Intermodulation Distortion Products - HP 8568B Performance Tests And Adjustments Manual

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S E C O N D
O R D E R
Figure 2-27. Intermodulation Distortion Products
If unable to locate intermodulation distortion products, temporarily
increase output power level of frequency synthesizer and synthesized
sweeper by + 10 dB. Return the output power level of both
the
signal sources to
previous settings before making distortion
measurements.
20. On the spectrum analyzer, key in MARKER [n),
31 MHz, MARKER
[
)
CENTER FREQUENCY
a marker at the peak of
product. The response should be below the display line (GO dB
below the input signals).
21. On the spectrum analyzer, key in
MARKER
[
PEAK SEARCH
MHz third-order intermodulation product. The response should be
below the display line (>80 dB below the input signals).
T H I R D
O R D E R
22. On the frequency synthesizer, key in
23. On the spectrum analyzer, key in MARKER IOFF),
29.99 MHz, DISPLAY LINE [ENTER] -90 dBm,
)
FREQUENCY
MARKER
(
PEAK
SEARCH
15. Spurious Responses Test
[
PEAK SEARCH
the
31 MHz third-order intermodulation
[
CENTER FREQUENCY
to position a marker at the peak of the 28
]
S E C O N D
H A R M O N I C S
F R O M S I G N A L
[
FREQUENCY
).
to position
)
28
MHz,
)
S E C O N D
O R D E R
29.99 MHz.
)
Performance Tests 2-53

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