MIL-DTL-83526C
4.9.8 Terminus retention force (see 3.11.8). Termini shall be inserted into an unmated connector and
tested as follows. Termini shall be subjected to axial compressive loads applied to the front face of the
terminus tending to push the terminus to the rear of the connector insert. Care must be exercised in the
design of the force application mechanism so that it does not physically touch the optical fiber enface.
Axial loads shall be applied at a rate of 1.0 lb (4.4 N) per second up to the minimum load specified (see
3.11.8). The specified load shall be maintained for a minimum of 5 seconds. The terminus position shall
be measured from the rear of the connector insert while under the specified load and shall not exceed the
requirements of 3.11.8. Additionally there shall be no evidence of damage.
4.9.9 Terminus insertion and removal forces. Termini shall be inserted into an unmated connector
using a terminus insertion tool and the force required to insert the terminus measured (see 3.11.9). When
required, a terminus removal tool shall then be engaged to unlock the terminus. The terminus shall be
removed and the force required to remove the terminus measured.
4.9.10 Maintenance aging (see 3.11.10). Unmated connectors shall be tested as follows. Termini
shall be inserted and removed from the connector a minimum of ten times. The termini selected for
insertion and removal shall be the same termini that are monitored for optical performance testing.
Insertion and withdrawal tools shall be as defined in 6.6. The force required to insert each terminus into
the connector and the force required to remove each terminus from the connector shall be measured
during the first and final maintenance aging cycle. Upon completion, units shall meet the requirements of
tested for axial engagement and disengagement forces as follows. One connector shall be rigidly
mounted. The other connector shall be attached to a force gage and brought into position such that the
outermost surfaces of the insert caps are in the same plane. The force gage shall be set to zero. An
axial force shall be allied such that the connectors mate fully. The force shall be recorded. While in this
position, the gage shall be reset to zero and an axial force shall be applied to unmate the connectors and
return to starting position (outermost surfaces of the insert caps are in the same plane). The procedure
shall be repeated 2 times and all force measurements shall be within the limits specified in 3.11.11.
tested as follows. Two mating connectors shall be brought to a position where mechanical mating of the
connector body and coupling nut begins. A torque gauge attached to the coupling nut shall be set to zero
indication. The connectors shall then be fully coupled and the torque required for mating shall be
recorded. The torque gauge shall then be reset to zero indication. The mated connectors shall be fully
unmated and the torque required for unmating shall be recorded. The procedure shall be repeated 2
times and all torque measurements shall be within the limits specified in 3.11.12.
4.9.13 Mating durability (see 3.11.13). The terminated assembly made of one cable mounted
connector and one wall mount, jam-nut mount or in line connector as specified (see 3.1) shall be mated
and unmated in accordance with TIA-455-21. One thousand complete (part separating) cycles (mated
and unmated) shall be accomplished by hand at an optional rate. The change in insertion loss (see
3.10.1), coupling torque (see 3.11.12) and coupling force (see 3.11.11) after the durability tests shall be
measured. The coupling torque and mating forces shall be measured in accordance with the
requirements of this specification and the specification sheet. The connector termini may be cleaned
prior to insertion loss measurements (see 4.9.5) and shall be so noted on data sheets. Connector
coupling hardware shall not require cleaning to meet coupling torque and mating force requirements.
4.9.14 Impact (see 3.11.14). Each connector to be qualified shall be subjected to the test (impact) in
accordance with method B, service class severe of TIA/EIA-455-2.
23
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business