YOKOGAWA AQ1215A User Manual

2-20
IM AQ1210-01EN
Cumulative Loss Type
You can select the cumulative loss measurement method from the following three types in the event
analysis settings.
S
▲
Measurement
reference point
▲
1
Event No. 1
Type 1 (without distance reference)
This method does not include the near-end
reflection in the cumulate loss value. The loss
from measurement start point S to the start
point of event No. 1 is measured.
Loss
Y2
▲
1
Event No. 1
Type 1 (with distance reference)
This method includes the near-end reflection in the
cumulate loss value. The distance reference is set to the
start point of the near-end reflection. The loss from distance
reference R to the start point of event No. 1 is measured.
Loss
Distance reference R
Distance reference R
Distance reference R
S
▲
Measurement
reference point
▲
1
Event No. 1
Type 2 (without distance reference)
This method does not include the near-end
reflection in the cumulate loss value. The loss
is measured using the same method as type
1 (without distance reference).
Loss
▲
1
Event No. 1
Type 2 (with distance reference)
This method does not include the near-end reflection in the
cumulate loss value. The distance reference is set to the
start point of the near-end reflection. The loss from
near-end reflection end point Y2 to the start point of event
No. 1 is measured.
Loss
S
▲
Measurement
reference point
▲
1
Event No. 1
Type 3 (without distance reference)
This method includes the near-end reflection
in the cumulate loss value. The loss is
measured from where the approximation line
between measurement start point S and
event No. 1 intersects distance 0 km to the
start point of event No. 1.
Loss
Distance 0 km
S
▲
Measurement
reference point
▲
1
Event No. 1
Type 3 (with distance reference)
This method includes the near-end reflection in the cumulate
loss value. The distance reference is set to the start point of
the near-end reflection. The loss is measured from the
intersection of the approximation line between distance
reference R and event No. 1 and the start point of event No. 1.
Loss
Event Fix Mode
Event positions can be fixed. Fixed events are handled as master events. You can configure the
instrument so that in subsequent event analysis only master events are analyzed.
How the events that are detected at positions other than the master event positions are displayed
varies depending on the Event Fix Mode as follows:
2.3 Display (OTDR) Conditions

YOKOGAWA AQ1215A Specifications

General

Brand	YOKOGAWA
Model	AQ1215A
Category	Test Equipment
Language	English