User’s Manual
VSC 75
Video Scan Converter
68-483-01
Printed in the USA
Extron Electronics, Europe
Extron Electronics, Asia
Extron Electronics Information
Extron Electronics, USA
™
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800.633.9876 714.491.1500 FAX 714.491.1517
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™
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:
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Ta b le o f Co n t e n t s
Ch a p t e r 1 • In t ro d u ct io n .......................................................... 1-1
Ab o u t t h e VSC 75 ................................................................... 1-2
Fe a t u re s ...................................................................................... 1-2
Ch a p t e r 2 • In st a lla t io n a n d Op e ra t io n ......................... 2-1
In st a lla t io n Ove rvie w .......................................................... 2-2
Mo u n t in g t h e VSC 75 ........................................................... 2-2
Tabletop/desktop placement ................................................ 2-2
Rack mounting ....................................................................... 2-3
Fro n t Pa n e l Fe a t u re s ............................................................ 2-4
Re a r Pa n e l Fe a t u re s .............................................................. 2-6
Ca b lin g ........................................................................................ 2-7
Mac-HV/VGA cable connector pin assignments ................... 2-9
Op t im izin g t h e Im a g e ....................................................... 2-10
Tro u b le sh o o t in g ................................................................... 2-11
If the image does not appear .......................................... 2-11
If the image is not displayed correctly ............................. 2-12
If the scan converter does not respond to controls ......... 2-12
Ch a p t e r 3 • Se ria l Co m m u n ica t io n ................................... 3-1
RS-232 Pro g ra m m e r’s Gu id e ............................................ 3-2
VSC-initiated messages .......................................................... 3-2
VSC error responses ............................................................... 3-3
Time-out ................................................................................. 3-3
Using the command/response table ..................................... 3-3
Command/response table ..................................................... 3-4
Co n t ro l So ft w a re fo r Win d o w s ...................................... 3-6
Installing the software .......................................................... 3-6
Using the software ................................................................ 3-6
Ap p e n d ix • Sp e cifica t io n s , Pa rt Nu m b e rs, a n d
Acce sso rie s ........................................................................................ A-1
Sp e cifica t io n s ......................................................................... A-2
In clu d e d Pa rt s ......................................................................... A-4
Acce sso rie s ............................................................................... A-4
68-483-01 B
Printed in the USA
09 00
VSC 75 Table of Contents
i
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Ta b le o f Co n t e n t s, co n t ’d
VSC 75
Chapter One
1
In t ro d u ct io n
About the VSC 75
Features
VSC 75 Table of Contents
ii
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In t ro d u ct io n
Flicker filtering control — The flicker filter level is user-
selectable from the front panel for control of flicker
reduction.
Ab o u t t h e VSC 75
Extron’s VSC 75 is a high resolution computer-to-video
scan converter with all-digital controls. The VSC 75
converts a computer video signal into two display outputs
— composite video and S-video — for simultaneous scan-
converted output on two separate devices. This allows the
video from a computer to be displayed on a television
monitor or recorded on a DVD, VCR, video editing bay or
other recording device. All of the outputs are NTSC/ PAL.
Test mode — This feature causes a color bar test pattern to
be displayed on the output devices.
RS-232 control — The VSC 75 can be controlled via
computer or another control device through an
RS-232 connection and Extron’s Simple Instruction
Set™ (SIS™) or the Extron graphical control program
for Windows®.
This scan converter accepts one Macintosh or VGA
computer input of a resolution up to 1280 x 1024, and
provides a local monitor loop-out.
Executive mode — To prevent unauthorized or accidental
adjustments to the VSC 75’s settings via front panel
controls, executive mode locks all the front panel
features except centering controls. Adjustments can
still be made via RS-232 control when executive
mode is active.
The VSC 75 is 1U high and one half rack wide. It is rack
mountable, and has an internal, autoswitching power
supply. It can be controlled via front panel controls and
RS-232 remote control.
Output formats — NTSC/ PAL composite video output and
S-video output are continuously available on rear
panel connectors.
CENTERING/PAN SIZE
FLICKER
FILTER
I
MIN/
MAX
II
FREEZE
TEST
SIZE
VSC 75
SCAN CONVERTER
VGA or Macintosh input and local monitor output — The
15-pin HD and 15-pin D connectors allow easy
connection to a PC or Mac local monitor. The
included male Mac-VGA cable connects the VSC 75
to the computer without need for additional
adapters.
100-240 V
0.3A
I
OUTPUTS
VIDEO
N
P
U
T
S
S-VIDEO
MAC
RS-232
Rack mountability — The VSC 75 can be rack mounted on
one side of an optional 1U rack shelf (Extron part
#60-190-01).
VGA
50/60 Hz
Fig u re 1 — VSC 75 fro n t a n d re a r p a n e ls
Fe a t u re s
Picture sizing/zoom controls — Separate digital rotary
controls on the VSC 75 allow horizontal and/ or
vertical picture resizing to fit the display device or
zoom in or out. These settings are stored in user-
defined memories.
Picture centering and panning — Center the picture
horizontally and vertically or pan across the picture
with these front panel rotary controls.
Freeze mode — This feature provides a still image of the
scan-converted picture.
VSC 75 Introduction
1-2
VSC 75 Introduction
1-3
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In t ro d u ct io n , co n t ’d
VSC 75
Chapter Tw o
2
In st a lla t io n a n d Op e ra t io n
Installation Overview
Mounting the VSC 75
Front Panel Features
Rear Panel Features
Cabling
Optimizing the Image
Troubleshooting
VSC 75 Introduction
1-4
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In st a lla t io n a n d Op e ra t io n
screws from the underside of the shelf, and securely
fasten them into diagonally-opposite corners as
shown in figure 2.
In st a lla t io n Ove rvie w
To install and set up the VSC 75, follow these basic steps:
Turn all of the equipment off. Make sure that the
source computer, the VSC 75, and the output devices
(projector, monitors) are turned off and disconnected
from the power source.
1
Mount the scan converter. See “Mounting the
VSC 75” on page 2-2.
2
3
4
Set the rear panel toggle and DIP switches. See “Rear
Panel Features” on page 2-6.
Attach the cables. See “Cabling” on page 2-7 and
“Rear Panel Features” on page 2-6.
False front panel
uses 2 front holes
Connect power cords and turn on all the equipment.
5
6
The image should now appear. If not, ensure that all
devices are plugged in and receiving power. Check
the cabling and rear panel switches, and make
adjustments as needed. Refer to “Troubleshooting”
on page 2-11 if needed.
FREEZ
FLICKER
FIL
TER
TEST
I
II
CENTERING/PAN SIZE
SIZE
MIN/
MAX
(2) 4-40 x 1/8" Screws
SCAN CO
V
N
S
VE
C
R
75
TER
7
Optimize the image for your display environment.
See “Optimizing the Image” on page 2-10.
Use 2 mounting holes on
opposite corners
Mo u n t in g t h e VSC 75
Fig u re 2 — Ra ck m o u n t in g
Select tabletop placement or rack mounting. Follow the
appropriate installation instructions on these two pages.
4.
Attach the false front panel (provided with the rack
shelf) to the unoccupied side of the rack (as shown
above), or install a second half-rack-width device in
that side by repeating steps 1 – 3.
Ta b le t o p /d e skt o p p la ce m e n t
For tabletop or desktop placement only, install the self-
adhesive rubber feet/ pads (provided) onto the four corners
of the bottom of the enclosure.
5.
Attach the rack shelf to the rack using four 10-32 x ¾”
bolts (provided). Insert the bolts through #10 beveled
washers, then through the holes in the rack ears and
rack, as shown above.
Ra ck m o u n t in g
1.
If feet were installed on the bottom of the VSC 75,
remove them.
2.
Place the VSC 75 on one half of the 1U (one unit high,
one unit wide) rack shelf (part #60-190-01). Align the
front of the VSC 75 with the front of the shelf, and
align the threaded holes on the bottom of the VSC 75
with the holes in the rack shelf.
3.
Attach the VSC 75 to the rack shelf with the two
provided 4-40 x 1/ 8” machine screws. Insert the
VSC 75 Installation and Operation
2-2
VSC 75 Installation and Operation
2-3
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In st a lla t io n a n d Op e ra t io n , co n t ’d
Fro n t Pa n e l Fe a t u re s
controls. Adjustments can still be made via RS-232
control when executive mode is active.
CENTERING/PAN SIZE
FLICKER
FILTER
Test button and LED — Press this button to display a
color bar test pattern on the output devices. The test
indicator LED lights while this control is active. The
test pattern continues to be displayed until you press
the Test button again.
3
I
MIN/
MAX
II
FREEZE
TEST
SIZE
VSC 75
SCAN CONVERTER
1
2
3
4
5
6
7
8
This LED lights to indicate that the test feature is
active.
Fig u re 3 — VSC 75 fro n t p a n e l
Flicker filter button — Press this button to choose
one of the two levels of vertical filtering. Select the
setting that yields the least amount of flicker.
4
Adjustments to front panel features and controls do
not affect the local monitor.
Power/signal lock LED — If this indicator...
• Lights amber yellow without blinking, the VSC 75
is receiving power, but no input signal is present.
• Blinks green, the unit is receiving power, but the
input signal has a resolution that is too low or
too high.
1
Flicker filter LEDs — These LEDs light yellow to
indicate the selected level of vertical filtering.
5
6
Size button and LED — Press this button to activate
the size feature. When Size is active, the picture can
be resized vertically and/ or horizontally by rotating
the vertical and horizontal Centering/ Pan/ Size
rotary controls (10). Observe the picture on screen as
you adjust the controls. To zoom in, adjust the size
so the picture exceeds the screen’s limits. The Min/
Max LED (11) lights red when the minimum or
maximum limit of a control has been reached.
• Lights green without blinking, the input signal is
within range, and the VSC 75 has locked to that
particular resolution.
Freeze button and LED — Press this button to
display (or record) a still image of the scan-converted
picture from both display outputs. The freeze
indicator LED lights while this control is active. To
turn this feature off, press the Freeze button again.
Freeze affects both outputs simultaneously. The
image on the local monitor will not be frozen.
2
The LED lights green to indicate that the size feature
is active.
The size feature affects both display outputs
simultaneously. The local monitor loop-out is not
affected.
The LED lights to indicate that the freeze feature is
active.
The size feature remains active for 8 seconds after the
rotary controls become inactive. The rotary controls
then default to the standard centering and pan
functions. To turn the size feature off, press the Size
button again.
All controls except Freeze will be locked on the front
panel while freeze mode is active. Press the Freeze
button again to turn off freeze mode and unlock the
other controls.
See Freeze button (2) for information on using
executive mode.
+
Executive mode release (Freeze + Size) — Press
the Freeze button and the Size button
2
6
simultaneously for 2 seconds to release executive
mode. Executive mode, which can be activated only
by issuing an RS-232 command (see page 3-5),
prevents unauthorized or accidental adjustments to
the VSC 75’s settings via front panel controls by
locking all the front panel features except centering
Vertical ( ) and horizontal ( ) Centering/Pan/Size
rotary controls — Turn these knobs to adjust vertical
or horizontal centering (when the image size does
not exceed the screen size) and panning (when the
image size exceeds the screen size) in the regular
mode. Rotate these controls to adjust picture size
when the size feature is active.
7
VSC 75 Installation and Operation
2-4
VSC 75 Installation and Operation
2-5
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In st a lla t io n a n d Op e ra t io n , co n t ’d
ON — The output is in PAL (Phase Alternate
Line) format (625 lines/ frame at 50 Hz
vertical, 15.625 kHz horizontal).
Min/Max LED — This lights red when the minimum
or maximum limit of a control (6) has been reached.
8
OFF — The output is in NTSC (National
Television Standards Committee) format
(525 lines/ frame at 60 Hz vertical, 15.734
kHz horizontal).
Re a r Pa n e l Fe a t u re s
100-240 V
0.3A
I
OUTPUTS
N
P
U
T
S
VIDEO
S-VIDEO
MAC
RS-232
2 — 75 Ohm (video input termination) — This
switch provides a way to prevent blooming
when no local monitor or termination adapter is
connected.
VGA
50/60 Hz
1
2
3
4
5
6
7
ON — The VSC 75 provides 75 ohm video
input termination. Select this setting
when a local monitor is not used.
Fig u re 4 — VSC 75 re a r p a n e l
AC power input connector — Connect a standard
IEC AC power cord here for power input (100VAC to
240VAC, 50/ 60 Hz).
1
OFF — The VSC 75 provides high Z (high
impedance) video input termination.
Use this setting when the system
includes a local monitor.
VGA computer input/Macintosh local monitor
output connector — Connect a VGA-type computer
to the VSC 75 via this 15-pin D connector (and the
provided Mac-VGA cable) to use a VGA-type
computer as the video signal source.
2
S-video output connector — This 4-pin mini-DIN
connector is for S-video output.
5
6
Composite video (Video) output connector —
Composite video output is continuously available on
this BNC connector.
If a Macintosh, instead of a VGA-type PC, is used as
a source, this connector serves as the Mac local
monitor pass-through output connector.
RS-232 connector — Connect a computer or RS-232
control module to this 9-pin D connector to allow
remote control using the Simple Instruction Set or the
Extron graphical control program for Windows. See
chapter 3, “Serial Communication” for details.
7
Macintosh (Mac) input/VGA local monitor output
connector — Connect a Macintosh computer to the
VSC 75 via this 15-pin HD connector (and the
provided Mac-VGA cable) to use a Mac as the video
signal source.
3
If a VGA/ SVGA-type computer, instead of a
Macintosh, is used as a source, this connector serves
as the VGA local monitor pass-through output
connector.
Ca b lin g
Attach cables to the scan converter as detailed in the steps
below. Figure 6 on page 2-9 shows how the system looks
when cabling is finished.
DIP switches — These two switches select the signal
standard (NTSC or PAL) applied to the scan
converted video output, and the video input
termination (75 ohm or high impedance).
4
1.
Connect the local monitor via its video input cable to
the corresponding (Mac or VGA) “input” connector
on the VSC 75’s rear panel.
2.
Using the included Mac-VGA cable, connect the
computer ’s video output to the other input connector.
See figure 5 and the pin assignment information on
page 2-9.
1 — PAL Out — Select the output standard with this
switch. This switch affects both of the display
outputs (composite video and S-video), but not
the local monitor.
•
If the source computer is a Macintosh, plug the
VGA (15-pin HD) end into the VSC 75, and plug
VSC 75 Installation and Operation
2-6
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VSC 75 Rear Panel
the other (15-pin D) end into the computer’s
100-240
V
0.3A
video output connector.
I
OUTPUTS
N
P
U
T
S
VIDEO
MAC
VGA
S-VIDEO
•
If the source computer is a VGA-type PC, plug
the Mac (15-pin D) end into the VSC 75, and plug
the other (15-pin HD) end into the computer’s
video output connector.
50/60 Hz
RS-232
RS-232 Control
or
100-240
V
0.3A
100-240
V
0.3A
or
I
I
N
P
U
T
S
N
P
U
T
S
MAC
VGA
MAC
VGA
PC Computer
Mac Computer
Videoconference
System (S-video)
VCR
(Composite Video)
Monitor
50/60 Hz
50/60 Hz
Fig u re 6 — A t yp ica l VSC 75 syst e m
a p p lica t io n
Ma c-HV/VGA ca b le co n n e ct o r p in a ssig n m e n t s
PC Computer
Mac Computer
The illustration below shows the pin locations on the 15-pin
connectors at opposite ends of the Mac-HV/ VGA cable that
is used for connecting the computer to the VSC 75.
Fig u re 5 — Ma c-VGA ca b le lo ca l m o n it o r
co n n e ct io n s
6
1
5
10
1
8
If a local monitor will not be used, set the 75 Ohm DIP
switch to On (75 ohms), or install a termination
adapter on the unused local monitor connector.
9
15
11
15
D15 Pin Locations
Male
HD15 Pin Locations
Male
3.
4.
5.
Set the PAL Out (NTSC/ PAL output) DIP switch. Use
“Rear Panel Features” on page 2-6 as a guide.
Connect the composite video display or recording
device to the composite video output BNC connector.
Fig u re 7 — VGA (15-p in HD) a n d Ma c (15-p in D)
co n n e ct o r p in lo ca t io n s
Connect a cable from the input of the second video
display/ recording device (projector, monitor, VCR) to
the S-video output 4-pin mini-DIN connector.
The table on the next page lists signals and their pin
assignments for both the VGA (15-pin HD) and
Mac (15-pin D) connectors of this cable.
6.
7.
If RS-232 control will be used, connect the RS-232
remote controller or computer to the RS-232 connector.
Connect power cords and turn on all the equipment.
The system is now ready for operation.
Figure 6 shows typical system installation and cable
connections.
VSC 75 Installation and Operation
2-8
VSC 75 Installation and Operation
2-9
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In st a lla t io n a n d Op e ra t io n , co n t ’d
3.
4.
Press the Size button again to turn the size feature off.
VGA Pin
Fu n ct io n
Ma c Pin
Center the picture by rotating the horizontal and
vertical Centering/ Pan/ Size rotary controls.
1
2
3
Red video
Green video
Blue video
2
5
9
5.
Repeat steps 1 through 4 as needed.
4
5
ID bit
ID bit
4
8
Select the filtering level
1.
Press the flicker filter button to select the filtering
level that gives the least amount of flickering. The
LEDs next to the flicker button will light to indicate
the selected level of filtering.
6
7
8
Red ground
Green ground
Blue ground
1
6
13
9
Not used
—
10
11
12
13
14
15
Composite & vertical sync gnd 11, 14
If the filter is set before the image size is adjusted,
you must set the filter again after adjusting the
image size.
ID bit
ID bit
7
10
15
12
3
Horizontal sync
Vertical sync
Tro u b le sh o o t in g
ID bit/ composite sync
The image should appear properly on the screen(s).
If t h e im a g e d o e s n o t a p p e a r
1.
2.
3.
Ensure that all devices are plugged in.
Op t im izin g t h e Im a g e
Make sure that each device is receiving power.
After you have installed the scan converter, follow the
procedures in this section in sequence. This will help you
configure the scan converter for the best settings for your
display environment.
Check the cabling, wiring and grounding, and make
adjustments as needed. Ensure that the rear panel
output selection toggle switch and PAL Out DIP
switch are set for the formats that match the cable
configuration and the requirements of the display/
recording devices.
Select the output standard
1.
Select the output standard with the PAL Out DIP
switch. This switch affects both display outputs (com-
posite video and S-video), but not the local monitor.
4.
5.
Verify that the 75 Ohm video input termination DIP
switch has been set correctly.
ON — The output is in PAL format.
OFF — The output is in NTSC format.
To test the system setup and output, press the Test
button on the front panel, or substitute a video test
generator for the computer input.
Size the image to fill the screen
6.
7.
Confirm that the input is receiving a signal with a
com-patible scan rate (horizontal frequency between
24 kHz and 70 kHz, and a vertical frequency of 50 Hz
to 120 Hz).
1.
2.
Press the Size button on the front panel.
Rotate the vertical and horizontal Centering/ Pan/ Size
rotary controls to adjust the vertical and horizontal
size. Observe the picture on screen as you adjust the
controls. The Min/ Max LED will light red when the
minimum or maximum limit of a control is reached.
Call Extron’s customer support hotline if needed. Be
prepared to discuss the steps you have taken and the
equipment involved.
The size feature affects both display outputs, but local
monitor loop-out is not affected. The size function
remains active for 8 seconds after the rotary controls
become inactive. The rotary controls then default to
the standard centering and pan functions.
VSC 75 Installation and Operation
2-10
VSC 75 Installation and Operation
2-11
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In st a lla t io n a n d Op e ra t io n , co n t ’d
If t h e im a g e is n o t d isp la ye d co rre ct ly
VSC 75
Symptoms
Solutions
The picture is
shifted off the
screen edges.
Adjust the centering and sizing controls
(
,
).
The image is
stable, but it has
ghosting or
Change the 75 ohm/ high Z video input
termination. If that doesn’t solve the
problem, use a different input cable.
blooming.
Video input may be double-terminated. If
a local monitor or a termination adapter is
attached to the local monitor output
connector, make sure that the 75 Ohm
video input termination DIP switch is set
to Off (for high Z termination).
The picture is
faint or cuts out,
and the signal is
weak.
Adjust the hue/ tint and color controls on
the display device.
The picture
appears without
color.
Make sure that the video display/
recording equipment is using the same
standard (NTSC or PAL) as the VSC 75.
Chapter Three
The image still
does not display
correctly.
Call Extron’s customer support hotline.
3
If t h e sca n co n ve rt e r d o e s n o t re sp o n d t o co n t ro ls
Symptoms
Solutions
Se ria l Co m m u n ica t io n
The VSC 75 may be set for
Executive mode.
The picture does not move
on screen when the
horizontal and vertical
centering controls are
rotated, and the flicker
filter setting does not
change when the flicker
filter button is pressed.
Adjustments can be made via
RS-232 control, or...
RS-232 Programmer’s Guide
Executive mode can be turned
off by pressing the Freeze and
Size controls simultaneously for
2 seconds. See page 2-4.
Control Software for Windows
Ensure that the baud rate
(9600 baud) and communication
protocol are set correctly. See
page 3-2.
There is no response to
commands from the
RS-232 controller.
VSC 75 Installation and Operation
2-12
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Se ria l Co m m u n ica t io n
The VSC 75 can be controlled by a host computer or other
VSC e rro r re sp o n se s
control device via an RS-232 connection with a protocol of
9600 baud, 1 stop bit, no parity, and no flow control. The
control device (host) can use either Extron’s Simple
Instruction Set (SIS) or the graphical control program for
Windows.
When the VSC 75 receives a valid SIS command, it executes
the command and sends a response to the host device. If
the VSC 75 is unable to execute the command because the
command is invalid or it contains invalid parameters, it
returns an error response to the host. The error response
codes and their descriptions are as follows:
5
1
The rear panel RS-232 9-pin D connector has
the following pin assignments:
9
6
E09 – Invalid function number (the number is too large)
E10 – Invalid command
DB9 Pin Locations
Female
E13 – Invalid value (the number is out of range).
Pin RS-232 fu n ct io n De scrip t io n
Tim e -o u t
1
2
3
4
5
6
7
8
9
–
Tx
Rx
–
Gnd
–
–
–
–
Not used
Transmit data
Receive data
Not used
Signal ground
Not used
Not used
Not used
Not used
A delay of 10 or more seconds between command sequence
characters causes a time-out. The command operation is
stopped, and there is no indication that a time-out occurred.
Usin g t h e co m m a n d /re sp o n se t a b le
The command/ response table on the next page lists valid
command ASCII codes, the VSC 75’s responses to the host,
a description of the command’s function or the results of
executing the command, and an example of each command.
Lower case characters are acceptable in the command field
only where indicated.
RS-232 Pro g ra m m e r’s Gu id e
SIS commands consist of one or more characters per field.
The ASCII to HEX conversion table below is for use with
the command/ response table.
No special characters are required to begin or end a
command sequence. When the VSC 75 determines that a
command is valid, it executes the command and sends a
response to the host device. All responses from the scan
converter to the host end with a carriage return and a line
ASCII to HEX Conversion Table
•
feed (CR/ LF =
), which signals the end of the response
character string. A string is one or more characters.
VSC-in it ia t e d m e ssa g e s
When a local event such as a front panel selection or
adjustment takes place, the VSC 75 responds by sending a
message to the host. No response is required from the host.
The VSC-initiated messages are listed here (underlined).
(C) COPYRIGHT 2000, EXTRON ELECTRONICS VSC 75,
Vx.xx
The VSC 75 displays the copyright message when it first
powers on. Vx.xx is the firmware version number.
RECONFIG
The VSC 75 sends the Reconfig message
when the input source is changed and when changes have
been made to one or more of the settings.
VSC 75 Serial Communication
3-2
VSC 75 Serial Communication
3-3
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Sym b o l d e fin it io n s
= CR/ LF (carriage return/ line feed)
X1 = Vertical filtering
level (1 through 2)
= CR (carriage return only)
•
= Space
X2 = 1 = On, 0 = Off
Co m m a n d /re sp o n se t a b le
Co m m a n d d e scrip t io n
Co m m a n d
ASCII He x
Re sp o n se
t o h o st
Ad d it io n a l
d e scrip t io n
Ho rizo n t a l sh ift
Shift right one step
Shift left one step
{ H
} H
7B + 48
7D + 48
Hph +
Hph -
Increment up
Increment down
Ve rt ica l sh ift
Shift down one step
Shift up one step
{ /
} /
7B + 2F
7D + 2F
Vph +
Vph -
Increment up
Increment down
Ho rizo n t a l size
Increase horizontal size by one step
Decrease horizontal size by one step
{ :
} :
7B + 3A
7D + 3A
Hsz +
Hsz -
Increment up
Increment down
Ve rt ica l size
Increase vertical size by one step
Decrease vertical size by one step
{ ;
} ;
7B + 3B
7D + 3B
Vsz +
Vsz -
Increment up
Increment down
Flicke r/ve rt ica l filt e r (d e t a il)
Select flicker/ vertical filter
Select next higher flicker/ vertical filter (Dhz + 1)
Select next lower flicker/ vertical filter (Dhz - 1)
(Dvt)
d
{ d
} d
+ 64
7B + 64
7D + 64
Dvt
Specific value
Increment up
Increment down
X1
X1
X1
X1
Dvt
X1
Dvt
X1
Fre e ze
Set Freeze mode to On (freeze the displayed image)
Set Freeze mode to Off (release the displayed image)
F
f
46
66
Frz 1
Frz 0
Enable freeze
Disable freeze
Exe cu t ive m o d e
Set Executive mode to On
Set Executive mode to Off
X
x
58
78
Exe 1
Exe 0
Enable executive
Disable executive
Te st m o d e
Set Test mode to On
Set Test mode to Off
J
j
4A
6A
Dmo 1
Dmo 0
Enable test
Disable test
Firm w a re ve rsio n , p a rt n u m b e r & in fo rm a t io n re q u e st s, a n d re se t
System reset
Query firmware version number
Request part number
Esc z
Q/ q
N/ n
I/ i
1B 7A 0D
51/ 71
4E/ 6E
49/ 69
Zap
Ver x.xx
N60-321-01
(see below)
Reset to factory default
Display firmware version
Display VSC 75’s part #
Display status
Request information
Command =
X1
X2
X2
X2
Response =
Dvt
• Frz
• Exe
• Dmo
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Re m o t e Co n t ro l, co n t ’d
Co n t ro l So ft w a re fo r Win d o w s
The included graphical control software for Windows offers
another way to control the VSC 75 via RS-232 connection in
addition to the Simple Instruction Set commands listed on
pages 3-4 to 3-5. The control software is compatible with
Windows 3.1/ 3.11, Windows 95/ 98 and Windows NT. The
VSC 75 uses version 3.2 or higher of Extron’s VSC and DDS
Control Program, which is included with the VSC 75.
In st a llin g t h e so ft w a re
The control program is contained on a single 3.5-inch
diskette, and it can run from the floppy drive. However, it
is more convenient to run the program from the hard drive.
To install the software on the hard drive, run SETUP.EXE
from the floppy disk, and follow the instructions that
appear on the screen. The program requires approximately
1 MB (megabyte) of hard disk space.
Fig u re 8 — VSC a n d DDS Co n t ro l Pro g ra m
w in d o w
By default, the installation creates a C:\ VSC200 directory,
and it places two icons (VSC + DDS Control Pgm and
VSC + DDS Help) into a group or folder named “Extron
Electronics”.
Usin g t h e so ft w a re
1.
To run the VSC and DDS Control Program, double-
click on the VSC + DDS Control Pgm icon in
the Extron Electronics group or folder. The
Comm menu appears on the screen.
2.
Click on the comm port that is connected to the
VSC 75’s RS-232 port. The Extron VSC and DDS
Control Program window appears. It displays the
current settings. See figure 8 on the next page.
For information on program features, press the F1
computer key or click on the Help menu from
within the control program, or double-click
on the VSC + DDS Help icon in the Extron
Electronics group or folder.
VSC 75 Serial Communication
3-6
VSC 75 Serial Communication
3-7
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Re m o t e Co n t ro l, co n t ’d
VSC 75
Appendix
A
Sp e cifica t io n s
Pa rt Nu m b e rs a n d Acce sso rie s
Specifications
Included Parts
Accessories
VSC 75 Serial Communication
3-8
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Sp e cifica t io n s
Vid e o in p u t
Co n t ro l/re m o t e — sca n co n ve rt e r
Number/ signal type ................... 1 VGA, 1 Mac analog RGBHV, RGBS,
RGsB
Serial control port ........................ RS-232, 9-pin female D connector
Baud rate and protocol ............... 9600, 8-bit, 1 stop bit, no parity
Serial control pin configurations ... 2 = TX, 3 = RX, 5 = GND
Connectors .................................... VGA ........................... 15-pin HD female
Mac ............................ 15-pin D female
Program control .......................... Extron’s control program for Windows®
Extron’s Simple Instruction Set™ – SIS™
Nominal level(s) .......................... Analog — 1V p-p
Minimum/ maximum level(s).... Analog — 0V to 2V p-p with no offset
Impedance .................................... 75 ohms or high Z (DIP switch selectable)
Horizontal frequency .................. Autoscan 24 kHz to 70 kHz
Vertical frequency ....................... Autoscan 50 Hz to 120 Hz
Ge n e ra l
Power ............................................. 100VAC to 240VAC, 50/ 60 Hz, 40 watts,
internal, auto-switchable
Temperature/ humidity .............. Storage -40° to +158°F (-40° to +70°C) /
10% to 90%, non-condensing
Resolution range .......................... Autoscan 560 x 384 to 1280 x 1024
Note: 1280 x 1024 is available at 60 Hz
only
Operating +32° to +122°F (0° to +50°C) /
10% to 90%, non-condensing
Rack mount ................................... Yes, with optional rack shelf,
part number 60-190-01
Vid e o p ro ce ssin g
Encoder ......................................... 10 bit digital
Digital sampling .......................... 24 bit, 8 bits per color; 50 MHz standard
Colors ............................................ 16.8 million
Horizontal filtering ...................... 1 level
Enclosure type .............................. Metal
Enclosure dimensions ................. 1.75" H x 8.75" W x 9.50" D
4.45 cm H x 22.23 cm W x 24.13 cm D
Shipping weight ........................... 5 lbs (2.3 kg)
Vertical filtering ........................... 2 levels (selectable)
Vibration ....................................... NSTA 1A in carton (National Safe Transit
Association)
Vid e o o u t p u t
Approvals ..................................... UL, CE, FCC Class A
MTBF ............................................. 30,000 hours
Number/ signal type ................... 1 S-video .................... NTSC 15.75 kHz,
525/ 625 lines, or PAL, 15.5 kHz, 625 lines
Warranty ....................................... 2 years parts and labor
1 composite video — NTSC 15.75 kHz,
525 lines, or PAL 15.5 kHz, 625 lines
Specifications are subject to change without notice.
Connectors ................................... S-video ....................... 1 4-pin mini-DIN
female
Composite video ..... 1 BNC female
Nominal level ............................... 1V p-p
Impedance .................................... 75 ohms
Syn c
Input type ..................................... Autodetect RGBHV, RGBS, RGsB
Standards ...................................... NTSC 3.58, PAL
Input level ..................................... 1.5V to 5V p-p
Input impedance .......................... 75 ohms
VSC 75 Specifications
A-2
VSC 75 Specifications
A-3
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Acce sso rie s a n d Pa rt Nu m b e rs
In clu d e d Pa rt s
These items are included in each order for a VSC 75:
In clu d e d p a rt s
Pa rt n u m b e r
VSC 75
60-321-01
26-462-01
26-316-02
68-483-01
Mac-HV/ VGA cable (6 feet)
S-video cable (6 feet)
VSC 75 user’s manual
VSC/ DDS control software for Windows
version 3.1 or higher
29-038-01
Acce sso rie s
Acce sso rie s
Pa rt n u m b e r
1U rack shelf
60-190-01
VSC 75 Accessories and Part Numbers
A-4
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