DSX-600 CableAnalyzer
Technical Reference Handbook
132
Tap to see help for this screen.
The Value is the percentage of the signal reflected at the
cursor’s location.
The tester adjusts the values for insertion loss so that they show
the amplitudes of the signals at the sources of the reflections.
The margin is the difference between the measured value and
the 15% reflection limit. The margin is negative if the value
exceeds the limit.
The HDTDR plot for coaxial cable includes limit lines and a
PASS/FAIL result. The lines are fixed at 15%. The tester uses
these limits to give the test a PASS/FAIL result. Figure 62
shows a reflection at 31.3 m that exceeds the limit. The
reflection was caused by a 50 cable connected a 75 cable.
To zoom in and out, use the pinch, reverse-pinch, and double-
tap gestures on the touchscreen. You can also use the zoom
controls to change the magnification on the distance and
amplitude scales independently. See Figure 8 on page 21.
Note
For HDTDR plots for short cables such as patch
cords, the tester does not change the
magnification for the distance (horizontal) scale.
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