EXFO MaxTester 635G User Manual page 265

Use Auto Scale to easily capture and see the detected Largest Event
applying automatic scaling of the amplitude of the trace in the vertical
axis.
Pulse Width is a non-editable value in Auto TDR but can be selected

from a given list in Manual and xTalk TDR.
Dual Trace Offset is a configurable offset parameter for the secondary

trace, with a range of -100 % to +100 %.
Note: If the loaded secondary trace offset = 0, then the primary and secondary
traces will overlap.
VOP allows you to change the velocity of propagation value for the

cable as defined in m/μsec (meters per microsecond), a ratio, or
percentage of the speed of light.
Current Trace (available only in Manual TDR)

allows you to turn on/off Live and Peak traces
and calculates the Differential trace. Select
one of the following:



Copper and G.fast/VDSL2/ADSL2+ Multi-play Test Set
Live turns Peak Hold off clearing
previously collected minimum/maximum
measurement values. This is the default.
Live and Peak turns Peak Hold on and
collects minimum/maximum
measurement values, displaying all
3 traces.
Peak Only turns Peak Hold on displaying
only Peak traces with no offset.
TDR
Continuous
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