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 TM 11-6625-2976-40
2-9. LOC MODE ADJUSTMENT. (CONT)
KEY
CONTROL/SWITCH
POSITION/SETTlNG
7
LOC 1020 HZ
OFF
VOR PWR
OFF
8
VOR 1020 HZ
9
OFF
10
VOR bearing
ANY
11
ATTEN controls (both)
0
NOTE
If any VAR lamp is flashing, press to extinguish.
PROCEDURE
Press and hold LOC 150 HZ DELETE switch. Record voltmeter indication.
1.
2.
Release LOC 150 HZ DELETE switch.
3.
Press and hold LOC 90 HZ DELETE switch. Record voltmeter indication.
4.
Add value recorded in step 3 to value recorded in step 1.
5.
Divide result of step 4 computation by 2.
6. With LOC 90 HZ DELETE switch depressed, adjust R30 until voltmeter indication equals average
computed in step 5 10 mv.
7. Release LOC 90 HZ DELETE switch.
8. Alternately press (and release) LOC 150 HZ and 90 HZ DELETE switches, while readjusting R30
until voltmeter indicates 150 Hz level within 1 mv of 90 Hz level.
9. Disconnect voltmeter and connect modulation analyzer to J3.
10. Press and hold 150 HZ DELETE switch while adjusting R51 until analyzer indicates 20 percent
MOD.
11. Release LOC 150 HZ DELETE switch.
12. Disconnect modulation analyzer.
2-41
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