Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.5 ACP Measurement
Filter Alpha for Carrier
Inputs the alpha value for the filter used in the current carrier configuration.
Remote
Command
[:SENSe]:ACPower:CARRier[1]|2:LIST:FILTer:ALPHa <real>, …
[:SENSe]:ACPower:CARRier[1]|2:LIST:FILTer:ALPHa?
Subopcode: 1 = BTS/Downlink (Default), 2 = MS/Uplink
Example
:ACP:CARR2:LIST:FILT:ALPH 0.5
:ACP:CARR2:LIST:FILT:ALPH?
Notes Some Modes do not support Carrier subopcode 2. In those cases, commands with subopcode 2 are
accepted without error but ignored
For LTEAFDD or LTEATDD Modes, this control is not shown. In order to maintain backwards compat-
ibility with legacy LTE FDD/TDD Modes, the SCPI command is supported in the LTE & LTE-A converged
applications
Preset 0.22
State Saved Saved in instrument state
Min/Max 0.01/1.0
Offset
Lets you configure the spacing of the offset regions.
Offset Frequency Define
Lets you select offset frequency definition. Each standard defines each offset
frequency from Carrier.
For example, 3GPP2 requires the “From Carrier Center to Integ BW Closer Edge”
definition. LTE conformance test requires “From Carrier Edge to Integ BW Center”
and/or “From Carrier Edge to Integ BW Closer Edge” definition.
CTOCenter
From the lowermost carrier center frequency (for lower offset), the uppermost carrier center frequency
(for upper offset) to the center frequency of each Offset Integ BW
CTOEdge
From the lowermost carrier center frequency (for lower offset), the uppermost carrier center frequency
(for upper offset) to the closest edge frequency of each Offset Integ BW
ETOCenter
From the lowermost carrier center frequency - spacing of this carrier /2 (for lower offset), the
uppermost carrier center frequency + spacing of this carrier /2 (for upper offset) to the center
frequency of each Offset Integ BW
ETOEdge
From the lowermost carrier center frequency - spacing of this carrier /2 (for lower offset), the
uppermost carrier center frequency + spacing of this carrier /2 (for upper offset) to the closest edge of
each Offset Integ BW
Spectrum Analyzer Mode User's &Programmer's Reference 977

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)