User`s guide

Test I. Dynamic Range D Single-Mode/Multimode Module Performance Tests
E6000C Mini-OTDR User’s Guide, E0302
227
Figure 76 Dynamic Range Test: Full Trace View
Position markers 6 Use Cursor keys to position marker A and B at 2.5 km
±
0.5
km
7 Select marker B
U
P (A/B) until only B is highlighted.
Zoom 8 Zoom to 0.5 dB/Div and 500m/Div
[Z
OOM], then use cursors.
The current zooming figures are written below the
trace to the left and right hand side.
Offset the trace 9 Select offset
[V
IEW]<ADJUST V-OFFSET>
10 Offset the trace until the extrapolated beginning of the
backscatter is on a horizontal grid line. The
extrapolated beginning of the backscatter is the level
that the backscatter would reach if it was continued