Viavi ONX-220, Руководство пользователя

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ONX-220 User's Guide
22135173, Rev. 000 June 2020 191
Chapter 11 Test Results
Changing the display
The controls at the bottom of the screen are used to more closely analyze the detected
reflection by expanding or panning to a particular portion of the detected signal.
Select the
Display button to rotate to landscape or portrait view, highlight reflections, and
show delta markers.
Zooming
To activate the Zoom feature, select the Zoom button.
The signal can now be expanded in the vertical and/or horizontal axes using the sliders.
Panning
To activate the Pan feature, select the Pan button.
Adjusting the sliders will cause the display to move in the horizontal or vertical direction
without changing the level of magnification.
Changing Cable Type
Select the Configure button to change the cable type or create your own.
y
Velocity of Propagation (Vop) – Affects the calculated distance value
y
Cable Loss – Affects the calculated return loss value
Moving the markers
To move the onscreen markers, simply drag or use the directional arrow buttons.
y
Any reflection that has been automatically detected, including the end of the cable
will be shown graphically with a green vertical line.
y
Placing a single or delta marker at any automatically detected event location will
show the distance and the return loss amplitude of the fault.
y
Use a single marker to see the distance to any point on the graph.
y
Delta markers can also be used to see distance differences between any 2 points on
the graph.
y
Return loss will also be displayed for any automatically detected events that are
selected by the markers.
Adding a second marker
To add a second marker for delta measurements, just double tap the screen and it will
appear. Drag to the desired location and the displayed measurements will automatically
update to delta intervals.