3 Short-Range Comms & IoT Mode
3.8 SEM Measurement
sweep is equivalent to a single measurement. A single sweep is taken after the
trigger condition is met; and the instrument stops sweeping once that sweep has
completed. However, with Average/Hold Num >1, and at least one trace set to Trace
Average, Max Hold, or Min Hold, or a Waterfall window being displayed, 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 Num.
Once the full set of sweeps has been taken, the instrument goes 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 by sending the remote command :CALC:AVER:TCON UP.
Trace Update
The numeric results are not blanked at any time during the restart cycle.
For slow sweeps (see Trace Update section in Trace/Detector), the traces are
updated real-time during the sweep. There may be a special circumstance in
application mode measurements where an exception is made and the traces and/or
results need to be blanked before displaying the new results.
To summarize, the following list shows what happens to the trace data on various
events:
Event Trace Effect
Clear/Write pressed (even if already in Clear/Write) Set to mintracevalue
Max Hold pressed (even if already in Max Hold) Set to mintracevalue
Min Hold pressed (even if already in Min Hold) Set to maxtracevalue
Trace Average pressed (even if already in Trace
Average)
Trace data unaffected but start new
sweep/avg/hold
Restart pressed Trace data unaffected but start new
sweep/avg/hold
Parameter requiring restart changed (e.g., RBW) Trace data unaffected but start new
sweep/avg/hold
Sweep and Trigger Reset
Resetting the sweep system resets the average/hold count k to 0. It also resets the
set point counter to 0. Resetting the trigger system resets the internal auto trig
timer to the value set by the Auto Trig control.
1190 Short Range Comms & IoT Mode User's &Programmer's Reference
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