Insertion Loss Measurement In A-B Direction And B-A Direction - OptoTest OP831 Instruction Manual

OP831

Insertion Loss Measurement in A-B Direction and B-A direction

Connect the cable to be tested as shown:
OP831 Bidirectional Insertion Loss
LED
Laser
OPM
The display of the A-B measurement will show the insertion loss of the connected cable.
To measure and display the insertion loss at the other wavelength (if available) use the
lambda button and switch the wavelength.
To measure the insertion loss in the other direction use the mode button to switch to
B-A mode. The display of the B-A measurement will show the insertion loss of the
connected cable. To measure and display the insertion loss at the other wavelength (if
available) use the wavelength button and switch the wavelength.
Other cables can be measured by simply connecting them to the two reference cables
as shown above. There is no need for a repeated reference cycle unless the reference
cables have been changed. If a long time (hours) has elapsed since the last reference
cycle or the measurement procedure requires a frequent referencing.
Please note that cleaning the connectors before each measurement should be standard
practice.
2x2 switch
13 of 15
A
reference
cables
B
cable
under
test