Remove the plastic plug from the jack, if present, Screw the microphone into the bushing hand tight, Internal adjustments and connections – Clear-Com KB-702GM User Manual
Page 11: Internal adjustments and connections -5, Internal adjustments and connec- tions
K B - 7 0 2 / K B - 7 0 2 G M T W O - C H A N N E L
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headset connector. The following is a description of the characteristics of
a suitable headset:
Mic Type --- Dynamic; see technical specifications for details
Headphone --- Dynamic; see technical specifications for details
The wiring of the headset is to be as follows:
Pin 1 --- Mic common
Pin 2 --- Mic hot
Pin 3 --- Headphone common
Pin 4 --- Headphone hot
The mic and headphone wiring in the headset cord must be individually
shielded. Do not connect pins #1 and #3 together. Headset extension
cords or headset “Y” cables are not recommended because they will
increase crosstalk between channels.
11. Panel Mic Connector (KB-702GM only): Clear-Com recommends the
GM-9 and GM-18 plug-in panel microphones for use with the
KB-702GM. The GM-9 is 9 in. (23.04 cm) long and the GM-18 is 18 in.
(46.08 cm) long. Both are the electret type. The 1/4 in. (0.64 cm)phone
jack on the microphone mates with the panel mic receptacle on the front
panel of the KB-702GM.
To install a GM-9 or GM-18 microphone, use the following steps:
1. Remove the plastic plug from the jack, if present.
2. Check and unscrew the set screw in the mic mounting flange to make
sure it is clear of the threads in the bushing.
3. Screw the microphone into the bushing hand tight.
4. Turn the set screw on top of the mic mounting flange clockwise to
lock the microphone in place.
12. VOX Control (KB-702GM only): When the panel microphone is
selected on the KB-702GM, the VOX control should be adjusted for
proper operation. This control is located to the right of the panel mic
connector. Use a narrow flat blade screwdriver such as a greenie or
tweaker for this adjustment. When the adjustment is correctly set, the
VOX light illuminates amber when speaking into the panel microphone.
Turning the control clockwise makes the KB-702GM more sensitive to
your voice. The VOX feature can be disabled by turning the VOX control
fully counterclockwise.
INTERNAL ADJUSTMENTS AND CONNEC-
TIONS
The controls and connectors found inside the KB-702 are shown in the
following figure and described by the following text. The controls can be
accessed without completely removing the panel from its wall box or V-Box
enclosure by removing the top two screws and loosening the bottom two
screws a few turns. Then lean the panel out from the wall. The controls will