EXFO MaxTester 635 - Manual (Page 80)

Setting Up Copper Tests
72 MAX-635
Test Lead Compensation
Test Lead Compensation
Test lead compensation is required for some of the
copper tests so as not to affect data accuracy, since
test lead characteristics have some impact on copper
test results (mainly resistance, capacitance, and TDR
tests). Test lead characteristics vary with respect to
cable temperature.Refer to Cable Connections on
page 6 on how to connect the leads before starting
compensation.
The Test Lead Compensation routine allows you to
perform resistance and capacitance compensation.
The page displays the Pass/Fail status of the last
compensation done.
Note: Always perform a test lead compensation if the test leads have recently
been removed or replaced.

Date and Time identifies when the last compensation was done or
application installation time.

Start Compensation button allows you to start the Test Lead
Compensation by overwriting the current test lead characteristics.
To perform a test lead compensation:
1. Connect the cables to the unit, leave all test leads open, and press
to start compensation.
2. Follow the on-screen dialogue boxes for next steps.