Exfo FTB-700 for FTB-1 Manual de usuario descargar pdf (Pagina 128)

Analyzing Traces and Events

120 FTB-700 Series

Using Zoom Controls

 When you manually zoom in or out on a trace, the application will

apply the new zoom factor and marker positions to the other traces

(wavelengths) of a same file and on the reference file, if applicable.

Both the zoom factor and marker positions will be saved along with the

trace (same settings for all wavelengths).

 When you zoom in or out on the selected event, the application keeps

the zoom on this event until you select another event or change zoom

or marker positions (via the Measure tab). You can select a different

event for each wavelength (for example, event 2 at 1310 nm and

event 5 at 1550 nm). The selected events will be saved along with the

trace.

Note: In Template mode, the zoom factor and marker positions correspond to

those of the reference trace.

If you want the application to automatically zoom on the defined fiber

span, see Automatically Zooming in on the Fiber Span on page 118.

To view specific portions of the graph:

 You can define which portion of the graph will be visible by selecting

the button and dragging the graph with the stylus or

your finger.

This could be useful, for example, if you want to zoom in on events

located outside the defined fiber span.

 The button is the zoom selector. It allows you to select whether

the zooming will be performed according to the horizontal axis, the

vertical axis, or both.

Press and hold this button to select the zooming direction in the menu.

Then, define the zoom area with the stylus or your finger (a rectangle

with dotted lines will appear to help you define the area). Once you

release the stylus, the application automatically zooms in on the graph

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Exfo FTB-700 for FTB-1 Manual de usuario Pagina 128