Keysight Technologies N5171B EXG, Руководство пользователя

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94 Keysight EXG and MXG X-Series Signal Generators User’s Guide
Optimize Performance
Using Internal Channel Correction (N5172B/82B Only)
Configure Internal Channel Correction
The following is a basic configuration for using the signal generator’s internal channel correction.
Refer to Figure 4-18 .
On the signal generator:
1. Set the center frequency:
Press Freq > 3 > GHz
2. Set the I/Q to internal (default):
Press I/Q > I/Q Source > Internal
3. Press I/Q to On
4. Perform internal channel correction:
Press More > Int Channel Correction Off On to On
Using User Corrections
Use a USB power sensor to perform a User Channel Corrections calibration to correct the response
of the DUT/poor matching network. And, verify the EVM of the DUT with the new User Channel
Corrections calibration.
Perform Enhanced Factory Calibration
For instruments with firmware prior to B.01.10, the Enhanced Factory Calibration must be run once
before you can turn on the I/Q Internal Channel Corrections (Factory Correction Type). Optionally,
this calibration procedure can be run anytime for new calibration data.
On the signal generator:
1. Press Utility > More > Service > I/Q Int Channel Correction Calibrations > Enhanced Factory
Calibration.
2. Follow the instructions on the signal generator display to complete the calibration.
There is an internal calibration routine (Enhanced Factory Calibration) that
collects correction data for both the baseband and RF magnitude and
phase errors over the entire RF frequency and power level range on any
unit with options 653, 655, 656, and 657. The internal channel correction
cannot be turned on until after the Enhanced Factory Calibration has been
executed once.
Depending on the equipment you use, the Enhanced Factory Calibration
may take up to four hours to complete.