Return Loss - EXFO MaxTester 635G User Manual

Frequency Tests

Return Loss

Return Loss
The Return Loss test allows you to measure the loss of power in the signal
returned/reflected by a discontinuity in a transmission line. This
discontinuity or impedance variation can be a mismatch with the
terminating load or with a device inserted in the line.
Single Frequency
The Single Frequency test is continuous, and allows
you to configure parameters and change values
during the measurement. The page provides a Return
Loss result value in dB, and pass/fail status.
Current Group is the current test group name, for

example Frequency Tests.
Current Test displays the test being measured.

Here you can switch to another Frequency test
from the given list. However, this action will
terminate the ongoing measurement test.
Frequency allows you to set the frequency value

for the Return Loss test.
Frequency Step lists a choice of frequency step values.

Termination Resistance lists a choice of resistance values for the

termination of the signal.
Threshold Settings button opens a new page that allows you to set

Return Loss thresholds for the transmission.
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