Fluke OF-500 OptiFiber, Техническое справочное руководство

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Using the OTDR
Comparing OTDR Traces
3
3-43
A
The traces being compared. The reference trace is first
shown in gray behind the comparison trace.
B
The trace shown in black in the foreground. To switch
the positions of the traces, press
A
Next Trace .
C
The wavelength and End setting for the foreground
trace.
To switch between wavelengths for either trace, press
F
; then select a wavelength for a trace.
D
Switches the foreground and background traces.
E
Displays the event table.
F
Moves the cursor to the next event on the trace. If you
use
K
to move the cursor,
C
changes to Previous
Event and moves the cursor to the previous event.
G
Sets and clears the measurement cursor. See “Using the
Measurement Cursor” on page 3-28.
H
Changes the softkey and arrow key functions. The
navigational cue above the softkey labels indicates the
arrow key functions:
O
Pan,
P
Cursor : Use
KN
to move the cursor on the
trace. Use
LM
to move both traces up and down if
the vertical zoom is greater than 1:1.
Q
Zoom : Use
KN
and
LM
to magnify both traces
vertically and horizontally.
Q
Move Trace: Use
KN
and
LM
to move the
foreground trace vertically and horizontally.
Use
C
Next Event/Previous Event to align the
foreground trace with events on the background trace.
Figure 3-16. Comparing OTDR Traces (cont.)