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NAVEDTRA 14196A
FIBEROPTICS CH 5
| Question | Answer |
|---|---|
| What is the standard for fiber optic testing for Navy aircraft? | NA01-1A-505-4 |
| What is the standard for fiber optic testing for buildings aboard naval installations? | TIA-568 |
| What is used to ensure the ability of your fiber system to perform in combat, in theater support and humanitarian roles? | Ships Operational Verification Test (SOVT) |
| Which type of qualified check is often referred to as the "light check"? | continuity |
| Which part of the visual spectrum does the Visual Fault Locator (VFL) operate in? | 635 nm - 665 nm |
| What color is the VLF laser? | Red |
| Which tool is commonly referred to by old timers in the electrical world as "the fox and the hound"? | Optical Leak Detector (OLD) |
| What percent of the light can be blocked by a 1 micrometer dust particle on a single-mode core? | 1% |
| What is the most common cause for degradation in the performance of optical connectors? | contamination |
| A fiberscope is a customized microscope used to inspect optical fiber components. What is the minimum magnification that it should provide? | 200x |
| A microscope with what magnification level should be used to check for deep cracks? | 100x |
| What are the workhorse for most fiber optic installations and repair efforts aboard ships? | Optical Loss Test Set (OLTS) |
| What must be used to set the reference power and testing in order to achieve repeatable results in using the OLTS? | measurement quality jumpers |
| Which formula is used to determine what your loss may be in decibels if you do not have the link dynamic range? | Maximum allowable loss (MAL) |
| What works on wave propagation principles to determine the fiber length, loss, and where any discontinuity in the fiber exists? | Optical Time Domain Reflectometer (OTDR) |
| What is measured in by the OTDR to determine the loss over the length of the fiber? | Rayleigh backscatter |
| How many data points are typically displayed on the OTDR screen? | 52,000 |
| What is the typical Index of Refraction for shipboard fiber? | 1.46 and 1.49 |
| How long is the launch cable that is attached to the output port of the OTDR? | 50 meters |
| Which relative measurement is used to assess where the losses are greatest in comparison to the rest of the trace or a historical trace from the same fiber? | reflectance |
| If you are testing an optical fiber that is less than how many meters long you should use the OLTS? | 50 meters |
| What is the process known as of emitting optical power into the fiber? | launch condition |
| What gives guidance on all Blown Optical Fiber (BOF) testing? | MIL-STD-2042 |
Created by:
nng7294
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