8
VIDEO SPLITTERS
VIDEO SPLITTERS
4.1 Operation
The operation of the Video Splitter
unit is relatively simple. All connected
output devices (Monitors, Recorders,
etc.) will see the same signal as the
input source. No selection of outputs
is possible.
A
UTOMATIC AND
A
DJUSTABLE
G
AIN
When the front-panel Automatic
Gain Control (AGC) switch is set
to ON, turn the adjustable gain
counterclockwise to the left until
it clicks into place by the CAL
indicator. The Video splitter will
provide unity gain to each output.
This will be confirmed by the front-
panel LED being green.
When the AGC switch is set to the
OFF position, gain is manually
controlled by the adjustable front-
panel knob. The front-panel LED
will turn red. The output gain can
be adjusted from -6dB to +6dB. The
front-panel LED changes from red
to green to indicate unity gain.
DC R
ESTORE
/C
LAMP
The DC restore/clamp switch is
located on the back-panel of your
Video Splitter. Set this switch in
the position which yields the
best picture.
For most applications, the switch will
be set in the “BLACK” position (up).
In this position, the output video is
clamped at 0 VDC (see Figure 4).
With the switch in the “SYNC TIP”
position (down), the sync signal
is raised above ground (0 VDC)
(see Figure 5). On some monitors
this will result in a brighter picture.
4. Operation, Troubleshooting
and Maintenance
0 VDC
SYNC
VIDEO
Figure 4. Video output clamped at 0 VDC.
