User manual

Reference View

1. Auto-sensing Mic Headset Connector -

Accepts headsets with monaural headphones; either dynamic and electret microphone.

2. Panel Mic Connector -

Accepts an electret gooseneck microphone. The model MCP-90 series panel mic connector is a 1/4” stereo plug, with

a threaded shaft for easy installation.

3. Vol u m e C o n t r ol -

Adjusts headphone volume only.

4. Vox Trimmers -

Used with the voice-activated microphone feature. Separate trimmers to adjust the voice activation level for the

headset and panel microphones.

5. Headset and Panel Mic Keys -

Used to manually activate either the headset or panel microphone, whichever is being used.

6. Mic Gain -

Used to adjust the level of audio sent from the microphone.

7. All Talk Key -

Used to talk to any station on any channel. This includes all the MS-4002 channels and any channels connected

through an EMS-4001 Expansion Station.

8. PA Key -

If the MS-4002 is connected to a PA system, this key may be used to talk over the public address system.

9. Mic Kill Key -

Used to turn off the microphones of any intercom station on a channel. Also, used to activate program inputs and the

audible beep feature for incoming calls.

10. Intercom Talk Keys -

Momentary or latching (hands-free) operation possible.

11. Call Keys -

Used to place calls on intercom channels and to indicate incoming calls.

12. Intercom Listen Keys -

Momentary or latching (hands-free) operation possible.

FIGURE 1. MS-4002 Reference View

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