TM 11-6625-2440-12
Section III. OPERATION UNDER UNUSUAL CONDITIONS
3-7. Operation
at
Temperature
Extremes
Temperatures affecting operation of the test set include
3-8. Operation in Tropical Climates
both the operating temperature extremes and the
A moisture and fungus proof (MFP) coating in
nonoperating ambient temperature extremes. The chart
accordance with MILV-173 is applied as specified in MIL-
below lists the extremes for operation and exposure of
T-152 to equipment, assemblies, and parts which have
the test set without degradation in specified
been cleaned prior to coating, to remove such
performance.
contaminants as lubricating oils, mold release agents,
sand, corrosion products, solder fluxes, fingerprints, and
Nonoperating
Operating
dust.
The printed circuit boards have received a
temperature
temperatures
conformal coating per MILI-46058, and do not require the
Low maximum ........................ 32'F
-65F
MFP coating at any time.
High maximum ...................... 120'F
155*F
3-17
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