MIL-DTL-5904E
4.4.2 Operation. The light shall be completely assembled and operated. It shall be
inspected to determine proper operation.
4.4.3 Optical performance. The candlepower and direction of the main beams emitted
by each light shall be determined by the method which has been approved by the procuring
activity. Insufficient candlepower or deviation of over 2°, either horizontal or vertical from the
direction indicated by the aiming device, shall be cause for rejection. (See 6.2.)
4.4.4 Photometric. Photometric tests shall be conducted to determine compliance with
light distribution and color requirements of 3.5.1. All parts shall reach normal operating
temperatures before any readings are taken.
4.4.5 Environmental. Unless otherwise specified, environmental tests shall be conducted
in accordance with the specified procedures of MIL-STD-810 to determine proper operation and
lack of damage.
4.4.5.1 High temperature. The light shall be subjected to high temperature in accordance
with MIL-STD-810, method 501, procedure I, except at a temperature of 131 ±3.6 °F (55 ±2 °C)
and for a period of 7.0 hours, with lamp operating at rated current. Abnormal bulb blackening,
blistering, smoking, or other evidence of heat damage to any part shall be cause for rejection.
4.4.5.2 Low temperature. The light shall be subjected to low temperature in accordance
with MIL-STD-810, method 502, procedure I, for a 48-hour period, followed immediately by
operation and examination of the light. Any evidence of damage shall be cause for rejection.
4.4.5.3 Humidity. The light shall be subjected to humidity in accordance with
MIL-STD-810, method 507, procedure I, except with the humidity ranging from saturation at
tropical sea level at 104 ±3.6 °F (40 ±2 °C) to saturation at 10,000 feet altitude. Any evidence of
damage revealed by subsequent operation and examination of the light shall be cause for
rejection.
4.4.5.4 Rain. The light shall be subjected to rain in accordance with MIL-STD-810,
method 506, procedure I, except that the light shall be operated in the rain chamber for at least
6.0 hours with alternate periods of 30 minutes ON and 30 minutes OFF. During the ON periods,
the lamp shall be operated at rated current. The light shall show no signs of breaking or cracking
when subjected to this test even when equipped with two green filters.
4.4.6 Thermal shock. The light, with two red filters and the specified lamp installed,
shall be operated on rated current at room temperature for a period of 3.0 hours, after which the
light shall immediately be inverted and immersed in water at 50 °C (10 °C) to a depth sufficient
to cover the lens. Any breakage or cracking shall be cause for rejection.
4.4.7 Socket. The socket shall be checked with dummy lamp gages or lamps to
determine that lamps having the maximum and minimum allowable base dimensions can be
satisfactorily installed in the socket.
11
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business