Shure UA830 manual Adjusting For Different Cable Lengths

ADJUSTING FOR DIFFERENT CABLE LENGTHS

+3 dB +10 dB

ADJUSTING FOR DIFFERENT CABLE LENGTHS

FIGURE 4

The longer the coaxial cable connecting the UA830 unit and the receiver or distribution amplifier, the greater the possibility for signal loss. The UA830 comes with a GAIN switch that can compensate for signal loss in longer cables. Shure recommends using the Shure UA825 or UA850 or UA8100 coaxial cable when remote mounting antennas. NOTE: Use only 50Ω low-loss cables (RG-8 or equivalent).

Set the switch according to these guidelines:

•UA825 Extension Cable (7.6 m [25 ft])-Set GAIN switch in 3 dB position.

•UA850 Extension Cable (15.2 m [50 ft])-Set GAIN switch in 10 dB position.

•UA8100 Extension Cable (30.4 m [100 ft])-Set GAIN switch in 10 dB position.

•If over 15.2 m (50 ft) is required, a maximum of two UA830's (Shure model UR4 and UA845 only) may be chained together. See Figure 5. The Gain switches for each UA830 must be adjusted separately. No more than two may be chained.

TO ANTENNA

INPUT

TO

ANTENNA

TOTO

ANTENNA RECEIVER

TO

RECEIVER

*SEE NOTE ON CABLES

CHAINING TWO UA830’s

FIGURE 5

*To maintain Shure UA825 and UA850 or UA8100 cables in top condition in permanent installations:

•Avoid sharp bends or kinks in the cables.

•Do not deform cables with makeshift clamps, such as bending a nail over the cable.

•Do not use cables in permanent outdoor installations

•Do not expose cables to extreme moisture

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