Chapter
4
Native Device Message Details
4-214
SEM:ATT/SEM:ATT?
Spectrum Emission Mask Attenuator
Function
This command sets Attenuator in measuring the reference power for
Spectrum Emission Mask measurement.
Command
SEM:ATT rel_ampl
SEM:ATT AUTO
Query
SEM:ATT?
Response
rel_ampl
No suffix code. Value is returned in dB units.
Parameter
rel_ampl
Attenuator value in measuring the reference
power
Range 0 to 60 dB
Resolution
[MS269xA]
2 dB
[MS2830A]
,
[MS2840A]
2 dB or 10 dB
Refer to “Table 2.4.2-3 Resolution of Input Attenuator” in the
MS2830A/MS2840A Signal Analyzer Operation Manual
(Spectrum Analyzer Function Operation)
.
Suffix code DB, dB is used when omitted.
AUTO
Sets attenuator value automatically.
Details
The setting range of this function is limited depending on the settings of
other parameters. Refer to
MS2690A/MS2691A/MS2692A Signal
Analyzer Operation Manual (Spectrum Analyzer Function Operation)
or
MS2830A/MS2840A Signal Analyzer Operation Manual (Spectrum
Analyzer Function Operation)
for details.
Example of Use
To set the attenuator in measuring the reference power to 10 dB.
SEM:ATT 10DB
SEM:ATT?
> 10.00