Clear-com SB-704 User Manual download pdf (Page 23)

SB-704 MAIN STATION

2-5

Portable Installation Cable

Practical cable for portable system interconnections is flexible,

two-conductor, shielded microphone cable. We suggest you use Belden

#1800F (24 gauge). For runs longer than 500 ft. (152.5 m) use a 20 gauge

cable or larger (Belden #8412).

Permanent Installation Cable

Vinyl-jacketed shielded pair is the cable of choice for permanent installations.

Use a low-capacitance 20 gauge wire for runs under 500 ft. (152.5 m). We

suggest you use Belden #8762. For runs longer than 500 ft. (152.5 m) use an

18 gauge cable (Belden #8760). Placing the cable in conduit is recommended

but not necessary.

Multi-pair cable that is individually shielded is acceptable for use in

multi-channel systems. For cross-talk considerations, the shields must be tied

together on both ends of the cable to produce the lowest possible DC path for

ground return.

WIRING DIAGRAM

The diagram shows using a multi-pair cable to connect two stations. Note that

the power and shield wires of each channel are not connected together.

GROUND ISOLATION

The pin #1 ground connection of each XLR connector must also be isolated

from the chassis. Pin #1 should not be connected to the shell of the XLR

connector.

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Clear-com SB-704 User Manual Page 23