Softing WireXpert 4500 Fiber MPO, Руководство пользователя

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Test Procedure
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The following step is optional but recommended. Performing the following step will allow LC to be
used in either orientation.
9. Interchange the ends of LC and repeat steps 1 to 8.
5.4.2 Two-cords set reference method
1. Retaining the same setup, disconnect the pinned end of RC from the coupler.
2. Do not disconnect LC from the REMOTE unit.
3. Connect a pinned-to-pinned AC to the coupler to the unpinned end of LC.
4. Connect the cabling under test to RC and AC using couplers.
5. Press the [AUTOTEST] button to begin AUTOTEST.
Acceptable loss limit
As per standards acceptable loss may be established in a number of ways, for example,
based on customer’s testing requirements, specifications claimed by manufacturers etc.
It is to the user to select a valid acceptable loss limit.
It is not recommended to set the acceptance loss as high as the minimum performance
level, i.e., maximum allowable connection loss (0.75dB).
It is recommended to determine the value based on the following table:
Termination 1 Termination 2 Attenuation Requirement
Reference Grade Reference Grade ≤
0.1dB
Reference Grade Standard Grade ≤
0.3dB
Standard Grade Standard Grade ≤
0.5dB
For example, in the diagram below, all the components used are of reference grade.
The user can have acceptable loss limit is 0.35dB (2 x 0.1dB per con 0.15dB for
other loss contributors).
It is recommended that all the cords used should be of reference grade to reduce the
measurement uncertainty.