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Shutter lever and on-off switch |
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|  MIL-E-48441A(Mu)
At the completion of the 5 hour period and while at +150F, the elbow
assembly shall again be subjected to the tests in 4.6.4 to determine
compliance with the applicable requirements of 3.5, for this temperature
(+150F). Upon completion of this test, the temperature of the test
chamber shall be gradually reduced (see NOTE in 4.6.3.1) to room ambient
temperature (+600 to +90F) and the elbow assembly removed from the test
chamber~
4.6.4 Operability.
4.6.4.1 Diopter movement.- Standard torque measuring equipment
capable of measuring the torque values specified in 3.5.1 shall be
utilized for this test. An appropriate adapter, to accomodate the
diopter knob shall be used with the torque measuring equipment. Torque
shall be meassured while rotating the diopter movement through the range
specified in 3.6.4.7.1. The running torque required to rotate the
diopter knob shall conform to the applicable requirements of 3.5.1 for
the temperatures indicated.
4.6.4.2 Focusing mechanism.- Standard torque measuring equipment
capable of measuring the torque values specified in 3.5.2 shall be
utilized for this test. An appropriate adapter, to accommodate Ring "
11733436 shall be used with the torque measuring equipment. Torque
shall be measured while rotating the ring through the range specified in
3.6.9. The running torque required to rotate Ring 11733436 shall conform
to the applicable requirements of 3.5.2 for the temperatures indicated.
4.6.4.3 Disengagement of boresight knob locks.- Standard measuring
equipment capable of measuring the force values specified in 3.5.3 shall
be utilized for this test. The force required to disengage each boresight
knob from the lock position shall conform to the applicable requirements
of 3.5.3 for the temperatures indicated.
4.6.4.4 Rotation of boresight knobs.- Standard torque measuring
equipment capable of measuring the torque values specified in 3.5.4
shall be utilized for this test. An appropriate adapter, to accommodate
the boresight knobs shall be used with the torque measuring equipment.
Torque shall be measured while rotating each boresight knob through the
range specified in 3.6.4.3, The running torque required to rotate each
boresight knob shall. conform to the applicable requirements of 3.5.4 for
the temperatures indicated.
4.6.4.5 Shutter lever and on-off switch.- Standard torque measuring
equipment capable of measuring the torque values specified in 3.5.5
shall be utilized for this test. The torque required to rotate the
shutter lever from the off to on position and then back to the off
position shall conform to the applicable requirements of 3.5;5 for the
temperatures indicated.
4.6.4.6 Gain adjust and reticle brightness control.- Manually
operate the Knob MS 91528-0E1B. The knob shall meet the requirements
specified in 3.5.6, at the temperatures indicated in 3.4.2 in addition
to the standard ambient temperature (+60 to +90F). Elbow assemblies
which have passed the above tests of 4.6.4.1 through 4.6.4.6 inclusive
shall be subjected to the tests in 4.6.5.
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