Installation Manual

BEST PRACTICES
FS061
© Panduit Corp. 2018
For Technical Support: www.panduit.com/resources/install_maintain.asp
*MTP is a registered trademark of US Conec Ltd
Page 6 of 12
6.0 Acceptable Visual Criteria and Cleanliness Standards
Perform an end face inspection BEFORE the cleaning process using a fiber inspection scope at
200x magnification.
Defects should be noted, classified and dealt with by the inspector according to defect type,
size, severity and location per tables, below.
Tables 1 – 3: Visual Inspection Criteria at 200x Magnification for SM and MM Type Fiber
Table 1 – Visual requirements for single-mode PC polished connectors, RL  45 dB
a
Zone
Scratches
(maximum number of a given
dimension)
Defects
(maximum number of a given dimension)
A: core
0 μm to 25 μm
None
None
B: cladding
25 μm to 115 μm
No limit ≤ 3 μm
None > 3 μm
No limit < 2 μm
5 from 2 μm to 5 μm
None > 5 μm
C: adhesive
115 μm to 135 μm
No limit
No limit
D: contact
135 μm to 250 μm
No limit
None > 10 μm
a
For multiple-fibre rectangular-ferrule connectors only the requirements of Zone A and Zone B apply.
NOTE 1 There are no requirements for the area outside the contact zone. Cleaning loose debris beyond this region is
recommended good practice. This is of particular concern for multiple-fibre rectangular-ferrule connectors.
NOTE 2 For multiple-fibre rectangular-ferrule connectors, the criteria apply to all fibres in the array.
Table 2 – Visual requirements for single-mode angle polished (APC) connectors
a
Zone
Scratches
(maximum number of a given
dimension)
Defects
(maximum number of a given dimension)
A: core
0 μm to 25 μm
4 ≤ 3 μm
None
B: cladding
25 μm to 115 μm
No limit
No limit < 2 μm
5 from 2 μm to 5 μm
None > 5 μm
C: adhesive
115 μm to 135 μm
No limit
No limit
D: contact
135 μm to 250 μm
No limit
None > 10 μm
a
For multiple-fibre rectangular-ferrule connectors only the requirements of Zone A and Zone B apply.
NOTE 1 There are no requirements for the area outside the contact zone. Cleaning loose debris beyond this region is
recommended good practice. This is of particular concern for multiple-fibre rectangular-ferrule connectors.
NOTE 2 For multiple-fibre rectangular-ferrule connectors, the criteria apply to all fibres in the array.