Clear-Com MS-702 - Manual (Page 12)

C l e a r - C o m ®
M S - 7 0 2 T w o - C h a n n e l M a i n S t a t i o n I n s t r u c t i o n M a n u a l
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pressed to quiet the line in this situation. Those needing to communicate
can then set their talk functions to on as needed.
Note: The RMK switch can only function if the MS-702 main station is
powering all of the stations in the system. The switch
momentarily interrupts power to the other beltpacks and stations
in the system. If there are other power supplies or main stations in
the system, then the RMK switch cannot interrupt power and
therefore cannot work.
12. Mic Select Switch: Set the mic select switch to select whether the panel
microphone or the headset microphone is active.
13. Panel Mic Gain: This control is located on the inside of the MS-702
chassis. It may be used to increase or decrease the volume of the panel
microphone. It has no effect on the sensitivity of the headset microphone.
To adjust the panel microphone gain, remove the top cover of the
MS-702. Locate the R161 jumper, which is located on the leftmost side of
the circuit board, toward the front of the MS-702 when facing it. Use a
small screwdriver to turn the control clockwise to increase sensitivity or
counterclockwise to decrease sensitivity.
Figure 2: Gain Adjust Control R161
14. Announce: Press the announce button to make stage or PA system
announcements. It directs the audio from the selected headset or panel
microphone to the annc out rear panel connector and activates the
announce relay. 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
JP2 on the main board to the on position. Optionally, pressing the
announce button can also disconnect the selected headset or panel
microphone audio from the intercom line(s). This option is controlled by
the interrupt announce option switch.
18. Panel Mic Connector: Clear-Com recommends the GM-9 and GM-18
plug-in panel microphones for use with the MS-702. The GM-9 is 9 in.
(22.86 cm) long and the GM-18 is 18 in. (45.72 cm) long. The
microphone is an electret type. The 1/4 in. (0.64 cm) phone jack on the
microphone mates with the panel mic receptacle on the front panel of the
MS-702.
To install a GM-9 or GM-18 microphone, use the following steps:
R161
Gain Adjust