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Electromagnetic interference (EMI) |
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|  MIL-T-81734D(AS)
3. 2.4.2 Test points. Test points shall be in accordance with MIL-T-21200
except that color coding shall be in accordance with GS 30620-781.
3.2.4.3 Shop replaceable assemblies (SRAs). The electronic portions of
the test set shall be divided into SRAS. Where practicable, these shall
be Quick Replaceable Assemblies (QRAs). All others shall be In-Place
Repairable Assemblies (IPRAs). QRAs shall be designed to make maximum
practicable use of microelectronic packages.
3.2.4,4 Self test capabilities, Self test capability shall be as speci-
fied in the applicable specifications.
3.2.5 Reliability. Mean time between failures (MTBF) for the items of
Table I under full powered conditions shall be as specified in the appli-
cable specifications (see 6.3.13).
3,2.5.1 Operating life. The test set shall have a minimum of 15,000
hours operating life (see 6.3.12) with scheduled maintenance and replace-
ment of parts.
Storage life of the test set shall be a minimum
3.2.5.2 Storage life.
of 5 years.
3.2.5.3 Operational stability. The test set shall operate satisfactorily
over a period of 16 hours, continuously or intermittently, without the
necessity for readjustment of any controls which are inaccessible during
normal use. A standby condition shall be provided, as necessary, to main-
tain component temperature stability.
3,2.6 Electromagnetic interference (EMI). EMI for each Intermediate
maintenance level item of the test set shall be in accordance with MIL-STD-
461, Class ID, except that tests CEO1, CE02, CE03, CE04, RS01, RS02, and
RS04 and limits thereof shall be as specified in the specification for each
test set item listed in Table I of this specification. Each organization
level equipment, except the Service Set, Hydraulic System and the Special
Handling Equipment, shall be in accordance with MIL-STD-461, Class ID,
except the limits of test RS03 shall be in accordance with the test levels
of Table II, and the tests CE01, CE02, CE03, CE04, RS01, RS02 and RS04 and
limits shall be in accordance with the specification for each test set item
listed in Table I of this specification.
3.2.7 Utilities protection. The test set shall protect itself and the
item under test from damage as required for out-of-tolerance (OOT) utility
inputs as follows.
3.2.7.1 Liquid cooling protection. Protection shall be provided for an
OOT liquid coolant flow rate. Protection shall also be provided for an OOT
temperature. The protective devices shall be effective when either or both
OOT conditions exist.
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