TB 9-6625-2076-24
(2) Enter TI settings for frequency, FUNCTION/CONTROL %MOD, TONE
SELECT, and RF LEVEL as listed in Table 12. If measuring receiver does not indicate
within limits specified, perform corresponding TI adjustments for nominal indication on
measuring receiver.
Table 12. AM Modulation
Measuring receiver
TI settings
Indication
(%)
TI
adjustme
Function/control
Tone
RF
nt
(MHz)
%MOD
Select
level
Min
Nominal
Max
Key
(dbmW)
110.10
20
90 Hz
-6
19.50
20
20.50
R2
113.00
30
30 Hz
-6
29.25
30
30.75
R4
113.00
30
9960 Hz
-6
29.25
30
30.75
332.00
40
90 Hz
-6
39.00
40
41.00
R3
75.00
95
1300 Hz
-6
90.25
95
99.75
R1
b. Adjustments. No further adjustments can be made.
18. Power Supply
NOTE
Do not perform power supply check if all other parameters are
within tolerance.
a. Performance Check. Connect multimeter to A2A3J1-8 and chassis ground. If
multimeter does not indicate between 4.5 and 5.5 V dc, perform b below.
b. Adjustment. Adjust R2 (located on power supply PCB assembly A5A2) for a
5.0 V dc indication.
19. Final Procedure
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750-25.