Harding Instruments MicroComm DXI 100 Series Installation Instructions Download

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100 Series Intercom Stations

Document IM- ICM-100-2.2

Page 5

Wire

Signal

Orange

Mic -

White

Mic +

Black

Speaker

Green

Speaker

Yellow

Switch 1

Yellow

Switch 1

Red

Switch 2

Red

Switch 2

The intercom talkback unit is connected to a station audio board the same as any other intercom station via the
MTA connector. The following table gives the pin configuration for the MTA connector.

MTA Pin

Signal

audio +

audio -

N/C

Summary of Contents for MicroComm DXI 100 Series

Page 1: ...e intercom stations are connected to the exchange with a single shielded twisted pair The shields are all grounded at the exchange end through the DB 50 connector and terminated through the BIX field interface block They are all left open at the intercom station end of the cable Where the cable is connected to another cable the shields must be continued from one cable to the other and care should ...

Page 2: ...dspeaking function It still contains a call switch and an internal microphone for audio input signals The perforated area where the loudspeaker normally resides is deleted Installation of the unit is similar to any other intercom station The only difference is that pigtail leads are provided for connection to the horn loudspeaker Note that the horn loudspeaker requires a 25 volt line matching tran...

Page 3: ... with the low clearance outer edges of the loudspeaker or loudspeaker whizzer cone Once the proper mounting location has been determined mark the shock mount mounting holes and use a 3 32 bit to drill approximately 3 16 into the baffle grid members Mount the microphone shock mount with two 4 x 3 8 self tapping screws Microphone Shock Mount Installation After the microphone shock mount has been ins...

Page 4: ...lcro and gently press the talkback kit on to a convenient mounting location on the loudspeaker cone frame as in the following illustration Talkback Kit Installation Complete Finally make the electrical connections to the talkback kit for the loudspeaker and optional switches The loudspeaker connection must be made through a 25 volt matching transformer at a power tap not exceeding one watt The fol...

Page 5: ...reen Speaker Yellow Switch 1 Yellow Switch 1 Red Switch 2 Red Switch 2 The intercom talkback unit is connected to a station audio board the same as any other intercom station via the MTA connector The following table gives the pin configuration for the MTA connector MTA Pin Signal 1 audio 2 audio 3 N C 4 N C ...

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Harding Instruments MicroComm DXI 100 Series, Installation Instructions

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