3 WLAN Mode
3.9 Spectral Flatness Measurement
More Information
The Restart function first aborts the current sweep or measurement as quickly as
possible. It then resets the sweep and trigger systems, sets up the measurement
and initiates a new data measurement sequence with a new data acquisition
(sweep) taken once the trigger condition is met.
If the analyzer is in the process of aligning when a Restart is executed, the alignment
finishes before the restart function is performed.
Even when set for Single operation, multiple sweeps may be taken when Restart is
pressed (for example, when averaging/holding is on). Thus when we say that Restart
"restarts a measurement," we may mean:
–
It restarts the current sweep
–
It restarts the current measurement
–
It restarts the current set of sweeps if any trace is in Trace Average, Max Hold or
Min Hold
–
It restarts the current set of measurements if Averaging, or Max Hold, or Min
Hold is on for the measurement
–
depending on the current settings.
With Average/Hold Number (in Meas Setup menu) set to 1, or Averaging off, or no
trace in Trace Average or Hold, a single sweep is equivalent to a single
measurement. A single sweep is taken after the trigger condition is met; and the
analyzer stops sweeping once that sweep has completed. However, with
Average/Hold Number >1 and at least one trace set to Trace Average, Max Hold, or
Min Hold (SA Measurement) or Averaging on (most other measurements), multiple
sweeps/data acquisitions are taken for a single measurement. The trigger condition
must be met prior to each sweep. The sweep is stopped when the average count k
equals the number N set for Average/Hold Number. A measurement average
usually applies to all traces, marker results, and numeric results; but sometimes it
only applies to the numeric results.
Once the full set of sweeps has been taken, the analyzer will go to the idle state. To
take one more sweep without resetting the average count, increment the average
count by 1, by pressing the step up key while Average/Hold Number is the active
function, or sending the remote command CALC:AVER:TCON UP.
Pause/Resume
Pauses a measurement after the current data acquisition is complete.
When Paused, the label on the control changes to Resume. Pressing Resume un-
pauses the measurement. When you are Paused, pressing Restart does a Resume.
WLAN Mode User's &Programmer's Reference 1532
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