Problems Obtaining A Measurement; In Monitor Spectrum Mode, The Signal Is Missing, Or Does Not Look Correct; When Using The Edge Standard, The Spectrum Looks Valid, But All Evm Measurements Are Invalid - Agilent Technologies ESA-E Series User And Programming Manual

Problems Obtaining a Measurement

The following list of common problems and their solutions may help if
you are having trouble obtaining a proper measurement using the
Modulation Analysis Personality.
In Monitor Spectrum mode, the signal is missing, or
does not look correct.
When using the EDGE standard, the spectrum looks
valid, but all EVM measurements are invalid.
Figure 4-37 Spectrum Display of an EDGE Signal with One Active Timeslot
Chapter 4
The analyzer may be tuned to a frequency other than the radio
signal frequency. While the analyzer is in Modulation Analysis
mode, press
FREQUENCY Channel
frequency. If the analyzer frequency was set while in SA mode, the
Modulation Analysis mode frequency was unaffected.
If you are using a signal generator, the data format must be "framed"
and not "patterned," unlike the other TDMA modes. For example,
the signal needs to be bursted with the correct midamble training
sequence code as is defined in the EDGE standard. The spectrum
should look like Figure 4-37
timeslot.
Making Modulation Analysis Measurements
Problems Obtaining a Measurement
and then set the analyzer
for an EDGE signal with only one active
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