5
3.1
Initial operation of the headset
BLUE
words are labels on console. Place the
LISTEN VOLUME
control into the
OFF position
.
(This turns off the overhead speaker in the control room.) Turn the headset
LISTEN
control to
the middle of its rotation. Put the headset on. The headband slides in and out of the ear-cup. The
headset microphone tube telescopes. Adjust the headset for comfort and move the microphone
tube tip so that it is near the corner of your mouth. Listen to someone in the procedure room.
You will hear the people in the procedure room whether the in-line mute switch is in the mute
position or not. Adjust the headset
LISTEN
volume for a comfortable level by means of the
volume control labeled
LISTEN
. The left headset
LISTEN
volume control is for a headset
plugged into the left jack and the right one controls the right jack. The white slotted shaft on
the rear of the console by the left foot switch jack labeled
HEADSET TALK
controls the talk
volume for both the left and right headsets.
3.2
Operation of overhead speaker and desk microphone
The following steps are not required if only a headset is to be used and the desk microphone
and overhead communication speaker are not being used. This is often the case in shared
control rooms.
Adjust the
LISTEN VOLUME
control (large knob in center) to a comfortable level for people
in the control room. The desk microphone has three user selectable modes accessed through
a switch on the side of the microphone base. The modes are TALK, LOCK and MUTE. In
TALK mode, holding down the silent operation touch switch turns on the microphone (Push-
To-Talk). When the microphone is active, the LED ring in the housing will illuminate.
If desired, the microphone may be locked in the always on talk mode by
placing the switch in the LOCK position. In this mode, when you tap the
silent operation touch switch on the microphone base, the microphone
switches between locked on (LED illuminates) and locked off.
The desk microphone can also be used in the MUTE mode. In this mode,
when you hold down the silent operation touch switch on the microphone
base it mutes the microphone (Push-To-Mute).
If the touch switch appears to be malfunctioning, unplug the cable from
the microphone base and reconnect it to reset the switch.
If you hear a hum or squeal, the
TALK VOLUME
control may be turned
too far clockwise; turn it down using your thumbnail or small
screwdriver, as described in Section 2.4. The
TALK VOLUME
may be adjusted by following the directions on the console and
Section 2.4.
When the microphone is active, blue LED
indicators illuminate on the base.
Large On/Off silent operation touch switch is used for three
user selectable modes; Locked ON/OFF, Push-To-Talk or Push-
To-Mute.
