PRESET CONDITIONS

TM 11-6625-2975-12

1-13. TEST SET OPERATION. (CONT)

Lamp check provides the operator with a check of lamps located behind switch actuating lens, various

indicators, and all segments of each seven-segment LED that make up displays.

During lamp check, all lamps, displays, and indicators will light as shown.

Memory check tells the operator if any memory outputs are incorrect. When SELF TEST switch is re-

leased, RDL/DDM/MOD display begins counting from . . . . 01. If a memory output is incorrect,

the count will stop and the number of the memory chip with incorrect output is shown in RDL/DDM/

MOD display. SELF TEST indicator LED also lights. The number of the memory chip and SELF TEST in-

dicator flash on and off indicating malfunction-. If all memory outputs are correct, the count will

reach . . . . 14 and test set will switch to VOR mode preset condition.

PRESET CONDITIONS

For each selected mode of operation (VOR, Iocalizer, glideslope, or marker beacon), test set

automatically sets signal generator parameters. Test set displays, keys, and indicators will light

NOTE:

EL9LX006

SHADED KEYS INDICATE LIT KEYS

1-9