3 Short-Range Comms & IoT Mode
3.8 SEM Measurement
Therefore, the total signal acquisition time for the entire offset span is ~(>~Minimum
Acquisition Time) * (The number of chunks).
When in Auto, this parameter’s value is determined by other parameters, such as
Offset Start, Offset Stop, RBW and VBW.
You can manually increase this parameter value from this Auto value.
If increased, the instrument acquires signal for the specified time duration for each
chunk. It performs additional FFTs, and averages or peak-holds the FFT results for a
chunk, depending on Detector settings.
Note that the actual acquisition time for each chunk may exceed the Minimum
Acquisition Time value, in order to satisfy FFT time required by other parameters,
and to perform an integer number of FFTs.
Remote Command
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:SWEep:ACQuisition:TIME <time>, …
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:SWEep:ACQuisition:TIME?
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:SWEep:ACQuisition:TIME:AUTO ON |
OFF | 1 | 0, …
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:SWEep:ACQuisition:TIME:AUTO?
Example
:SEM:OFFS2:LIST:SWE:ACQ:TIME 1.0 ms, 3.4 ms, 2.08 ms, 1.0 ms, 1.0 ms, 1.0
ms
:SEM:OFFS2:LIST:SWE:ACQ:TIME?
:SEM:OFFS2:LIST:SWE:ACQ:TIME:AUTO ON, ON, ON, ON, OFF, OFF
:SEM:OFFS2:LIST:SWE:ACQ:TIME:AUTO?
Dependencies Available only on non-sweeping hardware
Couplings Coupled to Offset Start Freq, Offset Stop Freq, RBW, and VBW when in the Auto state
When you manually set a value when in the Auto state, the state automatically changes to Man
Preset Automatically calculated
ON
State Saved Saved in instrument state
Min 100 ns
Max 4000 s
Sweep Time Annotation (Remote Query Only)
Returns the Sweep Time Annotation value. Available only on non-sweeping
hardware.
The value returned is the estimated turnaround time of each acquisition, in seconds.
The turnaround time is the sum of the signal acquisition time, FFT time, and other
overhead time, to complete the entire offset span of each measurement cycle.
Short Range Comms & IoT Mode User's &Programmer's Reference 1119
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