Telex RadioCom BTR-500/600C - Manual (Page 16)

Audio Channel Switch
Intercom Type Set to Telex
Selects either “IC 1 or 2" (and corresponding pins
on ”IC Loop-thru"). In “Auto” position the switch
allows selection of channels 1 or 2 from the
beltpack.
Figure 23
Audio Channel Switch
Intercom Type Set to RTS
Selects RTS channel 1 or 2 on both I/C jacks (and
corresponding Pins on “I/C Loop-thru”). In “Auto”
position the switch allows selection of channels 1 or
2 from the beltpack.
Telex IN/OUT Switch
Intercom Type Set to Telex
Telex = OUT
Intercom is disconnected from the I/C jacks and
corresponding “I/C Loop-thru” connector pins.
Telex = IN
Intercom is connected to I/C jacks and correspond-
ing “I/C Loop-thru" connector pins.
Intercom Type Set to RTS
Setting of switch has no effect. All I/C jacks and
corresponding “I/C Loop-thru” connector pins are
active.
Figure 24
Telex In/Out Switch
Auxiliary Switch
Turns the “AUX” jack input audio on or off.
The audio out is always sent to the “Aux” jack and
is unaffected by the switch position.
Figure 25
Auxiliary Switch
Auxiliary to I/C Switch (Program Audio)
This switch is located inside the base station. Its
function is to provide a user with the ability to input
a third channel of listen only audio via the “AUX”
jack. This third channel of audio, usually called
“Program Audio” is always heard regardless of
which intercom channel the user is on. The program
audio is heard only on the local base station and its
beltpack.
To gain access to the switch the base station’s top
cover must be taken off. Unscrew the six screws on
the cover and lift off. The switch can be found be-
tween the two shielded compartments (Figure 27).
The switch is labeled “Aux to IC” and should nor-
mally be left in the “ON” position. Unless using the
“AUX” jack for program audio input. Switch to the
“OFF” position if inputing program audio. The
switch now disables auxilary input audio from be-
ing placed on the intercom system but can be heard
locally.
The auxiliary ON/OFF switch must be set to “ON”
to enable input audio through the auxiliary port. The
level of the program audio as heard in the back-
ground of the audio channel currently switch to is
controlled via the “AUX IN" level control on the
front panel.
Code Switch (BTR-600C Only)
Allows the operator to select over 65,000 cipher
codes. The beltpack’s code must match the base sta-
tion’s code for audio recovery. Any combination of
letters and/or numbers may be selected except 0000.
The data is unencrypted when the setting is 0000.
Figure 26
Code Switch
-13-
AUX
OFF ON
AUDIO
CHANNEL
1
AUTO
2
I/C
OUT IN TELEX
A F 2 3