PERFORMANCE TESTS
e. Set the distortion analyzer to measure the total harmonic distortion (THD) of
the 1-kHz modulation signal.
f. Verify that the THD is less than 5%.
g. Program the remaining combinations of RF frequency, level, and AM depth
listed in Table 4-5.
h. Repeat the test in step g at levels of -2 dBm and -3 dBm, which represent the
extremes of internal circuitry operation.
i. Verify that the mean AM depth (for each combination) is between the allowed
limits and that the THD is less than the allowed limit.
Table 4-5. AM Test Conditions
FREQUENCY
(MHz)
1056
950
700
640
550
320
160
80
40
20
14
LEVEL
(dBm)
0
0
0
0
0
0
0
0
0
0
0
AM
(%)
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
30
50
90
4-19