3 WLAN Mode
3.9 Spectral Flatness Measurement
RF Center Freq
SCPI command for specifying the RF Center Frequency. This command will set the
Center Frequency to be used when the RF input is selected, even if the RF input is
not the input that is selected at the time the command is sent. Note that the Center
Freq function in the Frequency menu on the front panel always applies to the
currently selected input.
Remote Command
[:SENSe]:FREQuency:RF:CENTer <freq>
[:SENSe]:FREQuency:RF:CENTer?
Example
:FREQ:RF:CENT 30 MHz
:FREQ:RF:CENT?
Notes This command is the same in all modes, but the parameter is Measurement Global. So the value is
independent in each mode and common across all the measurements in the mode.
Dependencies If the electronic/soft attenuator is enabled, any attempt to set Center Frequency such that the Stop
Frequency would be >3.6 GHz fails and results in an advisory message. If the equivalent SCPI
command is sent, this same message is generated as part of a “-221, Settings conflict” warning.
If Source Mode is set to Tracking, and the Max or Min Center Freq is therefore limited by the limits of
the source, a warning message is generated, “Data out of range; clipped to source max/min” if these
limits are exceeded. Note that for an external source, these limits can be affected by the settings of
Source Numerator, Source Denominator, and Power Sweep.
Preset See table above
State Saved Saved in instrument state.
Min -79.999995 MHz, unless Source Mode is set to Tracking, in which case it is limited by the minimum
frequency of the Source
Max See table above. Basically instrument maximum frequency - 5 Hz. Note that, if the Source Mode is set
to Tracking, the effective instrument maximum frequency may be limited by the source maximum
frequency.
If the knob or step keys are being used, also depends on the value of the other three interdependent
parameters Span, Start Frequency and Stop Frequency.
Ext Mix Center Freq
SCPI command for specifying the External Mixer Center Frequency. This command
will set the Center Frequency to be used when the External Mixer is selected, even if
the External Mixer input is not the input which is selected at the time the command
is sent. Note that the Center Freq function in the Frequency menu on the front panel
always applies to the currently selected input.
Remote
Command
[:SENSe]:FREQuency:EMIXer:CENTer <freq>
[:SENSe]:FREQuency:EMIXer:CENTer?
Example
:FREQ:EMIX:CENT 60 GHz
WLAN Mode User's &Programmer's Reference 1474
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