Keysight N9927-90001 User’s Guide 249
RTSA (Real-Time Spectrum Analyzer) Mode—Option 350 (CPU2 Only)
Record/Playback (RTSA Option)
Other display settings, such as Scale and acquisition, can also be changed
during recording but are not saved with the session file. Think of these as
settings that help YOU see the recording and playback activity. They do NOT
change the data that is recorded.
During Playback
Changes to the states listed above are NOT allowed during playback.
However, all other display settings can be changed during playback to help
you analyze the recorded data.
In RTSA mode, trace recordings are played back as is and the Trace State
cannot be modified. No measurement post processing is allowed, and no
Density or Spectrogram information can be recovered. This is because RTSA’s
Real-Time Spectrum and Density displays are not derived from the trace data,
but instead require independent high speed hardware acquisition.
Record/Playback Exceptions
Markers can be activated and moved to help analyze recorded data. However,
marker position control is only available when playback is Paused.
About State and User Tags
When any of the State settings (listed above) are changed during a recording,
a ‘state tag’ is inserted at the first trace number to be recorded with the new
setting.
Table 10-1 Summary of RTSA State Settings
Option Settings
RTSA
Acquisition Time
Detector(s)
External Gain
Frequency Range
Preamp On/Off
Resolution BW
RF Attenuation
Trace State(s)
Trigger Settings
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