MIL-PRF-49320A(CR)
3.9 Electromagnetic interference (EMI). The MLRF shall comply with the radiated emission
and susceptibility requirements in Appendix A.
3.10 Nuclear survivability. The MLRF including all mission-essential mechanical
configurations, optical components, electronic assemblages, electronic equipment, electronic
circuits and electronic piece parts shall withstand the nuclear environments as specified in the
classified document EL-CP-0192-0001A Appendix A, paragraph 30.1. The MLRF shall meet the
operational requirements of section 3.7.2, of this specification after being subjected to the specified
nuclear environments. The following parameters are specified criteria in Figure A-10 and A-11, and
Table A-3, which are included in the Classified Document EL-CP-0192-0001A Appendix A.
a. Time dependent total electric field (E) in volts/meter.
b. Time dependent total magnetic field (H) in amperes/meter.
c. The frequency content of the electric field (E(f)) in volts/meter/hertz.
d. Polarization.
3.11 Safety. The MLRF laser output shall be measured and the MLRF shall be classified and
marked in accordance with TB-MED-524, Control of Hazards to Health from Laser Radiation
dated 30 May 1975. Potentially hazardous areas within the MLRF shall be identified (see 6.6).
Optical products shall contain no thorium or other source material as defined by Title 10, Code of
Federal Regulations Energy, Part 40, in excess of 0.05 percent by weight (500 ppm) or any other
added radioactive materials.
3.12 Technical interpretations. The following technical interpretations are, when referenced
in sections 3, 4, or 5, mandatory for this specification.
3.12.1 Damage. Damage is the deterioration of any physical characteristics including, but
not limited to , surface material, component, durability and safety or the failure of coatings,
adhesives, materials, hardware and fasteners.
3.12.2 Degradation of performance. Degradation of performance is a cumulative
degradation of a measured level of performance while remaining within the specified performance
requirements. For reliability tests degradation of performance is the same as the limits of the
specified performance requirements. For all other tests or series of tests, degradation of
performance is the failure of any MLRF to perform within the specified requirements as well as the
following criteria.
a. The post-ESS mean pulse width shall remain within +3/-5 nanoseconds of the pre-ESS
mean pulse width value, and for all test results subsequent to post-ESS, the mean pulse
width shall remain within ± 3 nanoseconds of the post-ESS mean value.
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