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ACP Measurement
Meas Setup
RBW — the algorithm uses zero-span and an appropriate RBW setting to capture all of the power in the
carrier channel and the offsets. The zero-span algorithm (RBW method) is slower than the IBW method,
but greatly improves repeatability.
Fast (in WCDMA mode or SA mode with 3GPP WCDMA radio standard selected) — this provides
the same method as the Integration BW method, but is optimized for speed to measure a W-CDMA
signal.
Fast (in CDMA2K mode or SA mode with CDMA2K radio standard selected) – this provides faster
measurement using the FFT method with a limited parameter flexibility. When this is selected,
CDMA2K preset offsets are given and control of the following are grayed out:
BW menu, Sweep/Control menu except Pause/Resume, Trace/Detector menu, Carrier Setup, Offset
Limit, RRC Weighting, Filter Alpha, and Noise Correction keys in Meas Setup menu.
In the TD-SCDMA mode, only the Integration BW method is available. Therefore, the Meas Method
key is not displayed in the TD-SCDMA mode.
Key Path Meas Setup
Mode WCDMA, C2K, 1xEVDO, LTE
Remote Command [:SENSe]:ACPower:METHod IBW|IBWRange|FAST|RBW
[:SENSe]:ACPower:METHod?
Example ACP:METH IBW
ACP:METH?
Notes CDMA1xEVDO mode only supports RBW and Integration BW method.
C2K mode only supports RBW, Integration BW and FAST method.
FAST mode is only supported for WCDMA and C2K signal. You must be in
the WCDMA or C2K mode with 3GPP WCDMA or CDMA2K radio
standard. Otherwise a setting conflict error message will be reported.
Supporting FAST mode in C2K is available with the instrument version
A.02.00 or later
You must be in the mode that includes ACP measurements to use this
command. Use :INSTrument:SELect to set the mode.
Couplings IBW (Range) restricts the Res BW available for making this measurement to
30 kHz. When selected, the Res BW is clipped to this value if required and an
error number displayed.
Preset LTE, LTETDD: IBW
WCDMA: IBW
C2K: RBW
WIMAX OFDMA: IBW
1xEVDO: IBW
State Saved Saved in instrument state.
Range Integration BW|Filtered IBW (max dynamic range)|RBW|Fast