Clear KB-702 User Manual download pdf (Page 11)

KB-702/KB-702GM TWO-CHANNEL SPEAKER STATIONS

1-5

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 CONNECTIONS

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 then be

accessible as shown in the lower view of Figure 1-3. The numbers in the left

column of the following descriptions refer to Figure 1-3.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 27 28

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Clear KB-702 User Manual Page 11