3 Spectrum Analyzer Mode
3.9 SEM Measurement
Stop Freq
Same as "Stop Freq" on page 1635 under Offset (Bandwidth).
Abs Start
Sets the absolute power level limit at the start frequency for the selected offset. The
absolute power level limit ranges from –200 to +50 dBm.
The fail condition for each offset channel is set remotely by
[:SENSe]:SEMask:OFFSet[n][:OUTer]:LIST:TEST.
You can turn off (not use) specific offset channels remotely with
[:SENSe]:SEMask:OFFSet[n][:OUTer]:LIST:STATe.
The query returns values currently set to the absolute power test limits.
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
remain unchanged. The query returns 14 values for WLAN Mode, or 12 values for
other Modes.
Remote
Command
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:STARt:ABSolute <real>, …
[:SENSe]:SEMask:OFFSet[1]|2[:OUTer]:LIST:STARt:ABSolute?
Example
:SEM:OFFS2:LIST:STAR:ABS -12.50 dBm, -12.50 dBm, -24.50 dBm, -11.50 dBm, -
11.50 dBm, -11.50 dBm
:SEM:OFFS2:LIST:STAR:ABS?
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
Preset When the max number of offsets is 6:
Mode Values
SA -14.00 dBm , -14.00 dBm , -26.00 dBm , -13.00 dBm , -13.00 dBm, -13.00 dBm
WCDMA -12.50 dBm, -12.50 dBm, -24.50 dBm, -11.50 dBm, -11.50 dBm, -11.50 dBm|-
69.6 dBm, -54.3 dBm, -54.3 dBm, -54.3 dBm, -54.3 dBm, -54.3 dBm
LTE, LTETDD -5.5 dBm, -12.5 dBm, -15.0 dBm, -15.0 dBm, -15.0 dBm, -15.0 dBm|-13.5 dBm,
-8.5 dBm, -11.5 dBm, -23.5 dBm, -23.5 dBm, -23.5 dBm
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
Spectrum Analyzer Mode User's &Programmer's Reference 1649
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