38
OLT-85/OLT-85P
6 L
OSS
T
EST
O
PERATION
G
ENERAL
INFORMATION
6
L
OSS
T
EST
O
PERATION
General information
The OLT-85 offers three different measurement modes.
•
Source Mode:
The instrument works as a laser source.
•
OPM Mode:
The instrument works as an optical power meter.
•
Loss Mode:
The internal laser source and powermeter are
locked. This mode is used to measure loss of a fiber loop or any
optical component connected to the loop.
The
Loss Mode
allows real time measurement (values and
changes are displayed while measuring) and can be run easily by
setting up just a view parameters. Furthermore, limits must
entered manually and only loopback measurement is possible.
If remote measurement is requested
Source/Powermeter
Mode
(see “Powermeter Operation” on page 44) is needed.
What operation mode to choose
Following table may help you to choose the right operation
mode for your measurement task.
To open the Loss Test:
J
Press the
[
C
]
key, select
and tap
Loss
.
You want to ...
Loss
Mode
Source/
Powerm
eter
Mode
... measure just loss with editing reference and limit
X
X
... measure margin
X
X
... measure loopback (e.g. Component Test)
X
... measure remote
X