HomeTech BVR-20 - Manual (Page 10)

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Adjusting the Controls
Properly setting the controls on your BVD-20, BVH-20
and BVR-20 will give you the maximum performance.
Although they do come “pre-set” from the factory with
many of the internal enhancements at optimum levels, we
have no way of knowing the exact length of cabling that
you will be using. Therefore we have provided a few
simple controls for you to assist in the optimization of your
system:
Cable Compensation: The Cable Compensation
control on the BVD-20 and BVH-20 equalizes the video
signal to counteract the effect of wire capacitance. As the
run length of a Cat-5 cable is increased, the additional cable
capacitance causes a loss of picture quality. The Active-
Balanced circuitry in the BVD-20 / BVH-20 provides the
means for correcting this with the Cable Compensation
control. Note that this control is labeled in distance. Esti-
mate approximately how long the cable run is from the
BVD-20 / BVH-20 to the BVR-20 (no need to be precise
here) and adjust the Cable Compensation control for that
distance. It is useful to have a video test signal or a televi-
sion picture with strong vertical lines to make the final
adjustments. Set the Cable Compensation control for
minimum smearing along the vertical lines.
Audio/Video Output: Simply, this control on the BVR-
20 adjusts the output level or gain on all four of the RCA
connections. This level control helps make up for any
“wire resistance” signal losses that may occur due to the
length of the Cat 5 wiring.