3 Sample Sessions: Measuring a Trace How to Run a Manual Measurement
88 E6000C Mini-OTDR User’s Guide, E0302
How to Scan a Trace for Events
If you have selected <AUTO SCAN> from the [VIEW] menu,
the OTDR automatically scans the trace for events when
you run a measurement. You can view the events by
selecting [V
IEW]<EVENT TABLE> or [VIEW]<EVENT BAR>.
Scan Trace You can scan an existing trace for Events as follows:
1 Select [A
NALYSIS]<SCANTRACE>.
The current trace is scanned for Events, which are
entered in the Event Bar and Event Table.
Why can’t I see any Events ? If you do not see Events that you expect to appear, it may
be for one of the following reasons:
• The Events are too close together.
Try shortening the pulse width and trying again. If you
still cannot find the Event, tr y measuring the fiber from
the other end.
• The Signal to Noise Ration (SNR) is too small.
Try increasing the Averaging Time and try again.
• One of your user settings is incorrect.
Check your user settings (for example, the refractive
index) and try again.
If you still do not see the Event that you expect, you can
add one manually. See “How to Add a Reflective Event”
on page 111 or “How to Add a Non-Reflective Event” on
page 119.
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