Agilent Technologies E6000C - Page 234

Test II. Event Deadzone D Single-Mode/Multimode Module Performance Tests
E6000C Mini-OTDR User’s Guide, E0302
233
of the reflection. Set the measurement span to start
position+2 km.
[S
ETTINGS}<RANGE><RANGE INPUT...>. Use Cursor keys
to specify Start and Span. Confirm with OK.
NOTE The start position should be a little before the front edge
of the reflection. For example, if the reflection is at 2.2
km, use a start position of 2 km.
Start measurement 12 Run the measurement.
Run/Stop
Position markers 13 Position marker A on top of the first reflection on the
trace.
U
P (A/B) until only A is highlighted. Use LEFT/RIGHT
keys to set marker A
14 Position marker B about 5 m right from marker A.
U
P (A/B) until only B is highlighted. Use LEFT/RIGHT
keys to set marker B.
U
P (A/B) until only A is highlighted. Use LEFT/RIGHT
keys. Use D
OWN (Around A) to get better resolution.
Set scales and offset 15 Set the y-axis scale to 0.5 dB/Div and the x-axis to 0.5
m/Div.
{<==> Z
OOM} → 0.5 m/Div and [⇑ ⇓ Zoom] → 0.5 dB/
Div. Close by OK.
16 Select offset, and move the peak of the reflection 3
divisions (1.5 dB) above the center of the graph.
[V
IEW}<ADJUST V-OFFSET>. Use LEFT/RIGHT keys. Press
S
ELECT to Confirm.
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