Fft if gain – Agilent Technologies Signal Analyzer N9030a User Manual

Page 842

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6  RLC Swept SA Measurement Front-Panel & SCPI Reference
Meas Setup

Example

IF:GAIN:SWEP:AUTO ON

Preset

ON

Initial S/W Revision

Prior to A.02.00

Low Gain (Best for Large Signals)

Forces Swept IF Gain to be off.

Key Path

Meas setup, ADC Ranging

Example

IF:GAIN:SWEP OFF

State Saved

Saved in instrument state.

Readback

Low Gain

Initial S/W Revision

Prior to A.02.00

High Gain (Best Noise Level)

Forces Swept IF Gain to be on.

Key Path

Meas setup, ADC Ranging

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).

State Saved

Saved in instrument state.

Readback

High Gain

Initial S/W Revision

Prior to A.02.00

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 best signal to noise ratio.
You can specify the range for the best FFT speed, and optimize for noise or for large signals.

When the sweep type is FFT and this function is in Autorange, the IF Gain is set ON initially for
each chunk of data. The data is then acquired. If the IF overloads, then the IF Gain is set OFF
and the data is re-acquired. Because of this operation, the Auto setting uses more measurement
time as the instrument checks/resets its range. You can get faster measurement speed by forcing

842

Remote Language Compatibility Measurement Application Reference

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