TRT800A / P/N 800ATC-A-(201)-(301)
Operation and Installation
13
Document-No: 03.2112.010.71e / Revision: 1.02
Please refer to section 4.2.1 for configuration of the 24-bit Address (AA)
and Aircraft Category (AC).
2.6
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 works 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.
2.7 Squawk-Setting
The active Squawk is displayed in the upper line, while the standby
Squawk is presented at the lower line.
Setting 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
