BendixKing MST 67A - Manual (Page 12)

006-18301-0000 Rev 0 Effective Date 7/04 8
FUNCTION SELECTOR CTA 81 B CONTROL UNIT ONLY
(SELECTS OPERATING MODE)
The left ATC 1 TEST position (CCW) tests the Mode S Transponder.
The right ATC 2 TEST position (CW) tests the ATCRBS transponder
only.
Moving the spring loaded knob to either TEST position initiates a self
test in the respective unit. Refer to the Test section in the Appendix
for a detailed description of test function.
Selection of either STBY position places both transponder in standby.
Use standby during ground operations.
ATC 1 ON activates the Mode S transponder.
ON ATC 2 activates the ATCRBS transponder.
TA (Traffic Advisory) mode. N/A
TA/RA (Traffic Advisory and Resolution Advisory) mode. N/A
Controls and Displays
STBY
ATC 1 ON
TA TA/RA
TEST
ON ATC 2
STBY
TEST