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Chapter 2 Establishing references for Loss & ORL measurements, without Switch
Activating the function
Activating the function
1
Press the HOME button.
2
Select the icon FiberComplete (FCOMP)
(FCOMP-PRO)
Establishing References
To get a meaningful measurement, the light sources and the two launch/test cords used
for the measurement have to be referenced (zeroed out). The references are valid for all
fibers that will be tested during the day without disconnecting the test cords from the test
port. If, at anytime, the test cords are disconnected from the test instruments and/or have
been contaminated by dirt or dust, the test cords have to be re-inspected and refer-
encing stage has to be redone.
Reference methods for insertion loss and ORL testing
Three Referencing methods are available.
•
Factory Ref.: fastest process, higher loss uncertainties
•
Loopback Ref.: more accurate than Factory Ref., less accurate than Side by
Side
•
Side by side Ref.: most accurate method, both test sets must be at the same
location during the referencing process.
Table 5
Reference methods for Insertion Loss and ORL Testing
Setup requirement
Description
14
.
IL Loopback Reference
Method
No specific requirement
Each unit is performing its own
IL reference, with its module port
source connected to the main-
frame power-meter.
User Manual
or FiberComplete PRO
IL Side-by-side Two -Cord
Reference method
Units shall be at the same location
for references
Each unit is performing its own IL
reference, and units are con-
nected using two test cords and a
bulkhead adapter.
700MAN203 Rev. 007
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