Viavi MPOL*-85, Руководство пользователя

Страница: 39 / 74

MPOLx-85 / MPOLx-85P 39
6 P
ERFORMING A
LOSS/LENGTH T
EST
R
EFERENCING
Referencing
Referencing methods
For referencing, only use the special test reference cords
contained as a standard assembly in your OLTS-85 test kit.
The reference method chosen will determine how many
connections are included in the loss limit.
Note: In the following procedures, test-reference jumper cables are
assumed to be compliant to IEC 61280-4-1/4-2 in good
condition and have no end-face damage or debris.
Disconnecting the connection at the transmitter of the local or
remote MPOLS-85 after a reference is performed invalidates the
reference. Since the connection at the receiver is not glass-to-
glass, it can be removed without affecting the reference. Any loss
associated with the test-reference jumper cables is automatically
considered in the test results.
Referencing cabling
1. In the [ TEST SETUP ] menu select the referencing method:
2. Establish proper cabling according to your settings.
If you have changed the referencing method:
If you have changed the referencing method you must reference
before you can start a measurement. In this case you can start
referencing from the measurement display.
J
In the LOSS/LENGTH measurement display tap the
referencing button (1).
1-chord 3-chord
1