Keysight x-series User Manual

3 Spectrum Analyzer Mode
3.4 Occupied BW Measurement
Annotation The current value for Total Atten is displayed in the Measurement Bar at the top of the display. A value
appears for Electronic Attenuation only if the Electronic Attenuator is enabled. The annotation appears
as:
Atten: <total>dB (e<elec>)
The e letter is in amber in Single-Attenuator configurations
For example:
Dual-Attenuator configuration:
Atten: 24dB (e14)
Indicating the total attenuation is at 24dB and the electronic attenuation is at 14dB
Single-Attenuator configuration:
A: 24dB (e14)
Indicating the total attenuation is at 24dB and the “soft” attenuation is at 14dB (see below for
definition of “soft” attenuation)
When in Manual, a # sign appears in front of Atten in the annotation
Auto Function
Remote Command
[:SENSe]:POWer[:RF]:ATTenuation:AUTO OFF | ON | 0 | 1
[:SENSe]:POWer[:RF]:ATTenuation:AUTO?
Example Turn Auto Mech AttenON:
:POW:ATT:AUTO ON
Dependencies :POW:ATT:AUTO is only available in measurements that support Auto, such as Swept SA
Preset
ON
Attenuator Configurations and Auto/Man
As described under "Attenuation" on page 1954, there are two distinct attenuator
configurations available in the X-Series, the Single Attenuator and Dual-Attenuator
configurations.
In Dual-Attenuator configurations, we have mechanical attenuation and electronic
attenuation, and current total attenuation is the sum of electronic + mechanical
attenuation.
In Single-Attenuator configurations, we refer to the attenuation set using "Mech
Atten" on page 733 (or :POW:ATT) as the “main” attenuation; and the attenuation
that is set by :POW:EATT as the “soft” attenuation (:POW:EATT is honored even in
the Single-Attenuator configuration, for compatibility purposes). Then current total
attenuation is the sum of main + soft attenuation.
See "Elec Atten" on page 1960 for more about “soft” attenuation.
NOTE
In some measurements, the Mech Atten control has an Auto/Man function. In
these measurements, an Auto/Man switch is shown on the Mech Atten control:
Spectrum Analyzer Mode User's &Programmer's Reference 735

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)