TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TSC-4100/4200.4300 92-SC
Installation & Operating Instructions
TiL 92RE125 Rev L
3-3
TABLE 3.1
OPERATORS SWITCHES, CONTROLS AND INDICATORS
SWITCHES
CONTROLS &
INDICATORS
FUNCTIONAL DESCRIPTION
POWER ON/OFF
SWITCH
A toggle switch applies the AC power to the power supply and the DC 27.5 volts
nominal power to the transceiver. The transceiver is switched to ON in the toggle
UP position the transceiver is switched OFF in the toggle DOWN position.
POWER ON LED
INDICATOR
A GREEN LED Indicates when the POWER ON/OFF switch is set to ON and
voltage is applied to the transceiver.
FUSE
A 5 Amp FUSE protects the 13.7 dc volts nominal power supply line.
SQUELCH
CONTROL
A linear potentiometer determines the squelch threshold level. When the
SQUELCH CONTROL is rotated in the counter-clockwise direction, the
SQUELCH GREEN LED indicates that the squelch is connecting demodulated
audio to the VOLUME control.
SQUELCH
INDICATOR
A GREEN LED indicates the squelch circuit is connecting demodulated audio
signal to the VOLUME control.
Tx ON AMBER
LED INDICATOR
An AMBER LED indicates when the transceiver is keyed by the microphone
PRESS-TO-TALK (PTT) switch or remote land line, and the transceiver is
operated in the Tx mode. The Tx ON AMBER LED switches OFF, when the
transceiver is operated in the receive mode.
VOLUME
CONTROL
A logarithmic potentiometer determines the audio level applied to the internal
speaker when the transceiver is operated in the receive mode. When the
SPEAKER/PHONE connector is in use the internal loudspeaker is disconnected
and the VOLUME CONTROL sets the audio level applied to the external speaker
or headphone.
MIC/PTT
CONNECTOR
A standard 0.2 inch 3-pole jack is provided to connect a microphone with PTT to
the transceiver front panel.
TX LABEL
Indicates the frequency programmed for transmit.
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