BendixKing MST 67A - Manual (Page 15)

MST 67A Pilot’s Guide
Effective Date 7/04 006-18301-0000 Rev 0 11
Controls and Displays
PS 578A TRANSPONDER CONTROL UNIT
PS 578A Single or Dual Mode S Control Unit (Dual Unit shown).
PS 578A CONTROLS AND DISPLAYS
The PS 578A Control Unit is the master control for the transponder.
The PS 578A will also display the selected 4096 ATC code and current
mode of operation in the display window. Versions are available to con-
trol one or two transponder. A “Fail” annunciation indicates failure of the
selected transponder, antenna or control data.
Note: If the PS 578A is interfaced to a MST 67A Mode S transponder
and the MST 67A senses a failure, a failure annunciation will be shown.
A maintenance check should be performed.
The Display Window Displays ATC code
selection, Flight ID (FID) selection, whether
transponder #1 or #2 is active, transponder
mode, transponder ident and own aircraft
flight level (in TEST).
1/2 selects the active transponder. The other unit is
placed in standby.
IDT initiates IDENT feature for ATC. The IDENT
function is used at the request of an Air Traffic
Controller, and holds the Ident reply for 18 ± 1
seconds.
(Pushbutton)
(Pushbutton)