Instruction manual

RM-702 TWO-CHANNEL REMOTE STATION
2-4
Portable Installation Cable: Practical cable for portable system interconnections
is flexible, two-conductor, shielded microphone cable. For runs less than 500 ft.
(152.5 m), a cable made of 24-gauge wire is acceptable. For runs longer than
500 ft. (152.5 m), use a 20-gauge cable or larger.
Permanent installation Cable: Vinyl-jacketed shielded pair is the cable of choice
for permanent installations. Use a low-capacitance 20-gauge wire for short runs
of less than 500 ft. (152.5 m) and 18-gauge cable for runs greater than 500 ft.
(152.5 m). 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.
DESCRIPTION OF FRONT PANEL CONNECTORS
HEADSET CONNECTOR (FRONT PANEL)
Note: The following is a description of a recommended headset.
Mic Type --- Dynamic, for details see the technical specifications
Wiring
Pin 1 --- Mic common
Pin 2 --- Mic hot
Pin 3 --- Headphone common
Pin 4 --- Headphone hot
PANEL MIC CONNECTOR (FRONT PANEL)
Clear-Com provides two plug-in panel microphones for use on the RM-702.
The GM-9 is 9 in. (22.86 cm) long and GM-18 is 18 in. (45.72 cm) long. The
microphone is of the electret type. The microphone has a built-in 1/4 in.
(0.64 cm) phone jack for a connector. A mating receptacle is mounted on the
RM-702.
To install a GM-9 or GM-18 panel mount microphone, use the following steps:
1. Check the set screw in the mic-mounting flange to make sure it is clear of the
threads in the bushing.
2. Screw the microphone into the bushing hand-tight.
3. Set the set screw on top of the bushing to lock the mic in place.