Keysight M9421A - 3.5.3.2 Attenuation

3 WLAN Mode
3.5 Spurious Emissions Measurement
Remote
Command
:DISPlay:SPURious:WINDow[1]:TRACe:Y[:SCALe]:COUPle 0 | 1 | OFF | ON
:DISPlay:SPURious:WINDow[1]:TRACe:Y[:SCALe]:COUPle?
Example
:DISP:SPUR:WIND:TRAC:Y:COUP OFF
:DISP:SPUR:WIND:TRAC:Y:COUP?
Couplings When Auto Scaling is ON, and the Restart front-panel key is pressed, this function automatically sets
the scale per division to 10 dB and determines the reference values based on the measurement results
When you change the value of "Scale/Div" on page 680, "Ref Value" on page 680 or "Scale Range" on
page 681, Auto Scaling automatically changes to OFF
When Auto Scaling is OFF, the measurement uses the current reference level settings
When Auto Scaling is ON, the instrument automatically sets the reference level such that the absolute
limit is positioned two divisions down from the top of the display. This is the most useful setting when
searching for spurs. The algorithm used for determining the ref level is Ref Level = Absolute Limit + (2 *
Scale/Div). All other reference level settings are left as the current base instrument settings
Preset 1
State Saved Saved in instrument state
Range
OFF|ON
Backwards
Compatibility
SCPI
[:SENSe]:SPURious:POWer[:RF]:RANGe:AUTO
:DISPlay:SPURious:VIEW[1]:WINDow[1]:TRACe:Y[:SCALe]:COUPle
3.5.3.2 Attenuation
Controls the attenuator functions and interactions between the attenuation system
components.
There are two attenuator configurations in the X-Series. One is a Dual-Attenuator
configuration consisting of a mechanical attenuator and an optional electronic
attenuator. The other configuration uses a single attenuator with combined
mechanical and electronic sections that controls all the attenuation functions.
Different models in the X-Series come with different configurations.
–
See "Dual-Attenuator Configurations" on page 683
–
See "Single-Attenuator Configuration" on page 683
Most attenuation settings are the same for all measurements – they do not change
as you change measurements. Settings like these are called “Meas Global” and are
unaffected by Meas Preset.
Only available when the hardware set includes an input attenuator, which is
typically only the case for Keysight’s benchtop instruments. For example, this tab
does not appear in VXT models M9420A/10A/11A/15A/16A,
M9410E/11E/15E/16E, nor in UXM. In UXM, all Attenuation and Range settings are
disabled, as the expected input power level is handled by the Call Processing App
that drives the DUT power control.
WLAN Mode User's &Programmer's Reference 682