SB-704 MAIN STATION
1-10
intercom line and break it apart in several places while it is plugged into the
station to isolate the section of line that is shorted.
SUMMARY OF MAIN FRONT-PANEL KEYS,
LIGHTS, AND CONTROLS
Table 1 summarizes the meaning of various front-panel keys, lights, and
controls.
Function “On” State “Off” State Momentary or Latching
Microphone Key
(activates selected microphone,
either panel or headset)
Blue Off Latching only (activates automatically
when other keys such as Talk,
Announce, All Talk are pressed)
Listen Key (press to listen to
a channel)
Green Off Latching only (can be set to activate
automatically with “talk”)
Talk /Power-On Key (press
to talk on a channel)
Amber Blue (indicates that
the station is
receiving power,
but the “talk’
feature is off)
Both
Call Key (press to send a call
signal on a channel)
Red
(flashing)
when
receiving
or sending
call signal)
Off Momentary only
Announce Key (press to send
microphone’s audio to
“announce” output, i.e. PA
system)
Amber Off Momentary only
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