3M A121 - Manuals

3M A121 – Manual in PDF format online.

Manuals:

Manual 3M A121

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Summary

Page 2 - Mode Configuration; Restaurant/Truck Stop Noise Reduction Level:; Status Indication Table

2 Mode Configuration The 3M Noise Reduction Board can be configured in several different modes by setting DIP switch, SW2. Following is a brief description of each mode and a DIP switch setting table. Noise Reduction: With SW2 number 1 ON, the inbound microphone voice signal is digitized. The noise ...

Page 3 - Troubleshooting; Problem Possible; Wiring Diagrams; Menu Post

3 2. If the A121 is in a half-duplex system, set SW2 number 2 OFF and proceed to step 3. If the A121 is in a full-duplex system set SW2 number 2 OFF. Speak into the headset mic or intercom mic. The echo should increase. Turn SW2 number 2 back ON. The echo should decrease. 3. Set SW2 number 3 for app...

Page 5 - Figure 4. Wiring for 3M D15/D30 Intercom

5 Menu Post To Vehicle Detector MENU SPKR ALT ALERT ALERT OUT MENU SPKR SHIELD MIC MIC AUDIO OUT 3M Base Station MENUSPEAKER MENUMIC COM 12V UNREG VEH DET MENUSPKR MENUSPKR MENUSPKR MENUSPKR SHLD SHLD MIC IN MIC OUT 1 2 3 4 5 5 4 3 2 1 MIC OUT MIC IN MENU INTERCOM COM MIC IN VEH DET MIC IN SHLD SHLD...

3M Manuals