EXFO FTB-635 Wideband Copper and DSL Test Module - Manual (Page 109)

Auto Test
Copper and xDSL Tests 101
POTS Auto Test
Setting Threshold Values
The Test Thresholds page allows you to set the POTS Auto Test threshold
values for the combination of multiple tests.
To set the Threshold values:
1. From the Copper main menu Test Groups, select Auto Test
.
2. From the Tests menu, select POTS Auto Test.
3. Tap Edit Thresholds button to open the Test Thresholds page.
4. Edit the Threshold values as required.
5. Tap Close to confirm and exit the page.
The page allows you to set the following parameters:

Loop DC Current (T-R) sets the DC current value for the T-R wire pair.

Loss (T-R) sets the loss value for the T-R wire pair.

Power Influence sets the power influence value for the test.

VF Noise sets the level of voice frequency noise to be used.

Balance sets the balance value for active mode.