Setting the IF Equalizer

Setting the IF Equalizer
IF Equalizer allows you to control how you use the test set's in-built IF Flatness Equalizer. The IF Equalizer reduces the noise levels of your measurements, typically resulting in a CDP noise floor reduction of 2 or 3 dB, and an EVM noise reduction of about one percentage point.

NOTE: The noise reduction effect of the IF Equalizer is not immediate, so it is best to allow your test set to settle by performing several sweeps first.

NOTE: Agilent Technologies recommends that you set Meas Time to Slow. If Meas Time is set to Medium or to Fast, there is insufficient time to collect enough data to generate an accurate equalization estimate. Press [Setup], then [Meas Time] to set your measurement speed.

NOTE: Even with Meas Time set to Slow, you may see some instability for a short time until the test instrument has settled.

If you set IF Equalizer to Run, the data from the current data capture is used to generate an approximate correction for any IF slope. This correction is repeatedly averaged to remove the effects of noise.
If you set IF Equalizer to Hold, the correction applied is that from the last time Run mode was used. The test set will not update or adjust the correction being applied.
If you have not yet performed a measurement with IF Equalizer Status set to Run, there will be no correction data present in the test set, and no correction will be applied.
When IF Equalizer is Off, no attempt is made to correct any flatness error inherent in the test set.

Step
Notes

1
[Setup]

2
[IF Eq Status]
Each time you press this softkey, the selected option changes.
You can choose between Off (no flatness correction is applied), Run (flatness correction is continually revised and updated) and Hold (a fixed flatness correction is applied).


	Step	Notes
1	[Setup]
2	[IF Eq Status]	Each time you press this softkey, the selected option changes. You can choose between Off (no flatness correction is applied), Run (flatness correction is continually revised and updated) and Hold (a fixed flatness correction is applied).