CFOS/T
Study online at https://quizlet.com/_bg3548
Which connectors are acceptable in a
FOCIS
fiber optic plant
What does OLTS stand for? Optical loss test set
Fiber optic cable is sometimes tested for
Continuity
what before its installed?
Difference between visual fault locator
Amount of optical power put into the fiber
and tracer?
What can find breaks in fibers too close
Visual Fault Locator
to be seen by an OTDR?
Best way to examine a connector? At an angle
What is done before inspecting a con-
Ensure no power is present
nector with a microscope?
What would happen if you inspected a
Small scratches look worse than they ac-
connector with excessively high magnifi-
tually are
cation?
Where are scratches or defects a prob-
Anywhere on the core
lem?
What is the most basic measurement in
Optical Power
fiber optics?
Loss of 20dB is what reduction in power? 100x reduction in power
Loss of 3dB is what reduction in power? 50% reduction in power
Formula for Attenuation? 10, 2, 1
0dBm is equal to? 1 milliwatt
What does the 'm' in dBm represent? milliwatt
Which of the following will not affect loss? Meter Calibration Wavelength
Why do fiber optic power meters mea-
Measures loss directly
sure loss in dB?
What does 0 dB show? Loss & Reflectance
What specification is optional when
Display resolution
choosing a power meter?
Standard for testing optical power FOTP-95
1/5
, CFOS/T
Study online at https://quizlet.com/_bg3548
Why is insertion loss testing the required
Approximates how system will be used
method to be used?
Largest cause of uncertainty in testing
Modal Distribution
MM fiber is?
Normal method used for insertion loss
Double Ended
testing
Insertion loss testing method used for
Single Ended
testing one connector at a time?
Testing standard for patch cords? FOTP-171
Testing standard for installed MM Fiber? OFSTP-14
Mismatching a 50micron fiber with a 62.5
Excessive Loss
reference cable causes?
What causes a 'gainer' in insertion loss
Dirt on connectors during reference set-
testing with light source in power meter?
ting
(Different than gainer in OTDR Testing)
What are the three options for how you
1, 2 & 3 Cable
set 0db reference?
Allowance for loss in a connector? .75dB
Allowance for loss in a splice? .3dB
What component inserts a measured
Attenuator
loss into a length of fiber?
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 suscep-
SM 1550
tible to stress?
If you test 2km MM fiber @850 & @1300
and have 7dB of loss on both what can Stressed
be said about the fiber?
How do you stop the OTDR from over-
Launch Cable
loading the fiber?
Backscatter
2/5
Study online at https://quizlet.com/_bg3548
Which connectors are acceptable in a
FOCIS
fiber optic plant
What does OLTS stand for? Optical loss test set
Fiber optic cable is sometimes tested for
Continuity
what before its installed?
Difference between visual fault locator
Amount of optical power put into the fiber
and tracer?
What can find breaks in fibers too close
Visual Fault Locator
to be seen by an OTDR?
Best way to examine a connector? At an angle
What is done before inspecting a con-
Ensure no power is present
nector with a microscope?
What would happen if you inspected a
Small scratches look worse than they ac-
connector with excessively high magnifi-
tually are
cation?
Where are scratches or defects a prob-
Anywhere on the core
lem?
What is the most basic measurement in
Optical Power
fiber optics?
Loss of 20dB is what reduction in power? 100x reduction in power
Loss of 3dB is what reduction in power? 50% reduction in power
Formula for Attenuation? 10, 2, 1
0dBm is equal to? 1 milliwatt
What does the 'm' in dBm represent? milliwatt
Which of the following will not affect loss? Meter Calibration Wavelength
Why do fiber optic power meters mea-
Measures loss directly
sure loss in dB?
What does 0 dB show? Loss & Reflectance
What specification is optional when
Display resolution
choosing a power meter?
Standard for testing optical power FOTP-95
1/5
, CFOS/T
Study online at https://quizlet.com/_bg3548
Why is insertion loss testing the required
Approximates how system will be used
method to be used?
Largest cause of uncertainty in testing
Modal Distribution
MM fiber is?
Normal method used for insertion loss
Double Ended
testing
Insertion loss testing method used for
Single Ended
testing one connector at a time?
Testing standard for patch cords? FOTP-171
Testing standard for installed MM Fiber? OFSTP-14
Mismatching a 50micron fiber with a 62.5
Excessive Loss
reference cable causes?
What causes a 'gainer' in insertion loss
Dirt on connectors during reference set-
testing with light source in power meter?
ting
(Different than gainer in OTDR Testing)
What are the three options for how you
1, 2 & 3 Cable
set 0db reference?
Allowance for loss in a connector? .75dB
Allowance for loss in a splice? .3dB
What component inserts a measured
Attenuator
loss into a length of fiber?
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 suscep-
SM 1550
tible to stress?
If you test 2km MM fiber @850 & @1300
and have 7dB of loss on both what can Stressed
be said about the fiber?
How do you stop the OTDR from over-
Launch Cable
loading the fiber?
Backscatter
2/5
