Chapter 14 653
Analyzer Messages
Interpreting Analyzer Messages
SAMPLE FAIL (H)
During the confidence test routine, CONF TEST, the sample-detector
test, has failed. The test makes a statistical comparison between the
peak-to-peak amplitude of the noise floor for the positive-peak detector
and the noise floor for the sample detector.
The error message is displayed if the standard deviation of the data for
the sample detector is less than the standard deviation of data for the
positive-peak detector.
Related Assemblies
A16 processor/video assembly.
Troubleshooting Hints
This test performs a functional check of switching for the sample
detector on the A16 processor/video assembly.
Refer to the CONF TEST description in Chapter 13 for more information
about the confidence test routine.
SETUP ERROR (U)
Indicates that the span, channel bandwidth, or channel spacing are not
set correctly for the adjacent channel power or channel power
measurement.
SIGNAL CLIPPED (U)
Indicates that the current FFT measurement sweep resulted in a trace
that is above the top graticule line on the analyzer display. If this
happens, the input trace (trace A) has been “clipped,” and the FFT data
is not valid.
Signals do not fit expected % AM pattern (U)
Indicates that the % AM routine cannot perform the percent AM
measurement because the on-screen signals do not have the
characteristics of a carrier with two sidebands.
Signals do not fit expected TOI pattern (U)
Indicates that the TOI routine cannot perform the third-order
intermodulation measurement because the on-screen signals do not
have the characteristics of two signals and two distortion products.
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