Park Air Systems T6TR, User Documentation

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T6TR VHF 50 W Transceiver Page 2 Operation
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Controls and Indicators
This section describes the transceiver’s controls, indicators and front panel connectors.
Front Panel
The transceiver’s front panel is illustrated below.
Scroll/Select Switch and LCD
The Scroll/Select switch is used in conjunction with the LCD to select most of the transceiver's
operational settings. During normal operation, the LCD shows the operating frequency, the channel
number (if the channel store facility is used), the carrier offset (if used), and displays a graphical
representation of instantaneous peak power.
The example LCD screen below shows the transceiver operating on 118.000 MHz; the frequency has
been preset as channel 100 and offset at +7.3 kHz.
Transmit Indicator
An amber indicator that lights when the transmit circuit is keyed and producing output power.
Receive Indicator
An amber indicator that lights when a signal is received that is above the squelch threshold. Additionally,
this indicator is lit when the transceiver's squelch facility is switched off (squelch defeated). This indicator
also lights when the transceiver is keyed.
Alarm Indicator
A red indicator that either flashes, or lights, when a BIT fault has been detected. BIT indications are
classified as either Alarms or Alerts.
If an ‘alert’ condition is detected, the Alarm indicator flashes, the Ready indicator remains lit, and the
transceiver remains operational. A BIT ‘alert’ is indicated if:
‰
The transceiver RF output power has reduced from its setting by more than 1 dB but not more
than 3 dB
‰
The supply volts falls below a pre-defined level.
Any other BIT condition results in an alarm. When detected, the Alarm indicator lights and the Ready
indicator becomes unlit; the transceiver cannot be used.
READY
ALARM
TRANSMIT
STANDBY
SCROLL/
SELECT
REFERENCE
F r e q 1 1 8 .0 0 0 M H z
C h 1 0 0 + 7 . 3 k H z
P w r
Scroll Switch LCD
M o d e A M V o i c e 1
RECEIVE
HEADSET/
MICROPHONE/
DIAGNOSTICS