PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
PRIMUS
â
II Radio System
C--22
D
Transponder Select (1/2) Button
-- When the cursor is located in
the ATC window, this key is used to select the cross--side
transponder. The transponder in operation is indicated by a 1 or 2
located in front of the selected mode. Since only one transponder
can be operated at a time, the selected ATC transponder code is
duplicated on each RMU. For the RMU being operated from
cross--side, the data is displayed in yellow.
D
Mode Line Select Key
-- Pushing this key moves the cursor to the
mode line and enables the following functions:
-
Repeated pushes of the mode key toggles the transponder
between standby and the last active mode.
-
With the cursor on the mode line and an active mode selected,
push the 1/2 key to toggle between transponder 1 active and
transponder 2 active.
-
Turn either TUNE knob to change the active mode. The available
selections are listed in table C--4.
Annunciation
Mode
ATC ON
Replies on modes A and S, no altitude reporting
ACT ALT
Replies on modes A, C, and S, with altitude
reporting
TA ONLY
The TCAS traffic advisory mode is selected
TA/RA
The TCAS traffic advisory/resolution advisory
mode is selected
Transponder Modes
Table C--4
D
Range Line Select Key
-- Pushing this key moves the cursor to the
range select line. The TCAS range can be selected by turning either
TUNE knob or by repeated pushes of the range select key. The
available ranges are 6, 12, 20, and 40 NM.
D
TCAS Extended Altitude Select Key
-- Pushing this key moves the
cursor to the extended altitude select line. The extended altitude
selections can be selected by turning either TUNE knob or by
repeated pushes of the range select key repeatedly. The available
selections are listed in table C--5.
