
16. Harmonic and Intermodulation Distortion Test
49. Press MARKER
@.
Activate [CENTER FREQUENCY) and press (JJ
once to tune to the third order product at 3998.5 MHz. Wait for
completion of the sweep.
50. Press MARKER [PEAK SEARCH)
Record the MKR A amplitude:
dB
51. Press
@)
three times to tune to the third order product at 4001.5
MHz. Wait for completion of the sweep, then press MARKER
(
PEAK
SEARCH].
Record the MKR A amplitude:
dB.
52. Choose the smallest MKR A amplitude in steps 50 and 51.
Record its absolute value: S =
dB.
53. Compute the
TOI:
TO1 = P +
S/2
=
-25
dBm
+
dB/2
=
dBm
54. The result should be
>
+ 7
dBm.
TO1 for signals of 3999.5 MHz and 4000.5 MHz
dBm
55. Repeat steps 41 through 53 for the input signal frequencies and
the third order products shown in
‘Ikble
2-19. The TO1 for each
setting should be
>
+ 5
dBm.
‘Ihble
2-19. TO1 Measurement Settings
Input Signal Frequencies Third Order Products Third Order Suppression
TOI
PW
ww
0-w
Pm)
8999.500 9000.500 8998.500
9001.500
13999.500 14000.499
13998.501
14001.498
2-72 Performance Tests
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