Name: 
 

Fiber U Reference Cable Minicourse



True/False
Indicate whether the statement is true or false.
 

 1. 

Dust caps are called “dust caps” because they often contain dust, so once removed, the fiber optic connector needs cleaning before use.
 

 2. 

Mode conditioning for multimode fiber testing is done on the launch cable.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 3. 

An insertion loss test uses a light source, power meter, mating adapters and ______ reference cable(s).
a.
1
b.
2
c.
3
d.
None
 

 4. 

An OTDR test that tests the installed cable plant including connectors on both ends needs ______ reference cable(s).
a.
1
b.
2
c.
3
d.
None
 

 5. 

An OTDR test needs  ______ reference cable(s) to test splices as the cable plant is being spliced during installation.
a.
1
b.
2
c.
3
d.
None
 

 6. 

Multimode fiber in the reference cable must match the fiber type/size of the fiber in the cable plant under test because mismatched fibers _________.
a.
Can cause high loss when transmitting from 62.5/125 micron fiber into 50/125 fiber
b.
Can cause high loss when transmitting from the core of 50/125 fiber into 62.5/125 fiber
c.
Like OM3 and OM4 fibers have different core diameters
d.
Have connectors that cannot mate in regular mating adapters
 

 7. 

Reference quality cables are specified by _________.
a.
Tighter tolerance of fiber diameter
b.
Special ceramic connectors
c.
Low insertion loss when tested with other reference cables
d.
Special cable manufacturing techniques
 

Multiple Response
Identify one or more choices that best complete the statement or answer the question.
 

 8. 

Setting a reference for an insertion loss test uses ______ reference cable(s) depending on the types of connectors on the ends of the cable plant. (Check all that apply.)
 a.
1
 b.
2
 c.
3
 d.
None
 

Matching
 
 
Match the “0 dB” reference method necessary for insertion loss testing for each of these test requirements:
a.
Instruments with SC connectors testing cable plant with LC connectors
b.
Instruments with SC connectors testing cable plant with MPO connectors
c.
Instruments with SC connectors testing cable plant with SC connectors
 

 9. 

1 cable reference
 

 10. 

2 cable reference
 

 11. 

3 cable reference
 
 
Mathc the length of the reference cable to the cable type below:
a.
OTDR launch cable
b.
OTDR receive cable
c.
Insertion loss launch and receive cable
 

 12. 

1-3 meters
 

 13. 

Longer than the OTDR dead zone
 

 14. 

Long enough to be resolved by the OTDR
 



 
Check Your Work     Start Over