Park Air Systems T6TR, User Documentation

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T6TR VHF 50 W Transceiver Page 3 Operation
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Ready Indicator
A green indicator that lights when the transceiver is ready for use and no BIT faults have been detected.
Standby Indicator
A red indicator that lights when the transceiver is in standby mode. When in standby mode, most of the
radio's circuits are inactive, the front panel LCD is blanked, and the transceiver cannot be keyed.
Standby mode is selected and deselected using the front panel Scroll/Select switch and LCD, by initiating
an instruction through a MARC system, through a T6 controller or through the VFP.
Reference Connector
An SMB jack socket that allows a frequency counter to monitor the transceiver's reference frequency.
This connector is used only for maintenance purposes. The instructions for checking and adjusting the
reference frequency are given in the Maintenance section.
Headset/Microphone/Diagnostics Connector
A dual purpose connector that allows either a headset/microphone, or a PC, to be connected to the
transceiver. The connector is a 7-pin self-locking DIN socket; the pin-out is shown in
Table 1.
A microphone is fitted to this connector to enable the transceiver to be operated in AM local mode. A PC
can also be connected to allow the VFP to be displayed. Using the VFP is detailed in the maintenance
topic. The PC connections at the transceiver are shown in
Table 2 .
Table 1 Headset/Microphone/Diagnostics Connector - Audio Connections
Pin
Number
Signal
Input or
Output
Description
1 Microphone ground - 0 V.
3 Microphone PTT Input 0 V to PTT.
5 Sidetone/headset drive Output 0 to 3 V pk-pk.
6 Microphone input Input 2 to 35 mV rms on Passive setting and 8 to 140 mV rms
on Active setting to remain in VOGAD range.
7 Ground - 0 V.
Viewed from front