Clear-Com SB-704 - Manual (Page 26)

S B - 7 0 4 M A I N S T A T I O N 2 - 8
(0.64 cm) phone jack for a connector. A proprietary mating receptacle is
mounted on the station.
To install a GM-9 or GM-18 panel mount microphone:
1. Check the set screw in the mic mounting flange to make sure it is clear of
the threads in the bushing.
2. Screw the microphone into the bushing hand tight.
3. If desired, set the set screw on top of the bushing to lock the mic in place.
INTERCOM LINE CONNECTORS (REAR
PANEL)
The SB-704 has a single male XLR-3 connector for each intercom line. The
ten switched intercom lines also have male XLR-3 connectors. The pinout of
the intercom connectors is as follows:
Pin 1 --- Ground (Shield)
Pin 2 --- Power
Pin 3 --- Audio
PROGRAM INPUT (REAR PANEL)
A XLR-3F connector provides the main program input to the station. This
input is fed to the front panel program level control for listening in the
headphones or speaker and optionally it can be fed to each of the intercom
lines with the option DIP switches marked program select A-D. Another
option is to feed program audio to the announce output. This is selected by
setting jumper J11 on the main board to the on position.
Separate program inputs are also available for each channel via the accessory
DB-15 connector. Refer to the section on that connector for details. The
pinout of the program input connector is as follows:
Pin 1 --- Ground (Shield)
Pin 2 --- - Signal
Pin 3 --- + Signal
ANNOUNCE OUTPUT (REAR PANEL)
A XLR-3M connector provides the announce output from the station.
Whenever the announce button on the front panel is pressed, the selected
microphone is sent to the announce output and the announce relay is
activated. Simultaneously, if the program audio feed to the announce output is
enabled, it is interrupted by the announcement. Program audio feed to the
announce output is selected by setting jumper J11 on the main board to the on
position. Refer to the section on the accessory connector for instructions on
connecting to the relay contacts.
The pinout of the announce output connector is as follows:
Pin 1 --- Ground (Shield)