CFOS EXAM
What specification is optional when choosing a power meter?
Display resolution
Standard for testing optical power
FOTP-95
Why is insertion loss testing the required method to be used?
Approximates how system will be used
Largest cause of uncertainty in testing MM fiber is?
Modal Distribution
Normal method used for insertion loss testing
Double Ended
Insertion loss testing method used for testing one connector at a
time?
Single Ended
Testing standard for patch cords?
FOTP-171
Testing standard for installed MM Fiber?
OFSTP-14
Mismatching a 50micron fiber with a 62.5 reference cable causes?
Excessive Loss
What causes a 'gainer' in insertion loss testing with light source in
power meter? (Different than gainer in OTDR Testing)
Dirt on connectors during reference setting
, What are the three options for how you set 0db reference?
1, 2 & 3 Cable
Allowance for loss in a connector?
.75dB
Allowance for loss in a splice?
.3dB
What component inserts a measured loss into a length of fiber?
Attenuator
How do we control Modal Distribution?
Mandral Wrap
What is the loss of a MM fiber @850
3.5dB/km
What is the loss of a MM fiber @1300
1.5dB\km
Fiber type and wavelength most susceptible to stress?
SM 1550
If you test 2km MM fiber @850 & @1300 and have 7dB of loss on
both what can be said about the fiber?
Stressed
Which connectors are acceptable in a fiber optic plant
FOCIS
What does OLTS stand for?
What specification is optional when choosing a power meter?
Display resolution
Standard for testing optical power
FOTP-95
Why is insertion loss testing the required method to be used?
Approximates how system will be used
Largest cause of uncertainty in testing MM fiber is?
Modal Distribution
Normal method used for insertion loss testing
Double Ended
Insertion loss testing method used for testing one connector at a
time?
Single Ended
Testing standard for patch cords?
FOTP-171
Testing standard for installed MM Fiber?
OFSTP-14
Mismatching a 50micron fiber with a 62.5 reference cable causes?
Excessive Loss
What causes a 'gainer' in insertion loss testing with light source in
power meter? (Different than gainer in OTDR Testing)
Dirt on connectors during reference setting
, What are the three options for how you set 0db reference?
1, 2 & 3 Cable
Allowance for loss in a connector?
.75dB
Allowance for loss in a splice?
.3dB
What component inserts a measured loss into a length of fiber?
Attenuator
How do we control Modal Distribution?
Mandral Wrap
What is the loss of a MM fiber @850
3.5dB/km
What is the loss of a MM fiber @1300
1.5dB\km
Fiber type and wavelength most susceptible to stress?
SM 1550
If you test 2km MM fiber @850 & @1300 and have 7dB of loss on
both what can be said about the fiber?
Stressed
Which connectors are acceptable in a fiber optic plant
FOCIS
What does OLTS stand for?
