3 WLAN Mode
3.9 Spectral Flatness Measurement
Remote Command
[:SENSe]:FLATness:IF:GAIN[:STATe] ON | OFF | 1 | 0
[:SENSe]:FLATness:IF:GAIN[:STATe]?
Example
:FLAT:IF:GAIN OFF
:FLAT:IF:GAIN?
Notes Where ON = high gain
OFF = low gain
This only applies to the RF input. It does not apply to baseband I/Q input
Dependencies This control does not appear in UXM
Couplings When either the auto attenuation works (for example, with the electrical attenuator) or optimize
mechanical attenuator range is requested, the IF Gain setting is changed according to the following
rule
‘Auto’ sets IF Gain to ‘High Gain’ under any of the following conditions: the input attenuator is set to 0
dB, the preamp is turned on, or the Max Mixer Level is −20 dBm or lower. For other settings, ‘Auto”
sets IF Gain to ‘Low Gain’
Preset OFF
State Saved Yes
Range Low Gain | High Gain
Spectrum
Sets a spectrum to either normal or to inverted for demodulation related
measurements. If set to INVert, the upper and lower spectrums are swapped.
The invert function conjugates the spectrum, which is equivalent to taking the
negative of the quadrature component in demodulation. The correct setting (Normal
or Invert) depends on whether the signal at the input of the instrument has a high or
a low side mix.
Remote Command
:CALCulate:FLATness:SPECtrum INVert | NORMal
:CALCulate:FLATness:SPECtrum?
Example
:CALC:FLAT:SPEC INV
:CALC:FLAT:SPEC?
Preset
NORMal
State Saved Saved in instrument state
Range Normal | Invert
3.9.9 Sweep
The Sweep key contains controls which allow you to control the sweep and
measurement functions of the analyzer, such as the sweep or measurement time
WLAN Mode User's &Programmer's Reference 1528
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