TRT800 / P/N 800ATC-(200)-(200)
Operation and Installation
13Document-No: 03.2102.010.71e / Revision: 2.02
2.5 Transponder Mode selection
Press (repeatedly) to select from following Modes:
• STBY Æ „Standby“
Transponder only responds to directly addressed Mode S
interrogations, squitter remains active.
If a ground switch is connected, actuation of this switch will cause
the transponder switch to standby mode.
• ACS Æ„Mode A+C+S“
Standard condition; transponder responds to mode A, C and S
interrogations.
• A-S Æ „Mode A+S, no C“
Altitude is not transmitted (neither on C nor on S requests). All
other Mode-S data as well as Mode-A replies are transmitted.
If no 24-bit address (AA) was defined or entered as “000000“ the
transponder workes as Mode A-C transponder, in that case the
following Modes are possible apart from Standby:
• AC- Æ „Mode A+C“
Transponder replies only on Mode A and Mode-C interrogations.
• A-- Æ „Mode A“
Transponder replies only on Mode A interrogations.
2.6 Squawk-Setting
The active Squawk is displayed in the upper line, while the standby
Squawk is presented at the lower line.
Settgin the Standby Squawk:
• Press
to set the cursor („^“), turn rotary knob to set numbers of
the standby Squawk.
•
Press to activate the Standby Squawk , this moves the current
active Squawk into Standby
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