Burst Electronics MicroDA - Manual (Page 4)

Two Output Model VDA-2EQ
The Model VDA-2EQ has the ability to equalize
video over RG-
59 cable lengths
up to 1000 feet
(300 meters).
To Adjust:
The Model VDA-
2EQ has three
adjustments:
Gain, EQ, and
Rise Time. To
equalize for long
cable lengths, input either SMPTE Bars or
Multiburst. Use a Waveform Monitor and
Vectorscope, at the end of your cable, to view the
video signal while these adjustments are made.
•
Adjust Gain to 1 volt (-40 IRE sync tip to 100
IRE White).
•
Adjust EQ for correct vector lengths (or flat
waveform if using multi-burst).
•
Adjust Rise Time (here SMPTE Color Bars
work best) for no overshoot when going from
setup to 100 IRE white (no chroma).
•
Go back and tweak all three adjustments until
you have an undistorted video signal.
Video Distribution Amplifiers 3