Military Catalog - Kitcofo

MQJs / Testing
Measurement Quality Jumpers
What are MQJs?
(Measurement Quality Jumpers)
MQJs are reference cables or test jumpers that are manufactured
and tested to meet the highest levels of optical performance,
while allowing repeatability and flexibility in testing
fiber. An MQJ will not pass a sub-standard component or link,
nor will it fail a good component or link.
Why use MQJs?
Consistency, repeatability, flexibility, and accuracy. Even
though the Power Meter is “zeroed out” before being attached
to the cable to be tested, the quality of the reference cables can
greatly affect your testing results. The use of MQJs minimizes
these effects. MQJs fall within a testing range that ensures
no matter which MQJ you use, your results will be consistent
and repeatable. If various tests must be performed at different
times, the results will be consistent because MQJs (by definition)
yield consistent results.
Why is the One Jumper
Method Prescribed?
Many installers use the two (or three) jumper reference method
for all of their testing requirements, regardless of the cable plant
configuration. The two (or three) jumper reference methods
can, however, understate the actual link loss. The one jumper
reference method will approximate the installed performance
loss more closely and will result in the safest and most conservative
test results. In accordance with MIL-STD-2042B, Part
6 the one jumper reference method is the correct method for
measuring link loss. This procedure is also the accepted method
for measuring link loss according to TIA/EIA-568-B.3 in
accordance with ANSI/TIA/EIA-526-14A, Method B.
6877804-13
Manufacturing & Verifying MQJs
In order to manufacture Measurement Quality Jumpers
extensive testing and verification procedures must be followed.
During the test procedure, each connector is mated and
de-mated ten times. Not only must an MQJ fall within the
range mentioned below (see Table 1 on page 33), it must also
consistently fall within these prescribed ranges. The mean
and standard deviation of these measurements are calculated
and verified to fall within these prescribed ranges. The Navy
requires MQJs to be manufactured using connectors made
in accordance with MIL-C-83522/16, MIL-PRF-28876 or
MIL-T-29504/14/15 specifications. The fiber must meet MIL-
F-49291, and the jacketed cable must meet MIL-C-85045
criteria.
In Conclusion
KITCO has chosen to take the lead in this area and is committed
to ensure that fiber optic testing be performed solely with
the use of the highest quality test jumpers-MQJs. The benefits
of using MQJs are clear; Consistency, Repeatability, Flexibility,
and Accuracy.
The Navy requires . . .
the use of Measurement Quality Jumpers (MQJs)
in accordance with NAVSEA Dwg. #6877804 when
testing shipboard based optical fiber cable
plants per MIL-STD-2042B. MQJs are
available for both multimode and
singlemode enhanced
applications.
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To see how KITCO can help you, call 1-888-548-2636 or visit www.kitcofo.com