Viavi OTDR 41 A Series, Руководство пользователя

Страница: 76 / 148

Chapter 3 Launching a reflectometry test and displaying results
Results display
58 User Manual 700MAN201 Rev. 002
Zoom function
The Zoom function is used to analyze part of the trace in greater detail.
The zoom is centered on the active cursor.
The position of the section of trace displayed with respect to the
complete trace is represented by a rectangle on the mini-trace at the top
left-hand corner of the screen, if the
Info bar is selected.
Click as many times as necessary on the Zoom key or to zoom in or out on
the trace.
Click on the Automatic Zoom key to swap from an automatic zoom to full trace
and vice-versa
Specific functions of the zoom with a touchscreen
With the touchscreen:
• maintain your finger pressed on screen and shift the traces horizontally or verti-
cally
• position your finger on a cursor and move it on trace maintaining your finger
pressed and moving it toward left or right
• once a zoom is performed, double click on the zoomed zone to undo the zoom
Zooming on the different events in succession
1 Set the cursor on one event
2 Define a zoom on this event.
3 Click on another event in the results table.
The cursor is automatically positioned on this event, which is always centered on
the screen, keeping the zoom level selected.
Shift function (Expert OTDR only)
The Shift function is used to displace the displayed section of the trace by directly
clicking on the touchscreen.
The horizontal shift is performed maintaining the point of intersection between the trace
and the selected cursor at the same level, scrolling the trace horizontally while following
it vertically, so that it never goes off the screen.
To use this function:
OTDR New IHM rev002.book Page 58 Jeudi, 5. mai 2022 11:50 11