EXFO VDSL2 - Manual (Page 35)

Auto Tests
Copper, VDSL2, ADSL2+ and IP Triple-Play Test Set 27
Configuring CQ Auto Tests
³
VF Impulse Noise measures the random occurrences of energy spikes
in the voice frequency range that have random amplitude and spectral
content.
To select tests:
1. Press the up/down arrow keys to highlight a desired test.
2. Press to toggle between Enable and Disable.
3. Select other tests as required.