Fluke DSX-600 Technical Reference Handbook page 157

How to Use the Measurement Cursor on the HDTDR and HDTDX Plot
The green measurement bar goes from the start point to the

end point of your measurement.
 To start another measurement, tap UNMARK. If UNMARK does
not show, tap the yellow circle (
Chapter 6: Diagnose Copper Test Failures
).

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