Zoom Function - Viavi E4123MM User Manual

Click on the Lock icon in order to select both cursors and
move it at the same time on the trace, keeping the current
space between them:

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
the trace.
Click on the Automatic Zoom key
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
The Shift function is used to displace the displayed section of the trace by directly
clicking on the touchscreen.
User Manual
Chapter 2 SMART TEST function
to swap from an automatic zoom to full trace
700MAN201 Rev. 004
Results display
click
or to zoom in or out on
25