Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.9 SEM Measurement
Start Freq
Specifies the start frequency for the currently selected offset. Also enables you to
toggle that offset between On and Off.
When sending the remote command, missing values are not permitted; that is, if you
want to change values 2 and 6, you must send all values up to 6. Subsequent values
will remain unchanged. The query for this parameter returns 14 values for WLAN
mode, 12 values for other modes.
Remote
Command
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:FREQuency:STARt <freq>, …
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:FREQuency:STARt?
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:STATe ON | OFF | 1 | 0, …
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:STATe?
Example
:SEM:OFFS2:LIST:FREQ:STAR 2.515 MHz, 2.715 MHz, 3.515 MHz, 4.00 MHz, 8.00
MHz, 12.50 MHz
:SEM:OFFS2:LIST:FREQ:STAR?
:SEM:OFFS:LIST:STAT ON, ON, ON, OFF, OFF, OFF
:SEM:OFFS:LIST:STAT?
Notes Comma-separated list of values
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
If the offset is outside of the frequency range, the result spectrum will be invalid
Couplings Coupled to Stop Freq. When the start freq goes above the stop freq, the stop freq is automatically
adjusted to the start freq plus 100 Hz
Preset When the max number of offsets is 6:
Mode Values
SA 2.515 MHz, 2.715 MHz, 3.515 MHz, 4.00 MHz, 8.00 MHz, 12.50 MHz
WCDMA 2.515 MHz, 2.715 MHz, 3.515 MHz, 4.000 MHz, 8.000 MHz, 12.50
MHz|2.515MHz, 4.000 MHz, 7.500 MHz, 8.500 MHz, 12.5 MHz, 15 MHz
When the max number of offsets is 12 in these modes, the preset value of Offset G ~ L is the same as
the Offset F value
Mode Values
MSR 15 kHz, 215kHz, 1.015MHz, 1.5MHz, 10.5MHz, 15.00MHz, 30MHz, 30MHz,
30MHz, 30MHz, 30MHz, 30MHz | 15kHz, 215kHz, 1.015MHz, 1.5MHz,
10.5MHz, 15.00MHz, 30MHz, 30MHz, 30MHz, 30MHz, 30MHz, 30MHz
LTEAFDD, 50 kHz, 5.05 MHz, 10.5 MHz, 15.00 MHz, 30 MHz, 40 MHz, 40 MHz,40 MHz, 40
Spectrum Analyzer Mode User's &Programmer's Reference 1631

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)