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Gain adjustment control
The gain control adjusts picture brightness by compensating
for signal amplitude loss caused by cable resistance. To adjust
the output gain, view the display while using a small, flat-blade
screwdriver to rotate the potentiometer. This control produces
a gain adjustment ranging from -1 dB to + 3 dB (video and luma
of S-video) and from 0 dB to +10 dB (chroma of S-video). Select
the setting that gives the best picture brightness.
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You can judge the adjustment visually by viewing the display.
For a more precise setting use an oscilloscope or a waveform
monitor connected to the far end of the output cable, and adjust
the gain so that the level at the waveform monitor is 100 IRE.
Equalization (EQ) adjustment control
The equalization control adjusts the output level and peaking
to get a sharp picture. This adjustment changes the level and
peaking of the output signal to compensate for capacitance
caused by up to 1000 feet (300 meters) of Extron MHR cable.
This control produces an equalization adjustment ranging from
0 dB to + 7 dB (video and luma of S-video).
The two power cord wires must be kept separate while
the power supply is plugged in. Remove the power
before wiring.
Do not tin the power supply leads before installing in the
direct insertion connector. Tinned wires are not as secure
in the connectors and could be pulled out.
The gain control is a potentiometer with a mechanical stop
at the high and the low end. After you have reached the
high or low end of the adjustment, no change is apparent
on the display. The default is unity (the dot position)
CSVEQ 100 D • Operation
3-7
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