AudioControl BVR-25 Руководство по установке и эксплуатации - Страница 11

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Adjusting the Controls

Properly setting the controls

on your BVR-25 will always

give you the maximum per-

formance. Although the unit

does come "pre-set" from the

factory with many of the inter-

nal enhancements at optimum

levels, we have no way of

knowing the exact length of

cable that you will be using.

Therefore, we have provided

a few simple controls to assist

you in the optimization of the

system:

Gain: Simply, this control

on the BVR-25 adjusts the

output level or gain on all

four of the RCA connections. To help with this adjustment

process we have also provided a Calibration Indicator LED

that triggers when there is a peak "white" signal level of

1 volt. Typically GAIN calibration can be made by turn-

ing on the processor's OSD function which will most often

display either white on a black background or vice versa.

An ideal signal for calibration is a ﬁxed image that is 50%

white and 50% black such as a "needle" or "checkerboard"

pattern on that comes with many video test generators. Ad-

justing the gain control will raise or lower the white levels.

The Calibration LED illuminates when the white signal

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ground which minimizes the ground loops that can appear

in a coax wired system. However it is recommended that

you always make sure the structure you are in is wired to

the National Electrical Code. The NEC standards require

all ground wires to run back to the main panel prior to ter-

mination. We now return you to your regularly scheduled

manual text...

Signal Wiring

The BVR-25 operates using standard unshielded twisted-

pair (UTP) Category 5 (or better) wiring. Good wiring

practices will minimize the chance of noise pickup.

Make certain that you do not run any 110-240 volt power

wiring near or parallel to the CAT-5 signal cables as they

could radiate noise into the signal wires. You may pick up

AC hum. Tests have shown however that you will not pick

up songs from the group AC/DC. The

BVR-25 uses 12 VDC power, which

will not radiate into the signal wires.

If you need to cross over a power

wire, try to do it at right angles. Keep

the signal wiring as far as possible

from any noise sources such as light-

ing power supplies ﬂuorescent lights,

dimmers, actuators, motors, and small

children.

RJ-45 connector with wires

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