Clear-com SB-704 User Manual download pdf (Page 28)

SB-704 MAIN STATION

2-10

Figure 2-6: Accessory Connector DB-15F - Rear View

Auxiliary Program Inputs

Four different program inputs, one for each channel, are provided. These

auxiliary program inputs can only be fed directly to their associated intercom

line. The only controls that affect these inputs are the PGM level controls

associated with each channel and the internal program interrupt switch which

is active if the function has been activated with an option DIP switch and a

talk is active on that channel.

Refer to the illustration for connection of the program inputs. Pins #5 or #14

can be used for connecting shields.

Remote Mic On/Off Switch

An external momentary pushbutton switch connected to pins #5 and #13 will

duplicate the action of the front panel mic on/off switch.

Announce Relay Contacts

A relay is provided that activates when the announce button is pressed and its

contacts are available on the accessory connector. The relay contacts are rated

for 2.0 amps of DC current at 24 VDC and are electrically isolated from the

rest of the station.

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Clear-com SB-704 User Manual Page 28