User manual

KB-211/KB-211GM Two-Channel Speaker Stations Clear-Com Intercom Systems

Rev. A

• Speaker Dip—If the front-panel speaker is turned on and the VOX

feature is not used, pressing the Talk button will reduce the speaker

output level to avoid feedback.

2—Call Button and Lamp

Pressing the Call button will send a call signal on the selected channel. All the

call lights on that channel will then flash. Call signals can also be sent while

talking if required. The Call lamp will light while the Call button is pressed, or

whenever a call signal is present on the selected channel. An internal option

jumper can be set to allow the Call lamp to light when a call signal is present

on either channel.

3—Tone Alert

An audible tone alert can sound when a call signal is received on the selected

channel or either channel. This can be useful when the operator’s attention

has been drawn away from the KB-211 indicator panel. The audible tone alert

level can be adjusted or turned off by an internal control. The Tone Alert will

not sound if a call signal is originated at the KB-211 station or if the Speaker

ON/OFF Switch is turned off. The Tone Alert plays through both the speaker

and headset if the Speaker ON/OFF Switch is turned on.

4—Intercom Level Control

Turn this control to set the listen level required on the speaker or headset.

This control does not affect the Tone Alert level or the Program Input level.

5—Sidetone Control

Sidetone is the level of the operator’s voice that is heard while talking on the

intercom. Setting a comfortable level of sidetone will ensure that the intercom

line sounds alive and also helps modulate the operator’s voice relative to

other voices on the line.

Typically, different Sidetone settings are needed depending upon whether the

speaker is used. Use one of the following procedures to correctly set the

Sidetone level control.

Sidetone Adjustment Procedure for Headset

Follow these steps to adjust a headset’s sidetone level.

1. Set the Intercom Level control to a comfortable level by having

someone talk to the operator from another station.

2. Press the Talk button and speak into the microphone while

turning the Sidetone control slowly back and forth until the voice

reaches a comfortable level in the headset.

Follow these steps to adjust the sidetone for gooseneck microphones on the

KB-211GM or PT-4 hand-held, push-to-talk microphone with the Speaker

turned on.