3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
total input attenuation is 2 dB or less, the preamp is on, the start frequency is 10 MHz or more, and
the stop frequency is 3.6 GHz or less and the FFT IF Gain is autocoupled, or manually set to Autorange,
or manually set to High. Under all other circumstances, set the Swept IF Gain to Low (Off)
If the sweep type is Swept, the start frequency of the instrument is less than 10 MHz, and you put
Swept IF Gain in Manual On, a warning condition is generated and remains in effect as long as this
condition exists. The warning message is about a possible IF overload
As with most parameters with an AUTO state, "Auto Couple" on page 2017 sets it to Auto, and setting
any specific value (for example on or off) will set the AUTO state to false
Preset Auto after a Preset, which yields Off unless the Preamp is on
Auto and Off after Meas Preset
State Saved Saved in instrument state
Range Low Gain | High Gain
Annunciation Low | High
Found in the Meas Bar under IF Gain when in Swept sweep type
When not in Auto, label changes to #IF Gain
Auto Function
Remote Command
[:SENSe]:IF:GAIN:SWEPt:AUTO[:STATe] OFF | ON | 0 | 1
[:SENSe]:IF:GAIN:SWEPt:AUTO[:STATe]?
Example
:IF:GAIN:SWEP:AUTO ON
Preset
ON
Auto
Activates the auto rules for Swept IF Gain.
Low Gain (Best for Large Signals)
Forces Swept IF Gain to be off.
Example
:IF:GAIN:SWEP OFF
High Gain (Best Noise Level)
Example
:IF:GAIN:SWEP ON
Dependencies The High setting for Swept IF Gain is grayed-out when FFT IF Gain is manually set to Low (not when
Low is chosen by the auto-rules)
FFT IF Gain
Accesses the keys to set the ranging in the digital IF when doing FFT sweeps. When
in Autorange mode, the IF checks its range once for every FFT chunk, to provide the
Spectrum Analyzer Mode User's &Programmer's Reference 441
To Next Page
Loading...
Need help?
General
