RADIO FREQUENCY ASSEMBLY (A1A1) ALIGNMENT-CONT.

T. O. 12P4-2APX-192

NAVAIR 16-35TS1843-1

TM 11-6625-1646-25

NOTE

4. Perform interrogation level alignment as follows:

An intermittent GO, NO GO may be

a. Place transponder test set test set AN/APM-362

displayed on the transponder test set test

controls in the following positions:

set AN/APM362 when adjusting AlAAS5C5

OPERATE/STANDBY - STANDBY

(01A23375021-11 only) and AlAlA5C6 at the

TS1843( )/APX POWER AND CONTROL -OFF

*3 MHz points.

When an intermittent

PRF SELECT - 80%

condition is encountered, alignment should

BEAT FREQUENCY SELECT - OFF

be repeated until the GO indicator is on

VIDEO GAIN ADJUST - INC

steady.

MODE SELECT - 2

d. Adjust AlAlA5C5 (01A233750-21-11 only) and

b. Make test connections per figure 9-10. Connect

AAlA5C6 for maximum pulse amplitude display on

oscilloscope probe to transponder test set test set AN/APM-

oscilloscope.

362 connector J5.

e. Move transponder test set testsetAN/APM-362

c. Move transponder test set testsetAN/APM-362

TS1843( )/APX POWER AND CONTROL switch to OFF.

TS1843( )/APX POWER AND CONTROL switch ON. Adjust

Disconnect alignment connections; alignment is complete.

VIDEO GAIN ADJUST control for oscilloscope display of two

pulses spaced five microseconds apart with an amplitude of 1

volt (approximate).

9-22