User’s Manual
VSC 150
Scan Converter
Extron Electronics, Europe
Extron Electronics, Asia
Extron Electronics Information
68-469-01
Printed in the USA
Extron Electronics, USA
™
Beeldschermweg 6C, 3821 AH Amersfoort 135 Joo Seng Rd. #04-01, PM Industrial Bldg.
+31.33.453.4040 FAX +31.33.453.4050 +65.383.4400 FAX +65.383.4664
1230 South Lewis Street, Anaheim, CA 92805
800.633.9876 714.491.1500 FAX 714.491.1517
USA
™
:
ExtronFAX
714.491.0192
The Netherlands
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24-hour access—worldwide!
© 2001 Extron Electronics. All rights reserved.
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Table of Contents
Chapter 1 • Introduction .......................................................... 1-1
About this Manual ................................................................ 1-2
About the VSC 150 ................................................................ 1-2
Features ...................................................................................... 1-2
Chapter 2 • Installation and Operation......................... 2-1
Installation Overview.......................................................... 2-2
Mounting the VSC 150 ........................................................ 2-2
Tabletop/desktop placement ................................................ 2-2
Rack mounting....................................................................... 2-3
Front Panel Features ............................................................ 2-4
Rear Panel Features.............................................................. 2-7
Cabling ........................................................................................ 2-9
Mac-HV/VGA cable connector pin assignments ................. 2-12
Optimizing the Image ....................................................... 2-12
Setting Up Genlock and
Vertical Interval Switching............................................. 2-13
Vertical interval switching setup ........................................ 2-13
Genlock setup ...................................................................... 2-14
Oscilloscope displays............................................................ 2-16
Troubleshooting ................................................................... 2-17
If the image does not appear .......................................... 2-17
If the image does not display correctly ............................ 2-18
If the scan converter does not respond to controls ......... 2-19
Chapter 3 • Remote Control .................................................. 3-1
RS-232 RemoteControl........................................................ 3-2
Host-to-VSC communications................................................ 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
Control software for Windows ............................................. 3-6
Installing the software....................................................... 3-6
Using the software ............................................................ 3-6
IR Remote Control................................................................. 3-7
Using the memory feature .................................................... 3-8
(Continued)
VSC 150 • Table of Contents
i
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Table of Contents, cont’d
Appendix • Specifications, Accessories and
Part Numbers................................................................................... A-1
VSC 150
Specifications ......................................................................... A-2
Included Parts......................................................................... A-4
Accessories............................................................................... A-4
Chapter One
1
Introduction
About this Manual
About the VSC 150
Features
68-469-01 D
Printed in the USA
01 01
VSC 150 • Table of Contents
ii
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Introduction
Picture centering and panning — Center the picture
horizontally and vertically or pan across the picture
with these front panel rotary controls.
About this Manual
This manual contains information about Extron’s VSC 150
scan converter and how to install, operate and configure it.
It also explains how to operate the IR 601 remote control.
Freeze mode — This feature provides a still image of the
scan-converted picture.
Filtering controls — Horizontal, vertical and encoder
filtering levels are user-selectable from the front
panel or remote controls for control of picture detail
clarity and flicker reduction.
About the VSC 150
Extron’s VSC 150 is a high resolution computer-to-video
scan converter with all digital controls. The VSC 150
converts a computer video signal into two display outputs
– composite video and one of the following:
• S-video,
• component video, or
• RGB video (RGBHV or RGBS)
Memory presets — The VSC 150 offers 30 factory-defined
and 30 user-defined presets for size, zoom, panning,
centering and filtering settings. These settings can
be recalled automatically in association with a
particular input signal scan rate. Three additional
user-defined presets can be stored and retrieved
manually via IR or RS-232 remote control.
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.
Executive mode — To prevent unauthorized or accidental
adjustments to the VSC 150’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 and IR remote
control when executive mode is active.
This scan converter accepts one Macintosh or VGA
computer input of a resolution up to 1152 x 900 and
provides a local monitor loop-out.
The VSC 150 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 buttons, RS-232
remote control, and infrared (IR) control.
Infrared (IR) remote control — All the functions that can
be controlled via front panel controls can be also be
controlled via an IR remote control.
RS-232 control — The VSC 150 can also 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®.
FILTERING
VERT
CENTERING/PAN SIZE
GENLOCK
HORZ
ENCODER
I
I
I
MIN/ BURST HORZ
MAX LOCK PHASE
SUB
PHASE
II
II
II
III
III
FREEZE
SIZE
VSC 150
SCAN CONVERTER
VIDEO
GENLOCK
IN
B/B-Y
Choice of output formats — NTSC/PAL composite video
output is continuously available on a rear panel BNC
connector. In addition, one other output can also be
active. Choose from the following formats via a rear
panel switch and cable connections:
100-240 V
0.3A
R/R-Y
G/Y
O
U
T
P
U
T
I
N
P
U
T
S
MAC
VGA
S-VIDEO
RGB
S-VIDEO
S
H
V
S
OUT
50/60 Hz
R-Y/B-Y/Y
RS-232
VSC 150 front and rear panels
• RGBHV (separate horizontal and vertical sync),
• RGBS (composite sync),
Features
• Y, R-Y, B-Y (component video), or
• S-video output.
Picture sizing/zoom controls — Separate digital rotary
controls on the VSC 150 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.
Genlock (burst lock) synchronization — The VSC 150 can
be connected to a genlock (burst lock/black burst)
sync signal generator via rear panel connectors, and
the phase differences between the genlock sync and
output video sync can be adjusted separately for the
VSC 150 • Introduction
1-2
VSC 150 • Introduction
1-3
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Introduction, cont’d
horizontal and color subcarrier signals. Genlocking
VSC 150
provides for seamless vertical interval switching
between the scan-converted signal and signals from
other video sources.
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 150
to the computer without need for additional
adapters.
Rack mountability — The VSC 150 can be rack mounted
on one side of an optional 1U rack shelf (Extron part
#60-190-01).
Chapter Two
2
Installation and Operation
Installation Overview
Mounting the VSC 150
Front Panel Features
Rear Panel Features
Cabling
Optimizing the Image
Setting Up Genlock and Vertical Interval Switching
Troubleshooting
VSC 150 • Introduction
1-4
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Installation and Operation
Rack mounting
Installation Overview
1.
If feet were installed on the bottom of the VSC 150,
remove them.
To install and set up the VSC 150, follow these basic steps:
Turn all of the equipment off. Make sure that the
source computer, the VSC 150, the output devices
(projector, monitors), genlock device (black burst
generator), and remote control devices are turned off
and disconnected from the power source.
1
2.
Place the VSC 150 on one half of the 1U (one unit high,
one unit wide) rack shelf (part #60-190-01). Align the
front of the VSC 150 with the front of the shelf, and
align the threaded holes on the bottom of the VSC 150
with the holes in the rack shelf.
Mount the scan converter. See “Mounting the
VSC 150” in this chapter.
2
3
4
3.
Attach the VSC 150 to the rack shelf with the two
provided 4-40 x 1/8” machine screws. Insert the
screws from the underside of the shelf, and securely
fasten them into diagonally-opposite corners as
shown in the illustration below.
Set the rear panel toggle and DIP switches. See “Rear
Panel Features” in this chapter for details.
Attach the cables. See “Cabling” and “Rear Panel
Features” in this chapter.
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. See “Troubleshooting” in
this chapter if needed.
Using an oscilloscope, set up and adjust the genlock
signal. See “Setting Up Genlock and Vertical Interval
Switching” in this manual.
7
8
False front panel
uses 2 front holes
Adjust filtering and other settings from the front
panel buttons, or RS-232 or IR remote controller. See
“Front Panel Features” in this chapter for details. See
“Troubleshooting” in this chapter if needed.
H
O
R
F
Z
IL
T
F
E
R
R
E
IN
G
E
I
Z
E
V
E
R
T
II
I
E
N
C
O
D
E
II
II
R
I
C
E
N
I
T
E
R
II
III
IN
G
/P
A
N
S
IZ
E
S
IZ
E
G
E
N
L
M
M
O
C
IN
X
/
K
A
B
U
O
R
C
L
S
T
P
Mounting the VSC 150
H
O
A
K
R
Z
H
S
E
S
U
H
P
B
S
A
(2) 4-40 x 1/8" Screws
E
VSC 150
S
C
A
N
C
O
N
V
E
R
T
E
R
Select tabletop placement or rack mounting. Follow the
appropriate installation instructions on these two pages.
Use 2 mounting holes on
opposite corners
Rack mounting
Tabletop/desktop placement
For tabletop or desktop placement only, install the self-
adhesive rubber feet/pads (provided) onto the four corners
of the bottom of the enclosure.
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.
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.
VSC 150 • Installation and Operation
2-2
VSC 150 • Installation and Operation
2-3
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Installation and Operation, cont’d
Front Panel Features
2 seconds to activate Executive mode. Executive mode
prevents unauthorized or accidental adjustments to the
VSC 150’s settings via front panel controls by locking all
the front panel features except centering controls.
Adjustments can still be made via RS-232 control or
IR remote control when Executive mode is active. To
release Executive mode and allow access to all front panel
functions, press the Freeze and Size buttons simultaneously
again for 2 seconds.
FILTERING
VERT
CENTERING/PAN SIZE
GENLOCK
HORZ
ENCODER
I
I
I
MIN/ BURST HORZ
MAX LOCK PHASE
SUB
II
II
II
III
PHASE
III
FREEZE
SIZE
VSC 150
SCAN CONVERTER
1
2
3
4
5
6
7
8
9
10
11 12
13
14 15 16
17
Freeze indicator LED — This LED lights green to indicate
that the freeze feature is active.
4
5
Adjustments to front panel features and controls do not
affect the local monitor.
Horizontal (Horz) filtering control — Press this button to
choose between the two levels of horizontal filtering to
yield the best picture detail.
Power/signal lock LED — If this indicator...
1
• Lights amber yellow without blinking, the VSC 150 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.
• Blinks green when the signal is within range, the
VSC 150 is receiving commands from the IR 601
remote control.
Horizontal filtering LEDs — These LEDs light yellow to
indicate the selected horizontal filtering level.
6
7
Vertical (Vert) filtering control — Press this button to
choose one of the three levels of vertical filtering. Select
the setting that yields the least amount of flicker.
• Lights green without blinking, the input signal is within
range, and the VSC 150 has locked to that particular
resolution.
Vertical filtering LEDs — These LEDs light yellow to
indicate the selected level of vertical filtering.
8
9
Encoder filtering control — Press this button to choose
one of the three levels of encoder filters. Select the setting
that gives the best picture detail.
IR receiver window — The VSC 150 receives infrared
signals from the IR remote controller through this window.
The IR remote controller must be in the direct line of sight
of this window when it is in use.
2
3
Encoder filtering LEDs — These LEDs light yellow to
indicate the selected level of encoder filtering.
10
11
Freeze control — Press this button to display (or record) a
still image of the scan-converted picture from both display
outputs. (See “Rear Panel Features” and “Cabling” for
information on these outputs.) The freeze LED indicator
lights while this control is active. To turn this feature off,
press the Freeze button again. Freeze affects both outputs
simultaneously. No matter what the format is (RGB,
component, S-video or composite video), the image will be
“frozen”. The image on the local monitor will not be
“frozen”.
Size control — 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 (13).
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 (14) lights red when the
minimum or maximum limit of a control has been reached.
The size feature affects both display outputs
All controls except Freeze will be locked on both the front
panel and the IR remote control while Freeze mode is
active. Press the Freeze button again to turn off Freeze
mode and unlock the other controls.
simultaneously. The image is resized no matter what
format is selected (RGB, component, S-video or composite
video). The 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
+
Executive mode (Freeze + Size) — Press the
11
3
Freeze control together with the Size button for
(Continued on the next page)
VSC 150 • Installation and Operation
2-4
VSC 150 • Installation and Operation
2-5
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Installation and Operation, cont’d
default to the standard centering and pan functions. To
turn the size feature off, press the Size button again.
Rear Panel Features
VIDEO
GENLOCK
IN
B/B-Y
100-240 V
0.3A
See Freeze control (3) for information on using Executive
mode.
R/R-Y
G/Y
O
U
T
P
U
T
I
N
P
U
T
S
MAC
S-VIDEO
RGB
S-VIDEO
Size control LED — This LED lights green to indicate that
the size feature is active.
12
13
S
H
V
S
OUT
50/60 Hz
R-Y/B-Y/Y
VGA
RS-232
1
2
3
4
5
6
7
8
9
10
Vertical ( ) and horizontal ( ) Centering/Pan/Size
rotary controls — Turn these knobs to adjust vertical or
horizontal centering (when the image size does not exceed
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 mode is active.
AC power input connector — Connect a standard IEC AC
power cord here for power input (100VAC to 240VAC,
50/60 Hz).
1
2
Min/Max LED — This lights red when the minimum or
maximum limit of a control (13) has been reached.
VGA computer input/Macintosh local monitor output
connector — Connect a VGA-type computer to the
VSC 150 via this 15-pin D connector (and the provided
Mac-VGA cable) to use a VGA-type computer as the video
signal source.
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.
14
15
Burst Lock (genlock) LED — This lights green to indicate
that the VSC 150 is receiving a genlock (black burst) sync
signal via the rear panel genlock input connector. Genlock
is a sync timing reference signal used to synchronize an
entire system’s components. If this LED does not light
when genlock is active, then either further phase
adjustment is needed, or a different, more stable or time-
base-corrected sync signal must be used for the genlock
source.
Macintosh (Mac) input/VGA local monitor output
connector — Connect a Macintosh computer to the
VSC 150 via this 15-pin HD connector (and the provided
Mac-VGA cable) to use a Mac as the video signal source.
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.
3
4
Horizontal phase (Horz Phase) control — During genlock
setup use a small screwdriver to rotate this control to align
the horizontal phase of the composite video sync signal
with that of the genlock signal. See “Setting Up Genlock
and Vertical Interval Switching” in this chapter for details.
16
17
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).
Subcarrier phase (Sub Phase) control — During genlock
setup use a small screwdriver to rotate this control to align
the color subcarrier phase of the composite video sync
signal with that of the genlock signal. See “Setting Up
Genlock and Vertical Interval Switching” in this chapter for
details.
1 — PAL Out — Select the output standard with this
switch. This switch affects both of the display outputs
(composite video and one other), but not the local
monitor.
ON — The output is in PAL (Phase Alternate Line)
format (625 lines/frame at 50 Hz vertical,
15.625 kHz horizontal).
OFF — The output is in NTSC (National Television
Standards Committee) format
(525 lines/frame at 60 Hz vertical, 15.734 kHz
horizontal).
(Continued)
VSC 150 • Installation and Operation
2-6
VSC 150 • Installation and Operation
2-7
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Installation and Operation, cont’d
2 — 75 Ohm (video input termination) — This switch
switching between sources. See “Cabling” and
“Setting Up Genlock and Vertical Interval Switching”
in this chapter.
provides a way to prevent blooming when no local
monitor or termination adapter is connected.
ON — The VSC 150 provides 75 ohm video input
termination. Select this setting when a
local monitor is not used.
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, “Remote Control” for details.
10
OFF — The VSC 150 provides high Z (high
impedance) video input termination. Use
this setting when the system includes a
local monitor.
Cabling
Attach cables to the scan converter as detailed in the steps
below. A diagram on page 2-11 shows how the system
looks when cabling is finished.
Composite video (Video) output connector —
Composite video output is continuously available on
this BNC connector.
5
1.
Connect the local monitor via its video input cable to
the corresponding (Mac or VGA) “input” connector
on the VSC 150’s rear panel.
S-video output connector — This 4-pin mini-DIN
connector is for S-video output.
6
7
Output selection switch — In addition to the
2.
Using the included Mac-VGA cable, connect the
computer’s video output to the other input connector.
See the diagram below and the pin assignment
information on page 2-12.
composite video output, one other output can
also be active. Choose from the following
formats via the output selection switch:
S-VIDEO
RGB
R-Y/B-Y/Y
• S-video output (select S-video),
•
If the source computer is a Macintosh, plug the
VGA (15-pin HD) end into the VSC 150, and plug
the other (15-pin D) end into the computer’s
output connector.
• RGBS (composite sync) output (select RGB),
• RGBHV (separate horizontal and vertical sync)
(select RGB), or
• Y, R-Y, B-Y (component video) output
(select R-Y/B-Y/Y).
•
If the source computer is a VGA-type PC, plug
the Mac (15-pin D) end into the VSC 150, and
plug the other (15-pin HD) end into the
computer’s output connector.
The output cables must also be connected to the
appropriate connector(s) for the second output.
100-240
V
0.3A
100-240
V
0.3A
I
I
Connect cables for only one output in addition to
the composite video output. Do not connect
cables to outputs that will not be used for your
application. Connecting cables to more outputs
will overload the circuits and yield weak signals.
N
P
U
T
S
N
P
U
T
S
MAC
VGA
MAC
VGA
50/60 Hz
50/60 Hz
Mac-VGA
cable
Mac-VGA
cable
RGB/component video output connectors — These
BNC female connectors are for RGB output (red, green,
and blue video output; and horizontal, vertical, and
composite sync output), or for component video output
(R-Y, Y, B-Y). See “Cabling” in this chapter for details.
8
9
PC Computer
Mac Computer
Mac-VGA cable local monitor connections
Genlock connectors — A genlock (black burst
generator) device can be connected to the VSC 150 via
these female BNC connectors to synchronize it with
other system components for seamless vertical interval
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.
VSC 150 • Installation and Operation
2-8
VSC 150 • Installation and Operation
2-9
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Installation and Operation, cont’d
3.
4.
5.
6.
Set the PAL Out (NTSC/PAL output) DIP switch. Use
“Rear Panel Features” in this chapter as a guide.
configuration, the last device must provide genlock
termination. See “Setting Up Genlock and Vertical
Interval Switching” in this chapter.
Connect the composite video display or recording
device to the composite video output BNC connector.
OUT
Select the format of the second output by setting the
output selection toggle switch.
Timing Source
GENLOCK
IN
GENLOCK
IN
IN
Connect a cable from the input of the second video
display/recording device (projector, monitor, VCR) to
the appropriate VSC 150 rear panel output connectors.
To Next Device
or Terminate
OUT
OUT
RS-232
RS-232
VSC 150
Rear Panel
VSC 150
or Other Device
For S-video, connect the cable to the 4-pin mini-DIN
connector.
Connecting genlock cables in a daisy chain
For RGBHV (separate H and V sync) output, connect
coaxial cables to the BNC connectors labeled
R/R-Y, G/Y, B/B-Y, H and V, as shown below.
8.
If RS-232 control will be used, connect the RS-232
remote controller or computer to the RS-232 connector.
For RGBS (composite sync), connect the coax cables
to the R/R-Y, G/Y, B/B-Y, and S connectors, as
shown below.
9.
Connect power cords and turn on all the equipment.
The system is now ready for operation.
For component video, connect the coax cables to the
The illustration below shows typical system installation
and cable connections.
R/R-Y, G/Y, B/B-Y connectors as shown below.
R/R-Y
G/Y
B/B-Y
R/R-Y
G/Y
B/B-Y
R/R-Y
G/Y
B/B-Y
i
C
a
r
o
l
H
i
C
a
r
ol
H
Infrared System
RS-232 Control
H
V
S
H
V
S
H
V
S
Remote
External Genlock
Timing
RGBHV
output
RGBS
output
Component video
output
Outputs
Video output BNC cable connections
IN
GENLOCK
Terminator
B/B-Y
Projector (RGBHV)
G/Y
S-232
Connect cables for only one output in addition
R/R-Y
or
VIDEO
S-VIDEO
RGB
O
U
T
P
U
T
to the composite video output. Do not connect
cables to outputs that will not be used for your
application. Connecting cables to more
outputs will overload the circuits and yield
weak signals.
I
S-VIDEO
P
U
T
R-Y/B-Y/Y
A
75OHM
S
S
MA
0.3A
0
V
0-24
10
VG
z
0/60
H
5
Video Editor
(Component)
VSC 150
Video Outputs
Composite
Video
7.
Connect the coax cable from the genlock device (or the
genlock output of another device that shares the
genlock signal) to the Genlock In BNC connector. If
no genlock device will be used, do not attach cables to
these connectors.
Videoconferencing
System
S-video
VCR
NOTE:
Only one S-video or component
video or RGB device may be
connected in addition to the
composite video device and
local monotor.
If another device in the system will use genlock,
connect the device to the Genlock Out BNC connector
of the VSC 150 as shown in the illustration on the next
page. Otherwise, attach a termination adapter to the
Genlock Out connector. If the genlock signal is
connected to several devices in a daisy chain
or
VGA Input
Mac Input
A typical VSC 150 system application
VSC 150 • Installation and Operation
2-10
VSC 150 • Installation and Operation
2-11
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Installation and Operation, cont’d
posite video and one other), but not the local monitor.
Mac-HV/VGA cable connector pin assignments
ON — The output is in PAL format.
OFF — The output is in NTSC format.
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 150.
Size the image to fill the screen
6
1
5
10
1
8
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.
9
15
11
15
D15 Pin Locations
Male
HD15 Pin Locations
Male
VGA (15-pin HD) and Mac (15-pin D) connector
pin locations
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.
The table below lists signals and their pin assignments for
both the VGA (15-pin HD) and Mac (15-pin D) connectors
of this cable.
3.
4.
Press the Size button again to turn the size feature off.
VGA Pin
Function
Mac Pin
Center the picture by rotating the vertical and
horizontal 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.
Select the filtering levels
4
5
6
7
8
9
ID bit
ID bit
Red ground
Green ground
Blue ground
Not used
4
8
1
6
13
—
1.
Press the horizontal, vertical and encoder filtering
controls to select the filtering levels that give the best
picture sharpness and the least amount of flickering.
The LEDs next to each control will light to indicate the
selected level of filtering.
10
11
12
13
14
15
Composite & vertical sync gnd 11, 14
If the filters are set before the image size is adjusted,
you must set the filters again after adjusting the
image size.
ID bit
ID bit
7
10
Horizontal sync
Vertical sync
ID bit/composite sync
15
12
3
Setting Up Genlock and
Vertical Interval Switching
A genlock (black burst generator) device can be connected
to the VSC 150 to synchronize it with other system compon-
ents for seamless vertical interval switching between sources.
Optimizing the Image
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.
Vertical interval switching setup
For vertical interval switching (to allow clean switching
between signals from several devices during the vertical
blanking period of each signal), a composite sync signal can
be applied at the Genlock In connector, and also passed to
another device via the Genlock Out connector.
Select the output standard
1.
Select the output standard with the PAL Out DIP
switch. This switch affects both display outputs (com-
VSC 150 • Installation and Operation
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Installation and Operation, cont’d
If the genlock connectors are used only for vertical interval
switching, no horizontal or subcarrier phase adjustments
are required, and the Burst Lock LED does not light.
termination adapter to the other “input” connector, or
by setting the 75 Ohm DIP switch to On (75 ohms).
The Burst Lock LED lights green to indicate that the
VSC 150 is receiving an acceptable genlock (black
burst) sync signal via the Genlock In connector.
Genlock setup
Genlock differs from simple vertical interval switching in
that an external device (a black burst generator) generates a
reference sync signal for the system, and every device that
uses that signal has its output signal’s horizontal and
subcarrier phases adjusted to exactly match that of the
generator to allow precise timing and full synchronization.
Genlocked systems produce cleaner switches between
inputs than do those without this type of synchronization.
4.
Connect oscilloscope (“scope”) probe A to the Genlock
Out connector. This will provide the scope’s reference
signal. In order to avoid altering the genlock signal,
use the cabling configuration that will be used in the
installation. Either connect the genlock signal cable
from the scope to the next device in the system to be
timed, or provide 75 ohm termination at the scope’s
genlock output.
An oscilloscope is required for genlock setup, and a vector-
scope is recommended. Waveform monitors of types other
than a vectorscope may give the appearance that timing is
adjusted correctly when it is 180 degrees out of phase,
which will result in incorrect colors or picture artifacts.
5.
6.
Connect scope probe B to the VSC 150’s composite video
output connector. Ensure that the rear panel PAL Out
DIP switch is set for the desired standard (NTSC/PAL).
Using the instructions for the scope you are using, set
the scope to view the signals’ horizontal phases.
Adjust the VSC 150’s Horz Phase control until there is
no (0º) difference between the composite video
output’s horizontal sync phase and the genlock signal’s
horizontal phase. See “Oscillocope displays”.
All equipment in the system must be powered up
and turned on for at least 15 to 20 minutes before
genlock setup adjustments can be made and before
the equipment is used in a genlocked application.
7.
Set the scope to view the subcarrier signals. Adjust
the VSC 150’s Sub Phase control until there is a zero
phase difference between the genlock signal and the
NTSC/PAL output. The Burst Lock LED should light.
To synchronize the VSC 150’s video output with a genlock
signal, follow these steps:
1.
Power up and turn on all the devices that will use the
genlock signal. The devices must be on for at least 15
to 20 minutes before proceeding with any adjustments.
If the Burst Lock LED does not light at this point,
either adjust the horizontal or subcarrier phases
further, or use a different genlock source.
Computer Video
OUT
Signal In
Timing Source
The color subcarrier adjustment range is 90° from
0° for a total adjustment range of 180°.
VIDEO
GENLOCK
IN
B/B-Y
100-240
V
0.3A
R/R-Y
G/Y
O
U
T
P
U
T
I
N
P
U
T
S
MAC
VGA
S-VIDEO
RGB
S-VIDEO
8.
View the horizontal phases again. If the phase
difference is not zero, repeat steps 6 and 7 until the
settings do not change.
S
H
V
S
OUT
50/60 Hz
R-Y/B-Y/Y
RS-232
To Scope Probe B
To Scope Probe A
and Termination
If the Burst Lock LED does not light at all when
genlock is active and the horizontal and subcarrier
phases have been adjusted to match the genlock
signal, do not continue with this procedure. A
different, more stable or time-base-corrected sync
signal must be used for the genlock timing source.
Cable connections for genlock setup
2.
3.
Connect the active timing source signal to the
Genlock In connector on the rear panel.
Connect the active computer video input signal to the
appropriate input as explained in step 2 of the Cabling
section on page 2-9. Ensure that the input is properly
terminated either by connecting a local monitor or a
9.
Once the settings are stable and the Burst Lock LED
lights, disconnect the oscilloscope, and reconnect the
genlock cables and terminator to the proper devices in
the system.
VSC 150 • Installation and Operation
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Installation and Operation, cont’d
shows black burst only (with no color). The burst vector is
pointing to the left from the center.
10. Check the display(s) for proper colors and for
undesirable artifacts in the image(s). Make
adjustments as necessary. Once the genlock timing
has been adjusted, it should not require readjustment
when changing to a new computer video signal input.
0
10
350
20
340
30
330
40
320
50
310
60
300
290
280
11. If other VSC 150s are part of this genlock daisy chain,
connect the oscilloscope to each device, and repeat
this procedure.
70
80
270
260
90
100
250
240
110
120
Oscilloscope displays
230
130
What you see on the oscilloscope while adjusting the
VSC 150 to match the genlock signal depends on the type of
signal used, the type of oscilloscope, and the procedure the
scope requires. This section shows some examples of
oscilloscope displays.
220
140
210
150
200
160
190
170
180
Vectorscope screen during
horizontal phase adjustment
The figure below shows the genlock input signal (top) and
an out-of-alignment NTSC composite sync output signal
(bottom) displayed on a waveform monitor to check for
alignment. When the phases are aligned, the wave peaks
on the bottom waveform should line up with those in the
reference signal above it.
The figure below shows an example of a view of a
vectorscope during adjustment of the color subcarrier
phase (SC/H). The subcarrier phase should be aligned to 0º
(indicated in the figure by the triangle).
0
10
350
20
340
With this method there is no way to know if the signals are
180º out of phase. A delayed sweep on a time-based scope
would allow a more accurate display of the input and
output signal phase relationships.
30
330
40
320
+40
A1
A2
50
310
60
300
290
280
70
80
A3
B1
270
260
90
100
250
240
110
120
B2
B3
230
130
-40
220
140
210
150
200
160
190
170
180
Vectorscope screen during
color subcarrier phase adjustment
Troubleshooting
The image should appear properly on the screen(s).
Superimposed waveforms
If the image does not appear
A vectorscope is more accurate than a waveform monitor.
The next figure shows an example of a vectorscope display
when the horizontal phase is adjusted to align it with the
burst (genlock) vector. Adjust the Horz Phase control until
the difference between the two vectors is 0º. This example
1.
2.
3.
Ensure that all devices are plugged in.
Make sure that each device is receiving power.
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
VSC 150 • Installation and Operation
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Installation and Operation, cont’d
are set for the formats that match the cable configuration
and the requirements of the display/recording devices.
If the scan converter does not respond to controls
Symptoms
Solutions
4.
5.
6.
Verify that the 75 Ohm video input termination DIP
switch has been set correctly.
The VSC 150 may be set for
Executive mode.
The picture does not move
on screen when the
To test the system setup and output, substitute a video
test generator for the computer input.
horizontal and vertical
centering controls are
rotated, and the filtering
settings do not change
when the filtering controls
are pressed.
Adjustments can be made via
RS-232 control, or...
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).
Executive mode can be turned
off by pressing the Freeze and
Size controls simultaneously for
2 seconds. See page 2-4.
7.
Call Extron’s customer support hotline if needed. Be
prepared to discuss the steps you have taken and the
equipment involved.
Signals from the IR 601 remote
control may not be reaching the
scan converter.
The VSC 150 responds to
adjustments made via the
front panel, but not to
selections from the IR
remote control.
If the image does not display correctly
Change the placement of the
equipment so the signals have a
clear transmission path between
the remote control and the
VSC 150.
Symptoms
Solutions
The picture is
shifted off the
screen edges.
Adjust the centering and sizing controls
(
,
).
Ensure that the baud rate
(9600 baud) and communication
protocol are set correctly. See
page 3-2.
The image is
stable, but it has
ghosting or
There is no response to
commands from the
RS-232 controller.
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.
Disconnect all unused output cables. Do
not connect cables to both the S-video and
RGB/component outputs at the same time.
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 150.
In a genlocked
system,
displayed color
is incorrect.
The color subcarrier phase (Sub Phase)
might require readjustment.
The image still
does not display
correctly.
Call Extron’s customer support hotline.
VSC 150 • Installation and Operation
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Installation and Operation, cont’d
VSC 150
Chapter Three
3
Remote Control
RS-232 Remote Control
IR Remote Control
VSC 150 • Installation and Operation
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Remote Control
The VSC 150 can be remotely controlled via a computer or a
The VSC 150 displays the copyright message when it first
powers on. Vx.xx is the firmware version number.
control panel attached to the rear panel RS-232 connector.
Alternatively, the VSC 150 can be controlled using the IR
601 infrared remote control. This chapter discusses how to
use each of these options to control the scan converter.
RECONFIG
The VSC 150 sends the Reconfig message
when the input source is changed and when changes have
been made to one or more of the settings.
RS-232 Remote Control
VSC error responses
The VSC 150 can be controlled by a host computer or other
control device via an RS-232 connection with a protocol of
9600 baud, 1 stop bit, no parity, and no flow control. The
When the VSC 150 receives a valid SIS command, it
executes the command and sends a response to the host
device. If the VSC 150 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
control device (host) can use either Extron’s
Simple Instruction Set (SIS) or the graphical
control program for Windows.
9
6
DB9 Pin Locations
Female
E10 – Invalid command
E11 – Invalid preset number
The rear panel RS-232 9-pin D connector has the following
pin assignments:
E13 – Invalid value (the number is out of range).
Pin RS-232 function Description
Time-out
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.
Using the command/response table
The command/response table on the next page lists valid
command ASCII codes, the VSC 150’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.
Host-to-VSC communications
SIS commands consist of one or more characters per field.
No special characters are required to begin or end a
command sequence. When the VSC 150 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
feed (CR/LF = ), which signals the end of the response
character string. A string is one or more characters.
The ASCII to HEX conversion table below is for use with
the command/response table.
ASCII to HEX Conversion Table
•
VSC-initiated messages
When a local event such as a front panel selection or
adjustment takes place, the VSC 150 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 1999, EXTRON ELECTRONICS, VSC 150,
Vx.xx
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Remote Control, cont’d
VSC 150 • Remote Control
3-4
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Remote Control, cont’d
Control software for Windows
The included graphical control software for Windows offers
another way to control the VSC 150 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 150 uses version 3.1 or higher of Extron’s VSC and
DDS Control Program, which is included with the VSC 150.
Installing the software
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.
VSC and DDS Control Program window
IR Remote Control
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”.
The IR 601 infrared remote control can perform all the
functions that are available via the front panel controls
except the genlock adjustments.
The IR 601 remote control can freeze
the image, set filtering adjustments,
zoom in and out, resize and shift the
image. The push-buttons for these
functions on the IR 601 work exactly
like those on the VSC 150’s front
panel. To function properly, the line
of sight between the IR controller and
the VSC 150 must be unobstructed.
Using the software
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 150’s RS-232 port. The Extron VSC and DDS
Control Program window appears. It displays the
current settings. See the illustration on the next page.
The Power/signal lock LED
blinks while the VSC 150
receives commands from the
IR 601.
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.
If the VSC 150 is set for
Executive mode,
adjustments can be made
via the IR remote control.
All controls except Freeze
will be locked on the IR 601
while Freeze mode is active.
Press the Freeze button
again to turn off Freeze
mode and unlock the other
controls.
The IR 601 remote
VSC 150 • Remote Control
3-6
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Remote Control, cont’d
Using the memory feature
VSC 150
In addition to performing the basic functions, the IR 601
remote control provides a memory storage and recall
feature. The VSC 150 offers 30 factory-defined presets and
30 user-defined memory presets that store combinations of
size, zoom, panning, centering and filtering settings. These
settings are recalled automatically in association with a
particular input signal scan rate.
The VSC 150 also offers three additional user-defined
presets that can be recalled manually via IR 601 or RS-232
remote control.
The IR 601 has four Memory buttons for storing and
recalling up to three presets. To store and recall
combinations of settings with the IR 601, follow these steps:
1.
Set the sizing/zoom, centering and filtering settings
for the desired computer video source by using the
front panel controls, RS-232 commands, or the IR 601
controls.
Appendix
2.
Press the Store button in the Memory area of the
IR 601 control. The Power/signal lock LED flashes for
4 seconds. During that period, press the button
labeled with the number (1, 2 or 3) corresponding to
the desired memory. The image settings are stored in
a user memory slot corresponding to that number. If
the button is pressed after the LED stops flashing, the
settings are not stored.
A
3.
To recall a setup that has been stored in memory, press
the appropriate numbered Memory button. The
combination of zoom, sizing and filtering level
settings are recalled.
Specifications
Accessories and Part Numbers
The same three user-defined presets can also be saved and
recalled using the RS-232 control. To store and recall these
memory presets via RS-232 control, follow these steps:
Specifications
Included Parts
Accessories
1.
Set the sizing/zoom, centering and filtering settings
for the desired computer video source by using the
front panel controls, RS-232 commands, or the IR 601
controls.
2.
Use the memory commands in the Command/
response table on page 3-5 to save or recall the presets.
VSC 150 • Remote Control
3-8
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Specifications
Video input
Sync
Number/signal type ................... 1 VGA, 1 Mac analog RGBHV, RGBS,
RGsB
Connectors .................................... VGA ........... 15-pin HD female
Mac ............ 15-pin D female
Minimum/maximum level(s).... Analog ....... 0V to 2.0V p-p with no offset
Impedance .................................... 75 ohms or High Z (DIP switch-selectable)
Horizontal frequency .................. Autoscan 24 kHz to 71 kHz
Vertical frequency ....................... Autoscan 50 Hz to 120 Hz
Input type ..................................... Autodetect RGBHV, RGBS, RGsB
Output type .................................. RGBHV, RGBS
Genlock connectors ..................... 2 BNC female
Standards ...................................... NTSC 3.58, PAL
Input level ..................................... 1.5V to 5.0V p-p
Output level.................................. TTL ............. 5.0V p-p
Input impedance .......................... 75 ohms
Output impedance....................... 75 ohms
Resolution range .......................... Autoscan 560 x 384 to 1280 x 1024
Polarity .......................................... Negative
Note: 1280 x 1024 is available at 60 Hz
only.
Control/remote — scan converter
External sync (genlock) ............... 0.3V to 1.0V p-p
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
IR controller module ................... Extron’s IR 601
The color subcarrier adjustment range is 90° from 0° for a total
adjustment range of 180°.
Program control ........................... Extron’s control program for Windows®
Extron’s Simple Instruction Set™ – SIS™
Video processing
Encoder ......................................... 10 bit digital
Digital sampling .......................... 24 bit, 8 bits per color; 50 MHz standard
Colors ............................................ 16.8 million
Horizontal filtering...................... 2 levels (selectable)
Vertical filtering ........................... 3 levels (selectable)
Encoder filtering .......................... 3 levels (selectable)
General
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
Operating +32° to +122°F (0° to +50°C) /
10% to 90%, non-condensing
Video output
Number/signal type ................... 1 RGBHV/RGBS ...... 15.75 kHz analog, or
1 component video, or
Rack mount................................... Yes, with optional rack shelf,
part #60-190-01
1 S-video.... NTSC, 15.75 kHz, 525 lines, or
PAL, 15.5 kHz, 625 lines
1 composite video ....
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
NTSC, 15.75 kHz, 525 lines, or
PAL, 15.5 kHz, 625 lines
(Add 0.5” for front panel knobs and
0.75” for rear panel connectors.)
Connectors .................................... RGBHV/RGBS ......... 6 BNC female
S-video....... 1 4-pin mini-DIN female
Shipping weight........................... 5 lbs (2.3 kg)
Vibration ....................................... ISTA/NSTA 1A in carton
(International Safe Transit Association)
Approvals ..................................... UL, CUL, CE, FCC Class A
MTBF ............................................. 30,000 hours
Warranty ....................................... 2 years parts and labor
Component video (YUV) .......
3 BNC female
(uses the R, G, and B BNCs)
Composite video ...... 1 BNC female
Nominal level ............................... RGBHV/RGBS, component .. 0.7V p-p
S-video, composite video ...... 1.0V p-p
Impedance .................................... 75 ohms
Specifications are subject to change without notice.
VSC 150 • Specifications
A-2
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Accessories and Part Numbers
Included Parts
These items are included in each order for a VSC 150:
Included parts
Part number
VSC 150
60-312-01
26-462-01
26-316-02
26-300-01
Mac-HV/VGA cable (6 feet)
S-video cable (6 feet)
75 ohm BNC termination adapter
IR 601 remote controller
VSC 150 User’s Manual
68-469-01
29-038-01
VSC/DDS control software for Windows
version 3.1 or higher
Accessories
Accessories
Part number
1U rack shelf
60-190-01
VSC 150 • Accessories and Part Numbers
A-4
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Accessories and Part Numbers, cont’d
VSC 150 • Accessories and Part Numbers
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