TB 9-6625-2224-24
(3) Adjust autotransformer to 105 V. Microwave frequency counter will indicate
within 0.003 percent of indication recorded in (2) above.
(4) Adjust autotransformer to 125 V. Microwave frequency counter will indicate
within 0.003 percent of indication recorded in (2) above.
(5) Adjust autotransformer to 115 V.
NOTE
Always approach frequency setting in the same direction to
eliminate backlash error.
(6) Adjust FREQUENCY (MC) control to settings listed in table 3. If microwave
frequency counter does not indicate within limits specified, perform b below.
Table 3. Frequency and Stability
Microwave frequency counter indications
Test instrument
(MHz)
FREQUENCY (MC)
Min
Max
settings
800
(1800)
795
(1790)
805
(1810)
1000
(2000)
995
(1990)
1005
(2010)
1200
(2200)
1195
(2390)
1205
(2210)
1400
(2400)
1395
(2390)
1405
(2410)
1600
(2600)
1595
(2590)
1605
(2610)
1800
(2800)
1795
(2790)
1805
(2810)
2000
(3000)
1995
(2990)
2005
(3010)
2200
(3200)
2195
(3190)
2205
(3210)
2400
(3400)
2395
(3390)
2405
(3410)
(3600)
(3590)
(3610)
(3800)
(3790)
(3810)
Table 3. Frequency and Stability - Continued
Microwave frequency counter indications
Test instrument
(MHz)
FREQUENCY (MC)
Min
Max
settings
(4000)
(3990)
(4010)
(4200)
(4190)
(4210)
(4400)
(4390)
(4410)
(4500)
(4490)
(4510)
b. Adjustments
(1) Adjust FREQUENCY (MC) control to 1000 (1800).
Record microwave
frequency counter indication.
(2) Adjust FREQUENCY (MC) control to 2400 (4000).
Record microwave
frequency counter indication.
(3) Subtract indication recorded in b (1) above from indication recorded in b (2)
above. If difference is not between 1397 and 1403 (2194 and 2206), refer to frequency dial
correction chart (fig. 1) and determine correction value as in example below:
6