Anritsu FAQs
On my S331D I performed a calibration in the return loss mode and took my measurement. I then switched to DTF mode and the calibration on turned to off.
Turn the unit off. Hold the "ESCAPE" key down and turn unit on. Let go of the "ESCAPE" key as soon as the screen turns on. Set up your test in return loss mode and perform a calibration. Perform your test and then go to the DTF mode. Verify this fixed the issue.
