TB 9-6625-2296-35
Table 20. Frequency Modulation Accuracy - Continued
Measuring receiver1
indications
Test instrument
RF
Modulation
Deviation
rate
modulation
Min
Max
750 kHz
1 kHz
10 kHz
9.50
10.50
750 kHz
1 kHz
25 kHz
22.50
27.50
750 kHz
10 kHz
10 kHz
9.50
10.50
750 kHz
10 kHz
25 kHz
22.50
27.50
900 MHz
30 Hz
100 Hz
.090
.110
900 MHz
30 Hz
10 kHz
9.50
10.50
900 MHz
30 Hz
25 kHz
22.50
27.50
900 MHz
1 kHz
100 Hz
.090
.110
900 MHz
1 kHz
10 kHz
9.50
10.50
900 MHz
1 kHz
25 kHz
22.50
27.50
900 MHz
20 kHz
10 kHz
9.50
10.50
900 MHz
20 kHz
25 kHz
22.50
27.50
1Set
measuring receiver filters as needed.
b. Adjustments
(1) Press key sequence listed in (a) through (f) below:
Meters Menu
(a) MODE MTRS ..........................
Auxiliary
(b) AUX (F6) ..................................
Recall
(c) MEMORY RCL .......................
(d) FIELD SELECT ⇑ ..................
Highlight 10. Factory Defaults
Factory Defaults recall
(e) DATA ENTRY ENTER ..........
NOTE
Assure highlighted area indicates YES before proceeding.
Factory Defaults restored
(f) DATA ENTRY ENTER ..........
(2) Connect measuring receiver power sensor module to TI T/R.
(3) Set measuring receiver to measure FM, with low pass filter of 15 kHz, high pass
filter of 300 Hz, and PEAK/2 detector selected.
(4) Press key sequence listed in (a) through (k) below
Meter Menu
(a) MODE MTRS ..........................
Auxiliary Functions Menu
(b) AUX (F6) ..................................
(c) DATA ENTRY 1 ......................
(d) FIELD SELECT arrow...........
Highlight 13. Gen Modulation
(e) DATA ENTRY ENTER ..........
Select 13. Gen Modulation
FM Deviation (20 kHz)
(f) DATA ENTRY 2 ......................
Correction Factor of 200
(g) DATA ENTRY 2, 0, 0, ENTER .....
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