Tektronix SPECMON3 Manual page 259

OFDM Analysis
Settings
Analysis Offset
Auto
Analysis Length
Auto
Actual
Time Zero Reference
Units
xxx
Analysis Offset
Use analysis offset to specify where measurements begin. Be aware that you cannot set the Analysis
Offset outside the range of time covered by the current acquisition data. (all time values are relative
to the Time Zero Reference).
You can set the Analysis Length so that the requested analysis period falls partly or entirely outside the
current range of acquisition data settings. When the next acquisition is taken, its Acquisition Length will
be increased to cover the new Analysis Length, as long as the Sampling controls are set to Auto. If the
Sampling parameters are set to manual, or if the instrument is analyzing saved data, the actual analysis
length will be constrained by the available data length, but in most cases, measurements are able to be
made anyway. The instrument will display a notification when measurement results are computed from
less data than requested. Range: 0 to [(end of acquisition) - Analysis Length)]. Resolution: 1 effective
sample (or symbol).
Analysis Length
Use the analysis length to specify how long a period of time is analyzed. As you adjust this value, the
actual amount of time for Analysis Length, in Symbol or Seconds units, is shown below the control in the
"Actual" readout. This setting is not available when Auto is checked. Range: minimum value depends on
modulation type. Resolution: 1 symbol.
SPECMON3 & SPECMON6 Printable Help
Description
Specifies the location of the first time sample to use in measurements.
When enabled, causes the instrument to set the Analysis Offset value based on the
requirements of the selected display.
Specifies the length of the analysis period to use in measurements. Length is specified in
either symbols or seconds, depending on the Units setting.
When enabled, causes the instrument to set the Analysis Length value based on the
requirements of the selected display.
This is a displayed value, not a setting. It is the Analysis Length (time or symbols)
being used by the analyzer, this value may not match the Analysis Length requested
(in manual mode).
Specifies the zero point for the analysis time.
Specifies the units of the Analysis Length to either Symbols or Seconds.
Analysis Time Tab – OFDM
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