Chapter 4
Front-Panel Key and SCPI Command Reference
Measurement keys
239
Front-Panel Key and SCPI Command
Reference
• Minimal: This will choose the minimum IF bandwidth necessary to perform the modulation measurement.
The minimum bandwidth used is determined by the Low Pass Filter setting and is a value that is >
2xLowPassFilter. This mode usually works for most signals with a low modulation index. This mode will
increase measurement throughput because the analyzer can bypass the bandwidth measurement routines that
are performed at initialization for the Auto mode.
4.4.7.2.3 Avg Mode
Selects the type of termination control used for averaging. This determines the averaging action after the
specified number of average count is reached.
• Repeat - After reaching the average count, the averaging is reset and a new average is started
• Exponential - Each successive data acquisition after the average count is reached, is exponentially weighted
and combined with the existing average.
Key Path: Meas Setup
Remote Command: [:SENSe]:MODRate:BANDwidth|BWIDth:TYPE MIN|AUTO|MAN
[:SENSe]:MODRate:BANDwidth|BWIDth:TYPE?
Preset: AUTO
State Saved: Saved in instrument state.
Range: Auto | Man | Min
Dependencies/Couplings: When user set the IF BW, the IF BW Type is automatically set to “Man”.
Notes: The IF BW type “Min” is meaningful only when the Modulation Mode is
“AM”. For FM, PM signal, the result will not be correct with this IF BW
Type.
Example: :MODR:BAND:TYPE MIN
:MODR:BAND:TYPE?
Mode: MRECEIVE
Key Path:
Meas Setup
Remote Command: [:SENSe]:MODRate:AVERage:TYPE REP|EXP
[:SENSe]:MODRate:AVERage:TYPE?
Preset: REP
State Saved: Saved in instrument state.
Range: Repeat | Exponential
Example: :MODR:AVER:TYPE EXP
:MODR:AVER:TYPE?
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