TB 9-6625-2079-24
Figure 3. AM and FM accuracy equipment setup.
(3) Position synthesized signal generator controls as listed in (a) through (e) below:
(a)
Frequency Control set to 10 MHz.
(b)
Level Control set to +10.0 dBm.
(c)
FM to Off.
(d)
FM Rate set to 1 kHz.
(e)
FM Deviation set to 10 kHz.
(4) Set measuring receiver to measure FM Deviation.
(5) Set RF output on (do not turn FM on at this time).
(6) Record TI display indication (residual FM).
(7) Set synthesized signal generator FM on. Record TI display indication.
(8) Subtract value recorded in (6) above from value recorded in (7) above.
(9) Establish a ratio reference calculated in (8) on the measure receiver and select
liner ratio function. If measuring receiver display does not indicate between 98% and 102%,
perform b (1) through (3) below.
(10) Set synthesized signal generator frequency to 100 MHz output and set FM
Deviation to 100 kHz.
(11) Press pushbuttons HIGH-PASS (Hz) 10 and RANGE 100; LOW PASS,
200 (kHz).
(12) Set synthesized signal generator FM to off and repeat technique of (6) through
(9) above.
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