Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.9 SEM Measurement
Modes other than MSR, LTE-A, 5G NR
Options:
CTOCenter
From carrier center to the center ofoffsetmeasuring filter*
CTOEdge
From carrier center to the nominal –3 dB point of the offsetmeasuring filter*
closer to the carrier
ETOCenter
From Center Frequency – Span of Ref Channel/ 2 (for lower offset), Center
Frequency + Span of Ref Channel / 2 (for upper offset) of the carrier closest to
each offset to the centerofoffset measuring filter *
ETOEdge
From Center Frequency – Span of Ref Channel/ 2 (for lower offset), Center
Frequency + Span of Ref Channel / 2 (for upper offset) of the carrier closest to
each offset to the nominal –3 dB point of the offsetmeasuring filter * closer to the
carrier
*Measuring filter = Meas BW (N) x Res BW
** RF BW = BW
channel,CA
which is defined in each 3GPP standard, regardless of
“Measure Carrier” for the uppermost and the lowermost carriers being Enabled or
Disabled. When Number of Component Carriers = 1, RF BW = BW
channel
= 2 x
F
offset,RAT
Remote
Command
[:SENSe]:SEMask:OFFSet[1]|2:TYPE CTOCenter | CTOEdge | ETOCenter | ETOEdge
[:SENSe]:SEMask:OFFSet[1]|2:TYPE?
Example
:SEM:OFFS:TYPE ETOC
:SEM:OFFS:TYPE?
Notes OFFSet1 is for BTS, 2 for MS. Default is BTS
Note that Offset sub op code 2 is supported only in non-SA Modes. In SA Mode, Offset sub op code 1 is
used for both BTS and MS
Preset
CTOCenter
State Saved Saved in instrument state
Range Carrier Center to Meas BW Center | Carrier Center to Meas BW Edge | Carrier Edge to Meas BW Center |
Carrier Edge to Meas BW Edge
Mode: MSR, LTEAFDD, LTEATDD
Options:
CTOCenter
From the lowermost carrier center frequency (for lower offset), the uppermost
carrier center frequency (for upper offset) to the center of offset measuring filter*
CTOEdge
From the lowermost carrier center frequency (for lower offset), the uppermost
carrier center frequency (for upper offset) to the nominal -3 dB point of the offset
measuring filter* closer to the carrier
1626 Spectrum Analyzer Mode User's &Programmer's Reference

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)