Technisonic Industries Limited TiL-91-DE/S, Инструкция по установке и эксплуатации

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3-3
TABLE 3-1 OPERATORS SWITCHES, CONTROLS AND INDICATORS
No.
SWITCHES
CONTROLS &
INDICATORS
FUNCTIONAL DESCRIPTION
1 POWER
ON/OFF
SWITCH
A toggle switch applies the 27.5 volts nominal power supply to the
transceiver. The transceiver is switched to ON in the toggle UP position
the transceiver is switched OFF in the toggle DOWN position.
2 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.
3 FUSE A 5 Amp FUSE protects the 27.5 volts nominal power supply line.
4 FUSE BLOWN
RED LED
INDICATOR
A RED LED indicates when the 5-Amp fuse is "blown", and External
DC, AC, Battery power is present.
5 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.
6 SQUELCH
INDICATOR
GREEN LED
A GREEN LED indicates the squelch circuit is connecting demodulated
audio signal to the VOLUME control.
7 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.
8 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.
9 MIC/PTT
CONNECTOR
A 5-pin connector functions as Microphone/PTT and Test Connector.
Pin 1 - PTT Signal Line
Pin 2 - Microphone Signal Ground
Pin 3 - Microphone Signal and Microphone DC Supply Line
Pin 4 - AGC test voltage
Pin 5 - Squelch test voltage
10 MICROPHONE
PTT
PRESS-TO-TALK (PTT) switch determines transceiver operating mode.
When the PTT switch is pressed, the transceiver operates in Tx mode.
When the PTT switch is released, the transceiver operates in Rx mode.
11 KEYPAD Performs Chan/Freq and Special Feature Selection (Refer Table 3-2).