HP 8590 E-Series User Manual page 315

SIGNAL CLIPPED
Indicates that the current FFT measurement sweep resulted in a trace that is above the top
graticule line on the spectrum analyzer display. If this happens, the input trace (trace A) has
been "clipped," and the FFT data is not valid. (U)
Signals do not fit expected % AM pattern
Indicates that the 96 AM routine cannot perform the percent AM measurement because the
on-screen signals do not have the characteristics of a carrier with two sidebands. (U)
Signals do not fit expected TO1 pattern
Indicates that the TO1 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. (U)
SMPLR UNLCK
Indicates that the sampling oscillator circuitry is not functioning properly. If this message
appears, check that the external frequency reference is correctly connected to the EXT REF
INPUT. (U) and (H)
SOFTKEYOVFL
SRQ - - -
The specified service request is active. Service requests are a form of informational message
and are explained in Appendix A of the HP 8590 E-Series and L-Series Spectrum Analyzers
User's Guide. (M)
STEP GAIN/ATTN FAIL
Indicates the step gain has failed. (H)
Stop at marker not available with negative detection
Indicates that the marker counter cannot be used when negative peak detection is selected.
To use the marker counter, turn off negative peak detection with
TABLE FULL
Indicates the upper or lower table of limit lines contains the maximum number of entries
allowed. Additional entries to the table are ignored. (U)
TG SIGNAL NOT FOUND
Indicates the tracking generator output signal cannot be found. Check that the tracking
generator output (RF OUT 500 or RF OUT 75Q) is connected to the spectrum analyzer input
connector with an appropriate cable. (U)
TG UNLVL
This message can indicate the following: that the source power is set higher or lower than
the spectrum analyzer can provide, that the frequency span extends beyond the specified
frequency range of the tracking generator, or that the calibration data for the tracking
generator is incorrect. See "Stimulus-Response Measurements" in Chapter 4 of the HP 8590
E-Series and L-Series Spectrum Analyzers User's Chide for more information.
Too many signal with valid N dB points
Indicates the N dB PTS function has located two or more signals that have amplitudes within
the specified dB from the signal peak. If this happens, you should decrease the span of the
spectrum analyzer so that only the signal that you want to measure is displayed. (U)
DETECTOR PK SP NG .
(17)
If You Have A Problem
(U)
9-15