User Guide| KB-702/KB-702GM/KB-802-GM-IM
d. Readjust the VOX control. (Refer to the VOX control paragraph in this
section.)
6. Program Level Control: Adjust the program level control to set the program
audio level heard in the headset or panel speaker.
Note: Do not force the trimpots past their stop points. This will damage
them.
7. Speaker On/Off Switch: The speaker on/off switch turns the front panel
speaker on or off. This switch also controls whether the tone alert is heard
through the speaker. The speaker volume will automatically dip whenever the
talk function is set, unless the VOX function is disabled.
8. Mic Select Switch (KB-702GM/KB-802GM-IM only): The mic select switch
selects whether the panel microphone or the headset microphone is active. If
the VOX feature is enabled, it is only operational when the panel microphone is
active.
9. Channel Switch: This switch selects whether the speaker station is active on
intercom channel A or channel B.
10. Headset Connector: The headset connector is located on the front panel. All
Clear-Com headsets are recommended for use with the KB-702. The Clear-Com
handheld push-to-talk microphone will also plug into the 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/KB-802GM-IM only): Clear-Com
recommends the GM-9 and GM-18 plug-in panel microphones for use with the
KB-702GM/KB-802GM-IM. The GM-9 is 9 in. (23.04 cm) long and the GM-18 is 18
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