Marshall Electronics
V-R81PA
Users Guide
Broadcast Multimedia Division
The V-R81PA is a rack mountable unit that has a 7.9” active matrix LCD panel with auto NTSC/PAL recognition and4
separate channels of audio built-in. The video portion has 2 composite video inputs and an S-Video input, each with loop
through capability. The four channels of audio are inputted via the 4 balanced XLR inputs and have a passive loop through
for each channel. Simultaneous visual monitoring of the 4 audio channels is obtained using the LED bargraphs on the
face of the unit. Each speaker can have any of the four audio channels and are indicated by a highly visible LED number
readout. Controls for color, tint, contrast, and brightness are provided via an on-screen menu.
The operation of the V-R81P is fairly straightforward, however, it is important to take note of the following:
1. The V-R81PA has been designed to
fi
t in a 4U space on your rack. It may be necessary to center the unit up or down in
order to not touch any adjacent units in your rack when tilting unit up or down.
2. The LCD Panel comes with a protective plastic
fi
lm that must be removed by carefully lifting the
fi
lm from the corner
and peeling it off. Be certain not to apply any pressure on the LCD panel, it is fragile and can break. Scratched, cracked or
broken LCD screens are not covered by our warranty.
3. The V-R81PA uses 12VDC, 3.0amp regulated power. Be certain that these speci
fi
cations are met when using a power
supply other than the one supplied to you by Marshall Electronics.
4. The V-R81PA is equipped with a bayonet locking mechanism on the power connector. Each mating end has a particular
shape that need to slip into the other and then lock in place by turning the outer sleeve.
5. The Video inputs on the rear of the panel are 75 Ohm self-terminated. The loop through feature uses active compo-
nents and is always active as long as power is supplied to the unit regardless of the monitor being ON or OFF.
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