Hall Research UVA-WP - Manual (Page 12)

Model UVA-WP
10
There is a potentiometer (pot) or pushbuttons on the Model URA
receiver depending on the products revision. Turning the pot CW
increases the compensation. Use a small screwdriver and starting
from fully CCW; slowly turn the pot CW until the image is perfectly
clear. Fully CCW corresponds to no compensation (recommended for
lengths of 100 ft or less), and fully CW corresponds to 1000 feet.
Newer models use pushbuttons to adjust the compensation, follow the
directions supplied with that model. Be careful not to over-
compensate the video image.
The video quality at the remote station depends on:
(1) The length of the CAT5 cable
(2) The video resolution setting
(3) The video refresh rate setting
In general, at low and mid resolutions, excellent image reproduction is
provided at up to 1000 feet. At high resolution and refresh rates
perfect image reproduction can be achieved at shorter distances (see
table 2.1 below). Using longer cables or higher resolution rates will
still produce an image, but the reproduction quality will be reduced.
Refresh Rate
60 Hz 75 Hz 85 Hz
800x600 1000 ft 1000 ft 1000 ft
1024x768 1000 ft 800 ft 750 ft
1280x1024 750 ft 650 ft 600 ft
Resolution
1600x1200 750 ft 600 ft 500 ft
1920x1440 750 ft 750 ft 500 ft
Table 2.1
Maximum Recommended Cable Lengths