136 Chapter 2
One-Button Measurement Functions
Meas Setup (Channel Power—CHP)
One-Button Measurement Functions
2.11.5 Optimize Ref Level Sets the input attenuator and reference level to optimize the robustness of the
measurement, which is its freedom from errors due to input compression and log amp
range limitations.
NOTE There will always be a minimum of 2 dB for PSA or 5 dB for ESA of
attenuation set to protect the analyzer input.
Key Path: Meas Setup
State Saved: Not saved.
Remote Command:
[:SENSe]:POWer[:RF]:RANGe:AUTO ONCE
Example: POW:RANG:AUTO ONCE
2.11.6 RRC Filter Pressing RRC Filter turns the Root Raised Cosine filter on or off. This filter is the type
specified in the TETRA and 3GPP W-CDMA standards. This parameter is only available
when either 3GPP W-CDMA or TETRA has been selected as the Radio Std from the Mode
Setup menu. If 3GPP W-CDMA is selected, the rolloff value (alpha) for the filter will be
initially set to 0.22. T is set to 1/RefBW (default 260 ns). If TETRA is selected, the rolloff
will be initially set to 0.35. T is set to 1/RefBW (default 55.56 µs). The rolloff value can be
changed using Filter Alpha.
Key Path: Meas Setup
State Saved: Saved in instrument state.
Factory Preset: Off
History: Added with PSA firmware revision A.03.00.
Added with ESA firmware revision A.09.00.
Remote Command:
[:SENSe]:CHPower:FILTer[:RRC][:STATe] OFF|ON|0|1
[:SENSe]:CHPower:FILTer[:RRC][:STATe]?
Example: CHP:FILT 1
CHP:FILT?
2.11.7 Filter Alpha Press RRC Filter to input the alpha value for the RRC Filter. This parameter is only