarm that may be configured in one of  
three ways:  
h Long Beep — Several seconds long, produced each time an  
alarm condition is detected. In the case of frequently-recur-  
ring errors, the beep will repeat continuously, if necessary;  
SDA 601 Serial Digital Analyzer User Manual  
19  
Operating Basics  
however, there may be fewer than one alarm per error condi-  
tion.  
h Short Beep — One second duration; otherwise similar to the  
Long Beep.  
h Beep “Tick” — A very short beep, almost a tick; useful when  
there are many alarm conditions, when they occur in “bursts,”  
or for audible feedback when performing equipment adjust-  
ments for proper operation.  
H A Printer Port alarm, output on the RS-232 port. There are two  
ways to use the printer during watch sessions:  
h Log each error — or as many as the printer buffer allows.  
Intended for extended monitoring of the signal when few, if  
any errors are expected. You can leave the SDA 601 (powered  
by the AC adapter) and a printer unattended to log and help  
diagnose intermittent problems. This is the same as the audi-  
ble alarm in that, once configured, it can be controlled with  
the Alarm On/Off key.  
h Print an error report every ten seconds — Strictly speaking,  
this option is not an alarm because when it is selected, the  
instrument will print a report every ten seconds of the Watch  
session whether an error has been detected or not, and re-  
gardless of the Alarm On/Off state (set with the key or  
through the menu). The print line will contain at least the  
time and video format; only errors that occurred in the pre-  
ceding ten-second interval will be printed.  
Select alarm conditions or errors through the Watch menu (see  
“Watch Mode,” above). Conditions that will always trigger an alarm  
if detected by the SDA 601 in Watch mode are:  
No PLL Lock  
Video Missing  
“Other” ANC Data  
Illegal Value  
Video Ovr Range  
Line/Field Len  
EAV/SAV/TRS Error  
ANC Format Error  
Zero Length ANC  
AP CRC change  
SDA 601 Serial Digital Analyzer User Manual  
20  
Operating Basics  
FF CRC change  
AP EDH error  
FF EDH error  
Flag Set  
Conditions that will trigger an alarm only if they are configured to  
do so through the Item Watch menu are:  
Line Std Detect (if “Alarm if 525” or “Alarm if 625” is selected)  
AP Bits (8/10) (if “Alrm if 8 bits” or “Alrm if 10 bits” is se-  
lected)  
EDH packet miss (if “Alarm if Miss” is selected)  
AP CRC Not Ø (if “Alarm Not Ø” is selected)  
Configure the beeper and printer alarms through the Alarm Menu  
(see page 30). As you might expect:  
1. Enter the Alarm menu (press Shift, then Alarm On/Off).  
2. Scroll to the desired menu item with the B / Y keys.  
3. Select the option with the A / " keys.  
4. Confirm the option choice by pressing Enter.  
5. Exit the Alarm menu by pressing any rectangular key.  
Toggle the alarms On/Off with the Alarm On/Off key.  
Displaying the Signal Level  
The relative level of the serial digital input signal is displayed by  
default on every new (or reset) SDA 601. This display can be helpful  
in identifying points in your system where the signal may be margin-  
al because of long cable runs or faulty equipment.  
Figure 9: The SDA 601 Signal Level Display  
SDA 601 Serial Digital Analyzer User Manual  
21  
Operating Basics  
The signal level display may be toggled On/Off through the Display  
Select key/menu (see page 31).  
Cursor  
The SDA 601 “cursor” may be used to pinpoint a single word in the  
digital video frame and discover the actual value of the selected  
word and the three that follow. The location of the cursor may also  
be shown with “cross hairs” on a video monitor connected to the  
AUX output.  
The cursor is positioned (and a word is selected) with the arrow keys.  
Figure 10: The Cursor Data Display  
The address/coordinates of the word, and its actual hexadecimal val-  
ue, may be viewed on the SDA 601 display, as shown in Figure 10.  
Toggle display of the Cursor Data on the instrument LCD through  
the Display Select key and menu (see page 31).  
The first line of the cursor data display contains the hexadecimal  
values of the selected word and the three that follow it. Values typi-  
cal for the SAV timing and reference signal are shown in Figure 10.  
The video “type” of the selected word is indicated by the sample ID:  
B = C color difference  
B
Y = Cosited luminance  
R = C color difference  
R
y (lowercase) = Isolated luminance  
SDA 601 Serial Digital Analyzer User Manual  
22  
Operating Basics  
The second line contains the address or coordinates of the selected  
word. In the example, the selected word is number 1712 of line 4 in  
field 1.  
The cursor movement icon is present on the second line when you  
can use the arrow keys to position the cursor. Use the B (Cursor) key  
to toggle the arrow keys between cursor movement and their alter-  
nate display scrolling function. Normal cursor movement is one line  
for each press of the Y or B key, and one word per press of the A or  
" key. Pressing Shift twice (to invoke shift lock) will increase hori-  
zontal movement to 20 words per key press, and vertical movement  
to 10 lines per key press. Press Shift again to return to “fine” cursor  
control.  
Toggle display of the Cursor cross hairs in the AUX output through  
the I/O menu (see page 31).  
Highlighting  
Highlighting is a feature of the AUX video output in which the  
SDA 601 “flashes” pixels that correspond to certain Watch condi-  
tions. With highlighting, you can visually monitor the occurrence,  
placement, and prevalence of these signal conditions in the context  
of the video signal.  
The following Watch conditions or errors can be highlighted on an  
attached video monitor:  
h ANC packet format error (e.g., checksum or parity errors)  
h Zero-length ANC packets  
h Other ANC data (data that is neither audio nor EDH format)  
h Incorrect Line/field length  
h Incorrect TRS/EAV/SAV format  
h Illegal data values  
h Out of range video levels  
To use Highlighting:  
1. Configure the SDA 601 to monitor one or more of the above  
items; see “Watching a Signal” beginning on page 16.  
2. Enter the I/O menu (press Shift, then Insert On/Off).  
SDA 601 Serial Digital Analyzer User Manual  
23  
Operating Basics  
3. The first I/O menu item is Highlighting. Use the A or " key to  
select “Display,” then press Enter to confirm the choice.  
4. While still in the I/O menu, press the B key once to scroll down  
to the “Dim Video” item.  
5. Toggle Dim Video to On with a horizontal arrow key, then press  
Enter to confirm the choice. Dim Video reduces the video signal  
by 50%, ensuring good contrast between the video signal and  
highlighted pixels.  
6. Exit the I/O menu by pressing any rectangular key.  
7. If necessary, start or restart the Watch session by pressing Watch.  
8. The default OSD will obscure any highlighting in the portion of  
the picture that it occupies. Therefore, if the OSD is on, toggle it  
off with the Insert On/Off key.  
A convenient way to see the effects of Highlighting is to set either  
the Data Value Group or the Video Over Range item to Watch, then  
input a Pluge signal. The “sub-black” portion of active video will be  
highlighted.  
Note that the ANC highlight conditions occur in the horizontal or  
vertical interval. Use Pulse Cross to “see” those conditions.  
Pulse Cross  
Pulse Cross is an SDA 601 AUX output mode that allows the user to  
“see” the horizontal and/or vertical intervals, which are normally  
blanked in serial video monitors. The original four-word timing ref-  
erence signals (TRS, which contain EAV and SAV) are replaced with  
legal video samples, and analog H and V sync information is inserted  
in the original active picture region. To invoke pulse cross:  
1. Enter the I/O menu (press Shift, then Insert On/Off).  
2. Press the B key repeatedly to scroll down to the Pulse Cross  
menu item.  
3. With the A / " keys, scroll to the desired pulse cross option. The  
options are:  
Normal — the default  
HCross — reveals the “horizontal interval” region of the signal  
VCross — reveals the “vertical interval” region of the signal  
Both — combines HCross and VCross  
SDA 601 Serial Digital Analyzer User Manual  
24  
Operating Basics  
4. Press Enter to select the new option.  
5. Press any rectangular key to exit the I/O menu.  
Presets  
The configuration of the SDA 601 at any given time may be saved as  
a Preset for later recall. Three different configurations can be saved.  
Using presets, you can easily change between completely different  
combinations of (for instance) Watch conditions, alarm settings,  
LCD display options, and AUX output options. To save a Preset:  
1. Enter the Presets menu (press Shift, then Display Select).  
2. Press B once to reach the Save Preset item.  
3. Choose a preset storage location (1, 2, or 3) with the A / " keys.  
Remember that previous contents of the storage location will be  
overwritten in the next step.  
4. Press Enter to save the current settings in the indicated location.  
“Working... Done” will appear on the LCD during the save pro-  
cess.  
5. Press any rectangular key to exit the Presets menu.  
To recall a previously saved Preset:  
1. Enter the Presets menu.  
2. Choose the Preset (1, 2, or 3) with the A / " keys.  
3. Press Enter to recall the saved configuration. “Working... Done”  
will appear on the LCD. Some settings (I/O and Display settings,  
for example) will change instantly; Watch and Alarm settings  
will be restored in the next Watch session.  
4. Press any rectangular key to exit the Presets menu.  
NOTE. Recalling a preset will turn Watch mode off.  
Software Reset  
To reset the instrument NVRAM and restore the SDA 601 to “facto-  
ry” default settings, select the Factory Reset item in the Utility/Diag-  
nostics/NVRAM/TIC Dgs submenu. See page 34.  
NOTE. All user settings and presets will be lost.  
SDA 601 Serial Digital Analyzer User Manual  
25  
SDA 601 Serial Digital Analyzer User Manual  
26  
Reference  
SDA 601 Menus  
The instrument menus are explained here, and listed on the following  
pages.  
Watch Menu (groups enabled) . . . . . . . . . . . . . . . . . . . . 29  
Watch Menu (items enabled) . . . . . . . . . . . . . . . . . . . . . 29  
Alarm Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
I/O Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Display Select Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Presets Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Utility Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31  
Menu Conventions  
Once you have entered a menu, use the arrow keys and Enter, as  
shown Figure 11, to scroll the menu and select and confirm choices.  
Figure 11: SDA 601 Menu Conventions  
The current status is indicated by the asterisk at the end of the se-  
cond line. In the display illustrated in Figure 12, for example, the  
asterisk tells you that 15 is the current horizontal position of the OSD  
(this item is in the Utility/OSD Setups submenu; see page 32). The  
asterisk will disappear if you press the " key once to change the val-  
ue to 16. It will reappear if you then press Enter to confirm 16 as the  
new position.  
SDA 601 Serial Digital Analyzer User Manual  
27  
Reference  
Figure 12: The OSD Setups/Horizontal Position Item  
Number Entry: In many cases, numbers may be entered directly  
from the keypad. In the “Horiz Position” item, for example, you can  
enter the desired location with the number keys 0 through 9—see the  
following illustration—without first pressing Shift.  
Figure 13: The SDA Number Keys  
Note that once the new horizontal coordinate has been entered  
through the keypad and is visible on the LCD, you must press Enter  
twice to confirm the change. The first press completes the numeric  
entry; the second makes the entry permanent. If you leave the menu  
or submenu without confirming the entry with a second press of the  
Enter key, the setting will revert to its previous value. Just remember  
to press Enter repeatedly until the asterisk appears.  
NOTE. In the menu listings that follow, the factory default for each  
item is the first listed option. Defaults for items that can be set within  
a range of numeric values are given within square brackets [for  
example] on the option line.  
SDA 601 Serial Digital Analyzer User Manual  
28  
Reference  
Watch Menu (groups enabled)  
Enter the Watch menu by pressing Shift, then Watch. Configure the  
menu for Group or Item selection through the Utility menu; see  
page 33. See page 17 for a list of the items in each group.  
(1)  
(2)  
(3)  
(4)  
Data Value Grp  
Off <> Watch  
Format Group  
Off <> Watch  
CRC Chnge Group  
Off <> Watch  
EDH Group  
Off <> Watch  
Watch Menu (items enabled)  
(1)  
(2)  
(3)  
(4)  
(5)  
(6)  
(7)  
(8)  
(9)  
Line Std Detect  
Off <> Watch <> Alarm if 625 <> Alarm if 525  
1
Video Missing  
Off <> Watch  
AP Bits (8/10)  
Off <> Watch <> Alrm if 8 bits <> Alrm if 10 bits  
2
3
EDH packet miss  
Off <> Watch  
Embedded Audio  
Off <> Watch  
Stuck Bit Detec  
Off <> Watch  
4
Other ANC Data  
Off <> Watch  
Illegal Value  
Off <> Watch  
Video Ovr Range  
Off <> Watch  
(10) Line/Field Len  
Off <> Watch  
1
2
3
4
Status is reported but not treated as an error.  
Word length is reported.  
Missing  
Ancillary data packet, which is neither Audio nor EDH, is detected.  
SDA 601 Serial Digital Analyzer User Manual  
29  
Reference  
(11) EAV/SAV/TRS err  
Off <> Watch  
(12) ANC Format Erro  
Off <> Watch  
(13) Zero Length ANC  
Off <> Watch  
(14) AP CRC change  
Off <> Watch  
(15) FF CRC change  
Off <> Watch  
(16) AP CRC Not ∅  
5
Off <> Watch <> Alarm Not ∅  
(17) AP EDH error  
Off <> Watch  
(18) FF EDH error  
Off <> Watch  
(19) Flag Set  
Off <> Watch  
6
(20) Clear All Items  
Press Enter  
Alarm Menu  
Enter the Alarm menu by pressing Shift, then Alarm On/Off.  
(1)  
(2)  
(3)  
Beeper  
Beep: Off <> Long <> Short <> Tick  
Print Errors  
Off <> Log each Error <> Log every 10s  
7
8
9
Alarm On/Off  
Off <> On  
5
Non–zero APCRC is reported as an error and will trigger an alarm, if set.  
Sets all items to Off.  
6
7
8
9
Only when alarms are toggled On.  
Independent of alarm settings.  
Duplicates the action of the Alarm On/Off key.  
SDA 601 Serial Digital Analyzer User Manual  
30  
Reference  
I/O Menu  
Enter the I/O menu by pressing Shift, then Insert On/Off.  
(1)  
(2)  
(3)  
(4)  
(5)  
Highlighting  
No Display <> Display  
Dim Video  
Off <> On  
Video Cursor  
No Display <> Display  
Pulse Cross  
Normal <> HCross <> VCross <> Both  
AUX  
Pixmon Y <> Pixmon R–Y <> Pixmon B–Y  
Display Select Menu  
Enter the Display Select menu by pressing Display Select.  
(1)  
(2)  
(3)  
Disp Sig Level  
On <> Off  
Disp Cursr Data  
Off <> On  
10  
Disp Cur Time  
Off <> On  
Presets Menu  
Enter the Presets menu by pressing Shift, then Display Select.  
(1)  
Recall Preset  
Preset 1 <> Preset 2 <> Preset 3  
(2)  
Save Preset  
Preset 1 <> Preset 2 <> Preset 3  
Utility Menu  
Enter the Utility menu when the instrument is Watching or Idle (as  
indicated on the LCD) by holding Lock Out down while pressing ON.  
Note that some items in the Diagnostics submenu—are for use by  
qualified service personnel only (these items are marked with a )  
10  
Current time and date, set through the Utility menu.  
SDA 601 Serial Digital Analyzer User Manual  
31  
Reference  
symbol); see the SDA 601 Service manual (Tektronix p/n  
070-8914-0x) for instructions on their use.  
(1)  
OSD Setups...  
Press Enter  
11  
(a)  
(b)  
(c)  
(d)  
(e)  
(f)  
OSD On/Off  
On <> Off  
Horiz Position  
0 <> MAX=31 [default = 5]  
Vert Position  
MIN = 0 <> MAX = 31 [default = 11]  
Set char Size  
Medium <> Big <> Small  
Previous Menu  
Press Enter  
Set char colors  
White on Black <> Black on White <> White w/outline  
<> Black w/outline  
(2)  
Printer Setup..  
Press Enter  
12  
(a)  
(b)  
(c)  
(d)  
(e)  
Page Limit  
Min = 0 <> Max = 250 [default = 10]  
Top of Form  
Form Feed <> End of Lines <> 3 End of Lines  
Line per Page  
Min = 0 <> Max = 250 [default = 60]  
End of Line  
Line Feed (LF) <> CarriageRet(CR) <> CR and LF  
Previous Menu  
Press Enter  
13  
14  
(3)  
RS232 Setup...  
Press Enter  
(a)  
Set Baud Rate  
9600 <> 4800 <> 2400 <> 1200 <> 300  
(b)  
Set Parity  
None <> Odd <> Even <> Mark <> Space  
11  
Supersedes Insert On/Off key.  
12  
Pages containing the number of lines set in (c). Min/0 setting is equivalent to “no limit.” The  
page count is reset when Watch is started or restarted.  
13  
As selected in item (d).  
14  
Three end of lines as selected in item (d), may be used as an alternative to Form Feed in order  
to save paper.  
SDA 601 Serial Digital Analyzer User Manual  
32  
Reference  
(c)  
Previous Menu  
Press Enter  
(4)  
(5)  
(6)  
(7)  
Watch Menu Type  
Group Select <> Item Select  
LCD Contrst Adj  
MIN = 020 <> MAX = 80 [default = 80]  
Set Time  
Press Enter  
Diagnostics...  
Press Enter  
(a)  
Show SW/FW Vers  
Press Enter  
(b)  
Power Manage ..  
Press Enter  
1) Battery Type  
Rechargeable <> Alkaline  
2) LCD Backlight  
Timed Turn Off <> On all the time  
3) Auto Power Off  
Disabled <> Enabled  
4) Previous Menu  
Press Enter  
(c)  
Device Tests..  
Press Enter  
1) Test Beeper  
Press Enter  
2) LCD Pattern  
Press Enter  
3) Clear OSD  
Press Enter  
4) Fill OSD Screen  
Press Enter  
5) Keypad Test  
Press Enter  
6) RS232 loop thru  
Press Enter  
7) Previous Menu  
Press Enter  
(d)  
NVRAM/TIC Dgs..  
Press Enter  
1) Get TIC Serial  
Press Enter  
2) Get TIC Time  
Press Enter  
SDA 601 Serial Digital Analyzer User Manual  
33  
Reference  
3) Read TIC Memory  
<> 0 *  
15  
4) Factory Reset  
Press Enter  
5) Previous Menu  
Press Enter  
(e)  
Flash Diags.. ✝  
Press Enter  
1) Checksum Memory  
Press Enter  
2) Read Byte 10000  
Press Enter  
3) Writ Byte 10000  
MIN = 0 <> MAX = 255  
4) Erase Sec 10000  
Press Enter  
5) Read SLM Cals  
Press Enter  
6) Write Byte Loop  
MIN = 0 <> MAX = 255  
7) Previous Menu  
Press Enter  
(f)  
Calibration.. ✝  
Press Enter  
1) Calibrate SLM  
Press Enter  
2) Adj Serial Pot  
16  
MIN = 0 <> MAX = 511  
3) Previous Menu  
Press Enter  
FW Upgrade  
(g)  
Press Enter  
1) Show Cur Bank  
Press Enter  
2) Download  
Press Enter  
3) Copy B1 to B∅  
Press Enter  
4) Previous Menu  
Press Enter  
(h)  
Write Test Reg ✝  
tr: 0 <> 255  
15  
Will reset the instrument to factory defaults.  
16  
Value is adjusted during manufacture. To be changed only by qualified service personnel; see  
the Service manual, Tektronix p/n 070-8914-0x.  
SDA 601 Serial Digital Analyzer User Manual  
34  
Reference  
(i)  
Previous Menu  
Press Enter  
The AUX Output  
The analog signal present at the SDA 601 AUX output is derived  
from the Serial Video input. It is a single channel, 5-bit decoded and  
unfiltered, suitable for identifying the input and displaying the cursor  
cross hairs, Highlighting, and OSD.  
The AUX choices in the I/O menu are: Pixmon Y; Pixmon R–Y; and  
Pixmon B–Y. As you might guess, this determines which of the three  
video components is shown on the video monitor. The behavior and  
appearance of the cross hairs, Highlighting, and OSD are not af-  
fected by this choice.  
RS-232 Connector  
The RS-232 connector is 9-pin subminiature D-type connector that  
provides a serial interface for printer output and eventual in-field  
software upgrades. It has a driver built in for RS-232 serial binary  
data interchange. The operational mode is full duplex; data type is  
asynchronous. Baud rate and parity are selected throuth the Utility/  
RS232 Setup submenu; see page 32. The pin assignments are listed  
in Table 1.  
Table 1: RS-232 Connector Pin Assignments  
Pin  
Data Connection  
1
2
3
4
5
6
7
8
9
Not connected  
RXD (Received Data) from SDA 601  
TXD (Transmitted Data) to SDA 601  
Not connected  
5
1
Signal Ground  
9
6
Not connected  
RS-232  
RTS (Request to Send) to SDA 601  
CTS (Clear to Send) from SDA 601  
Not connected  
SDA 601 Serial Digital Analyzer User Manual  
35  
Reference  
The connector pinout has been chosen to interface directly with an  
IBM PC/AT 9-pin serial port using a straight-through cable. A simple  
ribbon cable may be adequate.  
For logging errors and printing reports, a “null-modem” cable may  
be required, depending on the pinout of the printer connector. Con-  
sult your printer manual to determine compatibility.  
Because of space limitations on the connector end of the SDA 601,  
you may have to insert a 9-pin adapter between the cable and the  
connector. If the cable has a female end, use a male/male adapter  
such as ITT Cannon p/n 111805–1.  
RS-232/Printer Setups  
Set the printer to software flow control (XON/XOFF), if possible.  
Specify 60 lines per page (in the Utility/Printer Setup submenu) for  
most printers using 8.5 x 11.0 inch paper.  
Set the Baud rate and Parity—through the Utility/RS-232 Setup sub-  
menu—to match the printer. When in doubt, set Parity to None.  
Using the Watch Mode  
Here are some notes and hints regarding the use of the SDA 601  
Watch mode to verify the integrity of Serial Digital Video signals.  
Format Error Checking  
Format error checking is normally useful for verifying that equip-  
ment has been designed to conform the various signal format and  
interface standards. Format errors should not be routinely present. If  
a signal is being altered by transmission errors, then there is a proba-  
bility that resulting bit errors will cause some format errors which  
are detectable by the SDA 601.  
The SDA 601 monitors some specific format error conditions, and if  
format errors occur in at least three video lines in a single field, this  
is evidence of signal transport errors.  
The format errors that may be used to indicate the likelihood of  
transport errors are:  
SDA 601 Serial Digital Analyzer User Manual  
36  
Reference  
H EAV/SAV mis-format — derived by decoding the EAV/SAV  
protection bits for errors.  
H EAV/SAV incorrect placement — which may be the result of a  
receiver momentarily losing clock sync to the received signal,  
and thereby adding or dropping a data bit. This may also result  
from a bit error altering an EAV or SAV so that its presence is  
unrecognizable.  
H Illegal data — whereby the reserved values of 000-003  
(00.0-00.3) or 3FC-3FF (FF.0-FF.3) are improperly present.  
H ANC format error — derived from checking the checksum and  
parity information in ancillary data packets.  
Practically speaking, a video signal that fails the last check is most  
certainly seriously impaired. This check is provided because it works  
with in-service equipment operating without the benefit of any  
source signal encoding whatsoever. In the absence of either fixed  
signal patterns or signal encoding, this is a criterion for judging  
transport layer signal corruption which can be automated and applied  
to video signals (and video content) which can be expected in com-  
mon use.  
Video Missing/Interrupted — If EAVs and SAVs are missing or  
corrupted beyond recognition, for a period of approximately seven  
video lines, the SDA 601 will assume that video is utterly corrupted  
or entirely missing. When this occurs, the instrument artificially  
maintains a horizontal and vertical reference which ignores the input  
signal. When this condition occurs, and all attempts to reestablish  
synchronization to the input signal fail, this failure is reported as  
“Video Missing.”  
In order to reestablish horizontal and vertical synchronization to the  
input signal, the SDA 601 must be able to recognize the presence of  
EAVs in the incoming signal for 64 consecutive video lines. When  
this is achieved, then horizontal synchronization is immediately rees-  
tablished. Vertical synchronization is achieved at the beginning of  
the next vertical interval.  
If the synchronization is lost and restored, this condition is reported  
as “Video Interrupted.”  
Either of the “Video Missing” and “Video Interrupted” conditions  
indicate gross equipment or transmission failure, and should never  
occur in normally configured equipment.  
SDA 601 Serial Digital Analyzer User Manual  
37  
Reference  
Using the CRC Change Watch Group  
The three items in the CRC change Watch group—ØAPCRC,  
FFCRC Changed, and APCRC Changed—are designed to facilitate  
the testing of equipment or signals that don’t have EDH encoding.  
ØAPCRC — If you are testing equipment that won’t pass the verti-  
cal interval, but will pass the entire active picture area, then  
ØAPCRC is an excellent test method. Vision mixers (production  
switchers) and some VTRs or still stores are typical examples of  
equipment that can benefit from this test method.  
ØAPCRC is an encoding process in which the last five video words  
in the last full line of active video are altered so that the CRC of the  
active picture words for the entire field will be exactly zero (Ø).  
The SDA 601 calculates the same Active Picture CRC (APCRC) that  
is used for EDH error checking. The SDA 601 can recognize that this  
CRC is consistently Ø for each field, and will then assume that any  
occurrence of a non-zero CRC is the result of a signal propagation  
error. This check is as reliable as the APCRC check in the EDH  
checking method.  
Because ØAPCRC encoding does modify the active video signal, the  
method may not be acceptable in all operational cases. As a practical  
consideration. however, the encoding results in a small bright spot in  
the very bottom right corner of the active picture, where it is not nor-  
mally visible on overscanning monitors or receivers. Furthermore,  
the encoding is designed to not introduce any illegal data values that  
might provoke video signal processing errors in conventional opera-  
tional video equipment.  
Another advantage of this method is that it doesn’t require a fixed  
test signal and may be applied to any legal digital component or  
composite format signal.  
This method of signal checking will not work if the equipment being  
tested does not pass the entire active video line, or if a 10-bit signal  
encoded with ØAPCRC is passed through an 8-bit transmission link.  
Eight-bit signals which are encoded may be used to check either  
8-bit equipment or the eight higher-order bits of 10-bit equipment,  
and 10-bit signals which are encoded may be used to check 10-bit  
equipment.  
FFCRC Changed — Is an out-of-service check for either 8-bit or  
10-bit equipment which will not pass EDH, or for which EDH en-  
SDA 601 Serial Digital Analyzer User Manual  
38  
Reference  
coded signals are not available. This check requires a fixed (un-  
changing) video signal.  
The SDA 601 calculates the Full Field CRC (FFCRC) that is used for  
EDH error checking. Then, for this check, the SDA 601 compares  
the calculated CRC in each field to the CRC calculated for the same  
field in the previous frame. If the incoming video signal is fixed,  
then the calculated CRCs should be identical from frame to frame. If  
the CRCs are not identical, either the transmitted signal has been  
deliberately changed, or a transmission error has altered the signal.  
This check has some limitations. As noted, the signal must be pre-  
sumed to be fixed, and the equipment being checked must therefore  
be temporarily removed from service. Also, embedded audio ancil-  
lary data is by its nature changing from field to field; therefore, this  
check will be useless if audio is embedded in the signal. In the case  
of embedded audio, APCRC Changed is a more appropriate check  
method.  
APCRC Changed — Is also an out-of-service check, very similar to  
the FFCRC Changed checking method, except the checking is lim-  
ited to the active picture data only. This allows the check to be used  
with signals that have constantly changing ancillary data, as do sig-  
nals that contain embedded audio.  
With this checking method, data in the vertical and horizontal re-  
gions is completely unchecked.  
SDA 601 Serial Digital Analyzer User Manual  
39  
SDA 601 Serial Digital Analyzer User Manual  
40  
Appendix A: Characteristics  
The information in this section is included for the convenience of the  
SDA 601 operator. For a full list of instrument specifications, as well  
as performance verification and adjustment procedures, please see  
the SDA 601 Service Manual (Tektronix p/n 070-8914-XX).  
NOTE. Shielded cables were used in the EMI certification of this  
instrument; therefore, it is recommended that shielded cables be used  
when operating. (EC 92)  
Safety Standard Compliance  
The following safety standards apply to the SDA 601:  
H ANSI S82 — Safety Standard for Electrical and Electronic Test,  
Measuring, Controlling, and Related Equipment, 1988.  
H CAN/CSA C22.2 No. 231 M89 — CSA Safety Requirements for  
Electrical and Electronic Measuring and Test Equipment.  
H IEC1010-1 — Safety Requirements for Electrical Equipment for  
Measurement, Control, and Laboratory Use (1990).  
H UL1244 — Standard for Electrical and Electronic Measuring and  
Testing Equipment, Second Edition (1980).  
SDA 601 Serial Digital Analyzer User Manual  
41  
Appendix A: Characteristics  
Specification Tables  
Table 2: Serial Digital Video Input  
Characteristic  
Performance  
Requirements  
Supplemental Information  
Format  
CCIR 601 Component 525/625,  
10 bits data, Scrambled NRZI;  
270 Mb/s. Complies with SMPTE  
259M and CCIR 656.  
Input Impedance  
Input Level  
75  
800 mV ± 80 mV (peak-to-peak)  
at signal source  
Return Loss  
15 dB  
1 MHz to 270 MHz  
Serial Receiver  
Equalization Range  
Proper operation with up  
to 15 dB loss at 135 MHz coaxial cable;  
using coaxial cable with typically up to 200 m.  
Nominally 150 m of Belden 8281  
1?Ǹ loss characteristics.  
f
800 mV launch amplitude.  
EDH (RP-165), 0APCRC  
Error detection protocols  
supported  
Table 3: AUX Output  
Characteristic  
Performance  
Requirements  
Supplemental Information  
Output  
5-bit output; monochrome signal  
Terminated into 75 Ω  
Terminated into 75 Ω  
Terminated into 75 Ω  
22 mV  
White Amplitude  
Sync Amplitude  
DC Offset  
700 mV ± 25%  
300 mV ± 25%  
500 mV  
Quantization  
Impedance  
Return Loss  
75 nominal  
10 dB to 10 MHz  
SDA 601 Serial Digital Analyzer User Manual  
42  
Appendix A: Characteristics  
Table 4: Signal Level Meter  
Characteristic  
Information  
2 dB @ 135 MHz  
Resolution  
Table 5: Physical Characteristics  
Characteristic  
Height  
Information  
5.6 cm (2.2 in)  
9.1 cm (3.6 in)  
19.1 cm (7.5 in)  
Width  
Depth  
Net Weight  
SDA 601  
0.48 kg (1.06 lb)  
SDA with battery pack 0.68 kg (1.5 lb)  
Shipping Weight 1.50 kg (3.31 lb) with AC adapter  
Table 6: Environmental Characteristics  
Characteristic  
Information  
Temperature  
Operating  
Storage  
0° C to +35° C (32 to +95° F)  
–30° C to +65° C (–22 to +149° F)  
Altitude  
Operating  
Storage  
to 15,000 feet (4572 m); IEC 1010-1 compliance to 2000 m  
to 50,000 feet (15420 m)  
Equipment Type  
Test  
Equipment Class  
Installation Category  
Class III (as defined in IEC 1010-1, Annex H)  
Category II (as definded in IEC 1010-1, Annex J)  
Note: Rated for indoor use only.  
Pollution Degree  
Transportation  
Pollution Degree 2 (as defined in IEC 1010-1)  
Meets the requirements of NTSB Test Procedure 1A, category  
II (24 inch drop)  
SDA 601 Serial Digital Analyzer User Manual  
43  
SDA 601 Serial Digital Analyzer User Manual  
44  
Appendix B: Replaceable Parts  
The following replaceable parts for the SDA 601 are available  
through your local Tektronix, Inc. field office or representative.  
It is important when ordering parts to include the following informa-  
tion in your order: Part number; instrument type and number; instru-  
ment serial number; and modification number, if applicable.  
Description  
Tektronix Part No.  
Instructions (card)  
070-8912-xx  
070-8914-xx  
119-4488-00  
016-1229-00  
119-4538-00  
614-0921-00  
614-0913-00  
200-4075-00  
119-4506-00  
333-4146-01  
159-0378-00  
156-4357-00  
386-6897-00  
Service Manual (Optional accessory)  
Rechargeable Battery Pack (Optional accessory)  
Carrying Pouch  
1
AC Adapter  
Case Assembly, Top  
Case Assembly, Bottom  
Battery Door  
LCD Display  
Rear Panel Assembly  
Fuse, 2A  
Touch Memory/Timer Module  
Stand  
1
The U.S. standard adapter. See your Tektronix representative for other adapters.  
SDA 601 Serial Digital Analyzer User Manual  
45  
SDA 601 Serial Digital Analyzer User Manual  
46  
Appendix C: User Service  
Battery Hints  
For optimal battery life and capacity, use the rechargeable NiCad  
battery pack (Tektronix p/n 119-4488-00) in full charge/discharge  
cycles. In other words, fully discharge the battery pack before re-  
charging, and then charge the battery pack until fully charged,  
approximately 16 hours. A new battery pack will take a few charge/  
discharge cycles to reach full capacity.  
WARNING. Install or replace batteries only with the instrument  
switched OFF and the AC adapter disconnected.  
Replace the batteries only with standard AA batteries (1.2–1.5 V,  
nominal), or with the optional rechargeable battery pack.  
Setting the Auto Power Off and Battery Type functions in the Utility/  
Diagnostic/Power Manage submenu (see pages 9 and 33) also has  
an impact on battery life. The battery types are Alkaline (disposable)  
or rechargeable (NiCad). Setting the battery type changes the voltage  
thresholds for both the BATTERY LOW display message and low-  
battery shut down.  
The BATTERY LOW Message  
The warning “BATTERY LOW” will appear on the second line of  
the SDA 601 display when the battery voltage drops below a prede-  
termined level. The level depends on the Battery Type setting. The  
SDA will operate for approximately ten minutes after the message  
first appears. For best results, replace or recharge the batteries when  
you first see this warning.  
Low-battery Shut Down  
To prevent erratic operation at very low power levels, the SDA 601  
will shut itself down if the battery voltage drops below a second,  
lower threshold that also depends on the Battery Type setting.  
SDA 601 Serial Digital Analyzer User Manual  
47  
Appendix C: User Service  
Low-battery shut down can happen with little or no warning if, for  
instance, the instrument has been left on by mistake with Auto Power  
Down disabled. In such cases, the SDA 601 is likely to shut itself  
down almost immediately the next time you switch it on. If this  
happens:  
h Install fresh batteries or operate the instrument with the AC  
adapter, and  
h Confirm that the diagnostic menu Battery Type setting is ap-  
propriate.  
The shut down threshold is higher for rechargeable batteries than for  
disposable. Therefore, you will receive a false BATTERY LOW  
message and may experience premature shut down if using Alkaline  
batteries when the Battery Type is set to “rechargeable.” On the other  
hand, NiCad batteries may be damaged—they can lose their “rechar-  
geability”—if they are discharged to the SDA 601 threshold for dis-  
posable batteries. Be sure to select the correct Battery Type.  
Replacing the Batteries or Battery Pack  
To install AA batteries or the battery pack, open the battery compart-  
ment of the SDA 601 by pressing down on the cover and sliding it in  
the direction of the inscribed arrow, as shown above. When the cover  
tabs line up with the slots in the case, lift the cover away from the  
instrument. Install batteries in alternating directions as indicated by  
the graphic molded into the “floor” of the battery compartment. If  
SDA 601 Serial Digital Analyzer User Manual  
48  
Appendix C: User Service  
using the optional battery pack, take the time to identify both con-  
tacts and install the pack properly.  
Replacing the Touch Memory/Timer Module  
The Touch Memory/Timer module has an internal Lithium battery.  
Eventually, this module will need replacement. Please refer this task  
to qualified service personnel. The original module has been secured  
to its holder with RTV sealant. Take the time to renew this sealant  
after a new module is installed.  
The instrument Date/Time must be reset when a new Touch Memory  
is installed. See page 9.  
Preventive Maintenance  
Under average conditions, the SDA 601 should receive preventive  
maintenance every 2000 hours. This is approximately one year of  
operation. Preventive maintenance includes cleaning, visual inspec-  
tion, a performance check and, if necessary, calibration. See the Ser-  
vice manual for performance verification and adjustment procedures.  
CAUTION. The SDA 601 case is made of molded plastic. Do not allow  
water to get inside any enclosed assembly or component. Do not  
clean any plastic materials with organic cleaning solvents—benzene,  
toluene, xylene, acetone, or similar compounds—because they may  
damage the plastic.  
SDA 601 Serial Digital Analyzer User Manual  
49  
SDA 601 Serial Digital Analyzer User Manual  
50  
Glossary  
ØAPCRC (zero active picture CRC)  
A CRC created by an encoding process in which the last five  
active video words in the last full line of active video are altered  
so that the active picture CRC is exactly zero.  
4:2:2  
A commonly used term for a component digital video format.  
The details of the format are specified in the CCIR-601 standard  
document. The numerals 4:2:2 denote the ratio of the sampling  
frequencies of the single luminance channel to the two color  
difference channels. For every four luminance samples, there are  
two samples of each color difference channel. See CCIR-601.  
AES/EBU  
Informal name for a digital audio standard established jointly by  
the Audio Engineering Society and European Broadcasting  
Union.  
analyze  
When Analyze is pressed the SDA 601 locks to the incoming  
signal (if possible) and monitors it for one second. The status of  
a predefined set of signal characteristics (“conditions”) may then  
be read on the instrument LCD—and the OSD, when an external  
video monitor is used.  
ancillary (ANC) data  
Auxiliary, non-video data that is inserted into any portion of the  
data stream that is not occupied by timing reference signals or  
video data. Component digital signals may have ancillary data  
in both the vertical and horizontal interval portions of the signal;  
composite may have only it only in the horizontal. Described in  
SMPTE 125M.  
Ancillary data may include up to 16 channels of digital audio as  
well as the calculated checkwords (CRCs) and error information  
flags (EDH flags) that are used in verifying the integrity of the  
digital signal and locating the source of any faults.  
SDA 601 Serial Digital Analyzer User Manual  
51  
Glossary  
APCRC (active picture CRC)  
A CRC derived from the samples in the active picture only.  
Described in SMPTE RP 165.  
AUX  
In the SDA 601, the auxiliary output. The AUX output can be  
configured as analog “pseudo-video” (unfiltered DAC output) or  
as the trigger pulse.  
bit serial  
Bit-wise transmission of digital video down a single conductor  
such as coaxial cable. May also be sent through fiber optics.  
This standard is covered under CCIR 656.  
bit stream  
A continuous series of bits transmitted on a line.  
cable equalization  
The process of altering the frequency response of a video  
amplifier to compensate for high frequency losses in coaxial  
cable.  
CCIR  
International Radio Consultative Committee, an international  
standards committee, now replaced by ITU-R.  
CCIR 601  
(See ITU-R BT.601.)  
CCIR 656  
The physical parallel and serial interconnect scheme for  
CCIR-601. CCIR-656 defines the parallel connector pinouts as  
well as the blanking, sync, and multiplexing schemes used in  
both parallel and serial interfaces. Reflects definitions in EBU  
Tech 3267 (for 625 line signals), SMPTE 125M (parallel 525),  
and SMPTE 259M (serial 525).  
clock recovery  
The reconstruction of timing information from digital data.  
SDA 601 Serial Digital Analyzer User Manual  
52  
Glossary  
coding  
Representing each level of a video signal as a number, usually in  
binary form.  
component analog  
The unencoded output of a camera, videotape recorder, etc.,  
consisting of three primary color signals: red, green, and blue  
(RGB) that together convey all necessary picture information. In  
some component video formats, these three components have  
been translated into a luminance signal and two color difference  
signals, for example, Y, BY, RY.  
component digital  
A digital representation of a component analog signal set, most  
often Y, BY, RY. The encoding parameters are specified by  
CCIR 601. The parallel interface is specified by CCIR 656 and  
SMPTE 125M (1991).  
CRC (Cyclic Redundancy Code)  
A binary number that is computed from the digital samples in  
the serial digital video frame. CRCs serve a function similar to  
that of the Parity Bit in the RS-232 serial interface, and are used  
to verify the integrity of the digital video transmission. SMPTE  
RP 165 defines a full field CRC (FFCRC) and an active picture  
CRC (APCRC).  
CRC change group  
An SDA 601 Watch group that contains:  
G APCRC changes  
G FFCRC changes  
G APCRC status (Ø or not Ø)  
The CRCs are monitored; changed CRCs and non–Ø APCRCs  
are reported on an “error second” basis.  
cursor  
In the SDA 601, the “cursor” is used to pinpoint a single word in  
the digital video frame and discover the actual value of the  
selected word and the three that follow. The location of the  
cursor may also be shown with “cross hairs” on a video monitor  
connected to the AUX output.  
SDA 601 Serial Digital Analyzer User Manual  
53  
Glossary  
data value group  
An SDA 601 Watch group that contains:  
G Illegal (data word) values  
G Video samples in/out of range  
The data word values are monitored; illegal values and out of  
range samples are reported on an “error second” basis.  
D1  
A component digital video recording format that uses data  
conforming to the CCIR-601 standard. Records on 19 mm  
magnetic tape. (Often used colloquially to indicate 4:2:2  
component digital video.)  
deserializer  
A device that converts serial digital information to parallel.  
digital word  
The number of bits treated as a single entity by the system.  
Digital video words are 8 or 10 bits. In the active picture portion  
of digital video, each word represents a single luminance or  
color difference sample.  
EAV  
End of active video in component digital systems.  
EBU  
European Broadcasting Union. An organization of European  
broadcasters that, among other activities, produces technical  
statements and recommendations for the 625/50 line television  
system.  
EBU TECH.3267-E  
The EBU recommendation for the parallel interface of 625 line  
digital video signal. A revision of the earlier EBU Tech. 3  
246-E, which in turn was derived from CCIR-601 and  
contributed to CCIR-656 standards.  
EDH (error detection and handling)  
Proposed SMPTE RP-165 for recognizing inaccuracies in the  
serial digital signal.  
SDA 601 Serial Digital Analyzer User Manual  
54  
Glossary  
EDH flag  
A digital “marker” inserted in the data stream to feed forward  
information regarding detected errors. EDH flags are set by  
many input/output devices to help identify faulty equipment in  
the signal path. The flags defined in RP-165 are: error detected  
here; error detected already; internal error detected here;  
internal error detected already; and unknown error status.  
EDH Group  
An SDA 601 Watch group that contains:  
G APCRC EDH errors  
G FFCRC EDH errors  
G EDH flags (set/not set)  
The CRCs and flags are monitored. Flag status is reported, but  
not considered an error condition; EDH errors are reported on an  
error second basis.  
Equalization (EQ)  
Process of altering the frequency response of a video amplifier  
to compensate for high-frequency losses in coaxial cable.  
embedded audio  
Digital audio is multiplexed onto a serial digital data stream.  
error second  
A second that contains at least one error. An error second can  
result from one isolated error, or a “burst” of many errors all in  
the period of one second.  
FFCRC (full field CRC)  
A CRC derived from the samples in a full field of digital video.  
Described in SMPTE RP-165.  
format group  
An SDA 601 Watch group that contains:  
G Line/field length  
G TRS (includes EAV and SAV)  
G ANC format  
G Zero-length ANC  
SDA 601 Serial Digital Analyzer User Manual  
55  
Glossary  
The four characteristics are monitored. Errors in line/field length,  
TRS, or ANC format are reported on an error second basis; Zero-  
length ANC is considered an error, and error seconds are also  
reported.  
group  
See Watch Group.  
highlighting  
An SDA 601 operating mode in which pixels in the AUX output  
that correspond to selected error conditions “flash” when that  
error occurs. Permits visual monitoring of the frequency and  
placement of the errors in context of the video signal and  
picture.  
horizontal interval (horizontal blanking interval)  
The time period between lines of active video. In serial digital  
video, it is the time between EAV and SAV.  
illegal value  
Data levels 0 to 3 and 1020 (3FC ) to 1023 (3FF ) are reserved  
h
h
to indicate timing references. These values are considered  
illegal if they occur elsewhere.  
in range (video)  
All video words are within the permissible range of values;  
luminance between levels 64 and 940 (40 and 3AC ), and color  
h
h
difference between levels 64 and 960 (40 and 3C0 ).  
h
h
I/O menu  
The SDA 601 I/O menu containing selections for configuring the  
AUX pseudo-video output.  
ITU-R  
The International Telecommunication Union, Radio Commu-  
nication Sector (replaces the CCIR).  
ITU-R BT.601  
An international standard for component digital television from  
which was derived SMPTE 1 25M (was RP-l25) and EBU  
3246E standards. CCIR defines the sampling systems, matrix  
SDA 601 Serial Digital Analyzer User Manual  
56  
Glossary  
values, and filter characteristics for both Y, BY, R–Y and RGB  
component digital television.  
LSB  
Least significant bit.  
MSB  
Most significant bit.  
multiplexer (mux)  
Device for combining two or more electrical signals into a  
single, composite signal.  
NRZ  
Non return to zero. A coding scheme that is polarity sensitive.  
O = logic low, 1 = logic high.  
NRZI  
Non return to zero inverse. A video data scrambling scheme that  
is polarity insensitive. O = no change in logic; 1 = a transition  
from one logic level to the other.  
OSD (on-screen display)  
In the SDA 601, a 12 line, 24 column character display that may  
be superimposed on the AUX output and viewed on an attached  
video monitor. For convenient review of Analysis results and  
Watch status.  
pixel  
The smallest distinguishable and resolvable area in a video  
image. A single point on the screen. In digital video, a single  
sample of the picture. Derived from the words picture element.  
preset, Presets Menu  
In the SDA 601, the current instrument configuration may be  
saved as a preset for later recall. Presets are saved and recalled  
through the Presets Menu.  
pulse cross  
An SDA 601 AUX output mode that allows the user to “see” the  
horizontal and/or vertical intervals, which are normally blanked  
SDA 601 Serial Digital Analyzer User Manual  
57  
Glossary  
in serial video monitors. The original four-word timing  
reference signals (TRS, which include EAV and SAV) are  
replaced with legal video samples, and analog H and V syncs  
inserted in the original active picture region.  
Rec. 601  
See CCIR-601.  
reclocking  
The process of clocking the data with a regenerated clock  
resolution  
The number of bits (four, eight, ten, etc.) determines the  
resolution of the digital signal.  
4-bits = a resolution of 1 in 16  
8-bits = a resolution of 1 in 256  
10-bits = a resolution of 1 in 1024  
Eight bits is the minimum acceptable for broadcast TV.  
RP-125  
See SMPTE 125M.  
SAV  
Start of active video in component digital systems.  
scrambling  
1. To transpose or invert digital data according to a prearranged  
scheme in order to break up the low frequency patterns  
associated with serial digital signals. 2. The digital signal is  
shuffled to produce a better spectral distribution.  
serial digital  
Digital information that is transmitted in serial form. Often used  
informally to refer to serial digital television signals.  
SMPTE (Society of Motion Picture and Television Engineers)  
A professional organization that recommends standards for the  
television and film industries.  
SDA 601 Serial Digital Analyzer User Manual  
58  
Glossary  
SMPTE 125M  
Recommended practice for bit parallel digital interface for  
component video signals. SMPTE 125M defines the parameters  
required to generate and distribute component video signals on a  
parallel interface.  
SMPTE RP-165  
Recommended practice for “Error detection checkwords and  
status flags for use in bit-serial digital interfaces for television.”  
It defines the APCRC, FFCRC, and EDH flags as well as the  
ancillary data packets that contain them.  
SMPTE 244M  
The SMPTE recommended practice for bit parallel digital  
interface for composite video signals. SMPTE 244M defines the  
parameters required to generate and distribute composite video  
signals on a parallel interface.  
SMPTE 259M  
The SMPTE recommended practice for 525 line serial digital  
component and composite interfaces.  
stuck bit  
A bit in the video sample words that has the same value (0 or 1)  
for the entire active picture region of at least one complete field.  
A stuck bit may indicate a defective component in the digital  
video system “upstream” of the SDA 601.  
synchronous  
A transmission procedure by which the bit and character stream  
are slaved to accurately synchronized clocks, both at the  
receiving and sending end.  
sync word  
A synchronizing bit pattern, differentiated from the normal data  
bit patterns, used to identify reference points in the television  
signal; also to facilitate word framing in a serial receiver.  
transport layer  
Having to do with the transmission path from a digital video  
generator to the receiver. The FFCRC, APCRC, and EDH flags  
SDA 601 Serial Digital Analyzer User Manual  
59  
Glossary  
are the primary means of monitoring the integrity of the  
transport layer.  
TRS  
Timing reference signals in digital video systems (four words  
long). Defined, for component systems, in SMPTE 125M.  
truncation  
Process by which digital signals are converted to lower  
resolution. The least significant bits (as many as necessary) in  
each sample are “stripped,” or simply ignored. In digital video,  
10-bit samples may be truncated for compatibility with 8-bit  
equipment.  
Utility Menu  
The “catch-all” menu of the SDA 601 in which seldom-used  
configuration and diagnostic utilities are found. Selected by  
holding Lock Out down while pressing ON.  
video missing  
Reported by the SDA 601 in both Analyze and Monitor modes  
when the EAV and SAV are absent from the digital signal.  
Watch  
The SDA 601 operating mode for monitoring selected  
characteristics of the input signal. User may set alarms to trigger  
on error conditions. Explained in detail beginning on page 16 of  
this manual.  
Watch Group  
In the SDA 601, a collection of related signal characteristics or  
“conditions” that, for convenience, may be selected for  
monitoring when the Watch menu is set to Group Select  
(through the Utility menu).  
word  
See digital word.  
zero-length ANC  
Reported by the SDA 601 when an ancillary data “Data Count  
word” with value Ø is detected.  
SDA 601 Serial Digital Analyzer User Manual  
60  
Manual Change Information  
At Tektronix, we continually strive to keep up with the  
latest electronic developments by adding circuit and  
component improvements to our instruments as soon as  
they are developed and tested.  
Sometimes, due to printing and shipping requirements,  
we can’t get these changes immediately into printed  
manuals. Hence, your manual may contain new change  
information on the following pages.  
A single change may affect several sections. Since the  
change information sheets are carried in the manual until  
all changes are permanently entered, some duplication  
may occur. If no such change pages appear following  
this page, your manual is correct as printed.  
MANUAL CHANGE INFORMATION  
Date:  
Change Reference:  
10/13/94  
M81605  
Product:  
SDA 601 Users  
Manual P/N:  
070–8913–01  
Effective S/N:  
B020000  
Text Changes  
OPERATING BASICS  
Displaying the Signal Level, Page 20  
CHANGE the last sentence preceding the Cursor discussion TO READ:  
After selecting another operating mode, the Signal Level display  
may be reselected by pressing the front panel SLM (A) key, or may  
be toggled On/Off through the Display Select key/menu (see page 29).  
Cursor, Page 20,  
CHANGE the Cursor discussion TO READ:  
Cursor  
In Cursor mode, selected by pressing the Cursor (B) key, the SDA 601  
is capable of locating a single word in the digital video frame and  
displaying the actual value of the selected word and the three that  
follow. The selected words location is pinpointed by “cross hair”  
cursors on a video monitor connected to the AUX output. The word  
is selected by positioning the cursor with the arrow keys. To com-  
pletely exit this mode, press the Review (G) key.  
The address/coordinates of the word, and its actual hexadecimal val-  
ue, may be viewed on the SDA 601 display, as shown in Figure 14.  
Figure 14: The Cursor Data Display  
Page 1 of 4  
Date: 10/13/94  
Change Reference: M81605  
The first line of the cursor data display contains the hexadecimal  
values of the selected word and the three that follow it. Values typi-  
cal for the SAV timing and reference signal are shown in Figure 10.  
The video “type” of the selected word is indicated by the sample ID:  
B = C color difference  
B
Y = Cosited luminance  
R = C color difference  
R
y (lowercase) = Isolated luminance  
The second line contains the address or coordinates of the selected  
word. In the example, the selected word is number 1712 of line 4 in  
field 1.  
The cursor movement icon is present on the second line when you  
can use the arrow keys to position the cursor. Normal cursor move-  
ment is one line for each press of the Y or B key, and one word per  
press of the A or " key. Pressing Shift twice (to invoke shift lock)  
will increase horizontal movement to 20 words per key press, and  
vertical movement to 10 lines per key press. Press Shift again to re-  
turn to “fine” cursor control. The Cursor cross hairs in the AUX out-  
put may be turned off through the I/O menu (see page 29).  
The Cursor Data display may also be invoked through the Display  
Select menu, but Cursor cross hairs must be enabled separately,  
through the I/O menu (see page 29).  
Highlighting, Page 21,  
CHANGE the To use Highlighting example TO READ:  
To use Highlighting:  
1. Configure the SDA 601 to monitor one or more of the above  
items; see “Watching a Signal” beginning on page 14.  
2. Enter the I/O menu (press Shift, then Insert On/Off).  
3. The first I/O menu item is Highlighting. Use the A or " key to  
select “On, Dim Video” then press Enter to confirm the choice.  
Dim Video reduces the video signal by 50%, ensuring good con-  
trast between the video signal and highlighted pixels.  
4. Exit the I/O menu by pressing any rectangular key.  
5. If necessary, start or restart the Watch session by pressing Watch.  
Page 2 of 4  
Date: 10/13/94  
Change Reference: M81605  
6. The default OSD will obscure any highlighting in the portion of  
the picture that it occupies. Therefore, if the OSD is on, toggle it  
off with the Insert On/Off key.  
Pulse Cross, Page 22,  
CHANGE the Pulse Cross discussion TO READ:  
Pulse Cross  
Pulse Cross is an SDA 601 AUX output mode that allows the user to  
“see” the horizontal and/or vertical intervals, which are normally  
blanked in serial video monitors. The original four-word timing ref-  
erence signals (TRS, which contain EAV and SAV) are replaced with  
legal video samples, and analog H and V sync information is inserted  
in the original active picture region. To invoke pulse cross, press the  
Pulse Cross (E) key, which will scroll through the pulse cross modes:  
Normal — the default  
HCross — reveals the “horizontal interval” region of the signal  
VCross — reveals the “vertical interval” region of the signal  
Both — combines HCross and VCross  
To invoke pulse cross through the I/O menu:  
1. Enter the I/O menu (press Shift, then Insert On/Off).  
2. Press the B key repeatedly to scroll down to the Pulse Cross  
menu item.  
3. With the A / " keys, scroll to the desired pulse cross option. The  
options are:  
Normal — the default  
HCross — reveals the “horizontal interval” region of the signal  
VCross — reveals the “vertical interval” region of the signal  
Both — combines HCross and VCross  
4. Press Enter to select the new option.  
5. Press any rectangular key to exit the I/O menu.  
Page 3 of 4  
Date: 10/13/94  
Change Reference: M81605  
REFERENCE  
I/O Menu, Page 29,  
CHANGE the I/O Menu TO READ:  
I/O Menu  
Enter the I/O menu by pressing Shift, then Insert On/Off.  
(1)  
(2)  
(3)  
(4)  
Highlighting  
Off <> On <> On, Dim Video  
Video Cursor  
No Display <> Display  
Pulse Cross  
Normal <> HCross <> VCross <> Both  
AUX  
Pixmon Y <> Pixmon R–Y <> Pixmon B–Y  
Utility Menu, Page 30,  
CHANGE the Printer Setup and RS232 Setup portions of the Utility Menu  
TO READ:  
(2)  
Printer Setup..  
Press Enter  
(a)  
(b)  
(c)  
(d)  
(e)  
(f)  
Page Limit12  
Min = 0 <> Max = 250 [default = 10]  
Top of Form  
Form Feed <> End of Lines13 <> 3 End of Lines14  
Line per Page  
Min = 0 <> Max = 250 [default = 60]  
End of Line  
Line Feed (LF) <> CarriageRet(CR) <> CR and LF  
Flow Control  
Software (XOFF) <> Hardware (DTR) <> None  
Previous Menu  
Press Enter  
(3)  
RS232 Setup...  
Press Enter  
(a)  
(b)  
(c)  
Set Baud Rate  
19200 <> 9600 <> 4800 <> 2400 <> 1200 <> 300  
Set Parity  
None <> Odd <> Even <> Mark <> Space  
Previous Menu  
Press Enter  
Page 4 of 4  

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