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Chapter 1 • Introduction to the VSC 100
Extron • User’s Manual • VSC 100
Introduction to the VSC 100 • Chapter 1
VSC 100 • User’s Manual • Extron
• Composite video – This output is always available, in addition to
one of the other output choices. NTSC or PAL is selected by a rear
panel DIP switch.
• S-video – A 4-pin mini-DIN connector provides output for S-video or
Hi-8 style video. This is the highest quality recordable video output
from the VSC 100 to an S-video VCR. The S-video output is
selectable from the front panel.
• RGBS – Use 4 of the BNC output connectors to provide red, green,
blue and composite sync. This RGBS video output is selected
through a front panel toggle switch and a rear panel DIP switch.
• RGBHV – Use 5 BNC output connectors to provide red, green,
blue, and separate horizontal and vertical sync. A front panel switch
selects RGB and a rear panel DIP switch selects “HV Out”.
Specifications
1-2
What is the VSC 100?
The Extron VSC 100 is a high resolution computer to video scan
converter. It can convert computer scan rates up to 1152 x 900
either from a Mac or a VGA (PC) source to NTSC/PAL, S-video
and RGB outputs. The VSC 100 is installed between the computer
and the desired display or output device (LCD or CRT projector,
VCR or compatible video display or recording device).
Features
The VSC 100 is designed for easy installation. The video input
uses a “loop out” design, together with a single VGA-to-Mac
adapter cable. Regardless if the application uses a VGA or a Mac
video source, the VSC 100 allows the local monitor to be used.
Connect the adapter cable one way for Mac and the other way for
VGA. Connector type and gender prevent any mistakes.
Installation procedures are in chapter 2.
Figure 1-1. VSC 100 front and rear panels
The front panel above includes the features listed below. Detailed
panel operation is in chapter 3.
• Freeze mode allows the output device to capture the image.
• Vertical and horizontal centering (V-shift and H-shift) also double as
pan controls when in the Zoom mode. When a maximum or
minimum limit has been reached, the appropriate LED blinks.
• Three view modes are selectable from the front panel, including
Zoom (200%), Overscan and Underscan.
• Nonvolatile memory locations save centering position settings.
• There are two front panel switch selections for horizontal filtering to
minimize the loss of picture detail.
• Vertical filtering has three switch positions to eliminate flicker on the
output image.
Output Formats
Four video formats are available on the VSC 100. Appropriate rear
panel connectors are provided for each type of output.
FREEZE
VGA
MAC
INPUTS
OUTPUTS
ZOOM
OVER
UNDER
CENTERING/PAN
COMPOSITE S-VIDEO R G B H/HV V
VSC 100
100-240V 0.9A
50/60 Hz
SPARE
HV OUT
PAL OUT
75 OHM
FILTERING
HORZ VERT
I
I I
I I I
S-VIDEO
RGB
I
I I
SCAN CONVERTER
MINMAX
SIGNAL
LOCK
1-1
Video input
Number/type............................... 1 VGA, 1 Mac analog RGBHV, RGBS, RGsB
Connectors .................................... VGA ........... 15-pin female HD
Mac ............ 15-pin female D
Minimum/maximum levels ...... Analog ....... 0V to 2V p-p with no offset at
unity gain
Impedance .................................... High Z or 75 ohms (DIP switch-selectable)
Horizontal frequency .................. Autoscan 24 kHz to 70 kHz
Vertical frequency ....................... Autoscan 50 Hz to 120 Hz
Resolution range .......................... Autoscan 560 x 384 to 1280 x 1024
Note: 1280 x 1024 is available at 60 Hz only.
Video processing
Encoder ......................................... 10 bit digital
Digital sampling .......................... 24 bit, 8 bits per color; 40 MHz
Colors ............................................ 16.8 million
Horizontal filtering...................... 2 levels
Vertical filtering ........................... 3 levels selectable per each view mode
Video output
Number/signal type ................... 1 RGBHV/RGBS ...... 15.75 kHz analog, or
1 S-video.................... NTSC, 15.75 kHz,
525 lines , or PAL,
15.5 kHz, 625 lines
1 composite video .... NTSC, 15.75 kHz,
525 lines , or PAL,
15.5 kHz, 625 lines
Connectors .................................... RGBS/RGBHV ......... 4 or 5 female BNC
S-video .................... 1 female 4-pin mini-DIN
NTSC/PAL composite video ... 1 female BNC