TB 9-6625-2343-40
Figure 11. Phase modulation setup.
(3) Set calibrator for a wideband output frequency of 200 Hz at a level of 89.6 mV.
(4) Press TI keys as listed in (a) and (b) below:
(a) MEASUREMENT FREQ.
(b) TRACK MODE.
(5) Adjust AM/FM test source CARRIER FREQUENCY TUNE for a TI indication
of approximately 400 MHz.
(6) Press TI keys as listed in (a) through (e) below:
(a) TRACK MODE (off).
(b) MEASUREMENT FM.
(c) HP FILTER 50 Hz.
(d) LP FILTER >20 kHz.
(e) DETECTOR AVG.
(7)
Adjust calibrator level for a TI indication of 50 kHz.
(8)
Press TI ΦM key.
(9)
If TI indication is not between 242.4 rad and 257.6 rad, perform b below.
(10)
Press TI keys as listed in (a) and (b) below:
(a) MEASUREMENT FM.
(b) HP FILTER 300 Hz.
(11)
Set calibrator for a wideband output frequency of 1 kHz at a level of 446.3 mV.
(12)
Adjust calibrator level for a TI indication of 250 kHz.
Press TI ΦM key.
(13)
(14)
If TI indication is not within limits specified in the first row of table 9, perform b below.
(15) Repeat technique of (10)(a) and (11) through (13) above for remaining calibrator
initial settings and TI FM deviations in table 9. If TI indications are not within limits
specified, perform b below.
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