Tektronix RSA6100A Series, Help Manual

Page: 383 / 415

Reference > Troubleshooting Error and Information Messages
Not calibrated
The instrument requires calibration. Calibration can be performed only at a Tektronix Service center.
Contact Tektronix ) to schedule a calibration.
Not enough samples for current setup
The measurement was not able to run because the combination of analysis length, offset, and measurement
bandwidth relative to acquisition bandwidth, were such that not enough samples were available for the
measurement to analyze. This can occur when two or more displays are shown and one display requires
a wide acquisition bandwidth and another display requires a much narrower bandwidth. The display
requiring the much narrower bandwidth must decimate and
fi lter the acquisition record which can result in
too few samples left for the measurement.
Increase the Analysis Length to provide more samples.
Close any displays you don’t currently need.
Not enough samples – try increasing MeasBW
The measurement was not able to run because there are not enough samples available for the measurement
to analyze. The Settling Time measurement requires at least 256 samples. This can occur when two or
more displays are shown and one display requires a wide acquisition bandwidth and another display
requires a much narrower bandwidth. The display requiring the much narrower bandwidth must decimate
and
fi lter the acquisition record which can result in too few samples left for the measurement.
Increase the Analysis Length to provide more samples.
Close any displays you don’t currently need.
No FFT (not all pulses have results)
If a pulse cannot be measured (because its shape is too indistinct or it does not meet the parameters that
de fi ne a pulse (see page 212) ), its results will be “- -" for every measurement on that pulse. The instrument
cannot compute an FFT.
No pulses found
The instrument was unable to fi nd any complete pulses in the signal.
Make sure the analysis length (see page 296) includes at least one complete pulse cycle, from before
one rising edge until after the next rising edge.
Pulse Detection Error
The instrument was unable to detect a pulse.
The pulse Measurement Filter (see page 212) needs to be smaller. Try reducing the bandwidth and/or
selecting the Gaussian fi lter.
Detection threshold is not set to the proper level for the signal. Adjust the Power threshold to detect
pulses (see page 212) .
The pulse interval is too long for the current settings. Try decreasing the fi lter bandwidth (see
page 212) , as this may reduce the number of data points to a manageable quantity.
RSA6100A Series Real-Time Spectrum Analyzers Help
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