Rear Panel - Telex Radiocom BTR-200 Series Service Manual

Ext Intercom Switch, Level Control, and In-
dicator: This switch enables the wired intercom
interface when "IN", and disables it when "OUT".
For RTS intercoms, the "IN" position is channel A
and the "OUT" position is channel B. Ascrewdriver
adjustable control is provided to control the input
level of the wired intercom.
Auxiliary Audio Enable Switch, Level Control,
and Indicator: The switch enables and disables the
Auxiliary intelface when "IN" and "OUT", respec-
tively. The function of the level control here is the
same as that described for the intercom.
REAR PANEL (Refer to Figure 3)
(j
TransmitAntenna Connector: Connect 5/8-wave
antenna (supplied) to this connector. Antenna color
should match connector dot on BTR-200.
Receive Antenna Connector: Connect 5/S-wave
antenna (supplied) to this connector. Antenna color
should match connector dot on BTR-200.
Transmit Switch: Slide switch that allows the
operator to select one of three transmit modes. In
the "OFF" position, the transmitter is always off.
This mode may be used if the base is functioning
solely as a monitor. In the "CONT" position, the
transmitter is always on. This continuous mode is
recommended over the "REMOTE" mode. In the
"REMOTE" position, the transmitter is enabled
only when one or more portables are active.
Headset Microphone Select Switch: This switch
allows the user to select either an Electret or
Dynamic microphone. This switch
i~
factory preset
to DYN Position.
NOTE: All Telex headsets that are used with this
intercom are dynamic type microphones.
Intercom Connectors: Connections to interface
the BTR-200 with a wired intercom system.
Auxiliary Output/Input Connectors: Can be
used for 2-way (four wire) input and output to the
BTR-200 or as a simplex input or output. Typical
uses are 4 wire low level intercoms, tape recorders,
public address inputs or outputs, or when operating
two BTR-200 units simultaneously.
Power Jack: For external AC wall supply adaptor
(supplied) or any filtered 12 to 14 VDC/300 rnA
source, or 13.0 VAC RMS/300 rnA source.
Speaker Jack: Allows the user to connect an ex-
ternal speaker (8 ohms minimum) to the unit.
Speaker Gain Control: Screwdriver adjustable.
Adjust the gain control clockwise to increase
speaker gain or counterclockwise to decrease
speaker gain.
NOTE: Leave setting counterclockwise if no
speaker is attached.
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