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ACP Measurement
Meas Setup
PhNoise Opt State
Selects the LO (local oscillator) phase noise behavior for various operating conditions.
Meas Method
Sets the desired method to measure ACP.
Integration BW — one sweep of the trace is taken, and the band power for each offset is computed.
Depending on the status of the Meas Type parameter (Total Power Reference or PSD Reference), results
are displayed relative to the total power or the power spectral density. The display reflects either the
current trace or a bar graph view.
Filtered IBW (max dynamic range) — the ACP Path is used to compute ACP when an ACP path is
available. This method increases dynamic range, but increases measurement time as it limits the
resolution bandwidth. This method is useful for improving dynamic range on a W-CDMA signal because
a sharp cutoff bandpass filter is used. The accuracy of the adjacent channel power ratio is not degraded
by this method, but the absolute accuracy of both adjacent channel power and carrier power are degraded
by up to about 0.5 dB.
Readback Text “Auto” is underlined when Auto is selected, otherwise the Man is underlined.
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00, A.03.00, A.04.00
Key Path
Meas Setup
Mode WCDMA, C2K, 1xEVDO, LTE
Remote Command [:SENSe]:ACPower:FREQuency:SYNThesis[:STATe] 1|2|3
[:SENSe]:ACPower:FREQuency:SYNThesis[:STATe]?
Example ACP:FREQ:SYNT 1
ACP:FREQ:SYNT?
Notes Parameter key:
1 - optimizes phase noise for close-in from the carrier.
2 - optimizes phase noise for wide-offset from the carrier.
3 - optimizes LO for tuning speed.
Preset Because this function is in Auto after preset, the state of this function after
Preset will be automatically calculated.
State Saved Saved in instrument state.
Range Hardware dependent:
Readback Text Close-in|Wide-offset|Fast Tuning, also the Man must be underlined.
Initial S/W Revision Prior to A.02.00
Modified at S/W Revision A.02.00, A.03.00 A.04.00