Agilent Technologies E6000C User Manual page 46

OTDR Mode
Relative to both markers
Relative to current marker
General parameters
E6000C Mini-OTDR User's Guide, E0302
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The following parameters are measured between marker
A and marker B. The recorded values change when you
move either marker.
• A-B: the distance between the markers
• One of the following (selectable in the [A
menu):
– 2pt.L: 2-point loss between the markers. This is the
difference in power level between the marker points
– 2pt.Attn.: 2-point attenuation. This is the 2-point
loss per length unit.
– LSA-Attn.: LSA Attenuation. This is the least
square approximation for the fiber loss per length
unit between the markers.
– ORL: Optical Return Loss. This represents the
fraction of power reflected back to your Mini-OTDR.
The following parameters show values at the current
marker. The recorded values change when you move or
change the current marker.
• Ins.L. at A/B: the insertion loss of the event close
to the marker.
• Refl. at A/B: the return loss (in dB) of the event
close to the marker.
• Cum.L. to A/B: the cumulative loss between the
initial backscatter value interpolated to the start of the
fiber, and the marker point.
The following parameters are independent of the marker
position.
• Range: the start position and the measurement span,
selectable from the [S
Ranges are module-dependent.
1 Getting Started
NALYSIS
] menu. The available
ETTINGS
]
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