TB 9-6625-152-24
(4) Repeat technique of (2) (c) and (3) above for remaining frequencies listed in
b below.
Table 5. Residual FM.
Test instrument
Measuring receiver
Output frequency (MHz)
Indication limits
1000
<12 Hz
750
<12 Hz
500
<12 Hz
250
<12 Hz
10
<12 Hz
1
<12 Hz
0.4
<12 Hz
(5) Configure measuring receiver for AM depth measurement with 300 Hz high pass
filter, 3 kHz low pass filter and peak + -/2 detector activated. If measuring receiver
indication is not within limits specified in first row of table 6, perform b below.
(6) Repeat technique of (2) (c) and (6) above for remaining frequencies listed in
b below.
Table 6. Residual AM.
Test instrument
Measuring receiver
Output frequency (MHz)
Indication limits
0.4
<1%
1
<1%
10
<1%
250
<1%
500
<1%
750
<1%
1000
<1%
(7) Set TI output to minimum.
b. Adjustments. None.
11. Harmonics and Spurious Signals
a. Performance Check
(1) Set TI as listed in (a) through (g) below:
(a) Press RF IN/OUT SELECT to select BNC output.
(b) Press Rx TEST key then [RF Gen].
(c) Press FREQ and set to 400 kHz.
(d) Press LEVEL and set to 0 dBm.
(e) Press Rx TEST, [Mod Gen], [Gen1/Gen2] until MOD1 FREQ is
highlighted, then press ON OFF key to off.
(f) Press Rx TEST, [Mod Gen], [Gen1/Gen2] until MOD2 FREQ is
highlighted, then press ON OFF key to off.
