MIL-DTL-83739D
TABLE V. Group B inspection.
Test
Requirement
Test
Number of sample units
paragraph
paragraph
to be inspected
RF power handling capability - - - - - - - - - - - - - - - - -
3.6.7
Temperature shock - - - - - - - - - - - - - - - - - - - - - - - -
Vibration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Salt Atmosphere - - - - - - - - - - - - - - - - - - - - - - - -
Shock- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Temperature-altitude- - - - - - - - - - - - - - - - - - - - - - -
Humidity (applicable to type E only) - - - - - - - - - - - -
Hermetic seal (applicable to type H only) - - - - - - - -
Immersion (applicable to type I only)- - - - - - - - - - - -
4.6.2.1.1 Sampling plan. Sample units shall be selected every 6 months. Upon passing this inspection, the
supplier may select sample units every 12 months. If the second level of sampling is passed two successive times,
the supplier may select sample units every 24 months. In the event of a failure, sampling may revert to the 6-month
interval.
4.6.2.1.2 Failures. If failures occur, the sample shall be considered to have failed.
4.6.2.1.3 Disposition of sample units. Sample units which have been subjected to group B inspection shall not be
delivered on the contract or purchase order.
4.7 Methods of examination and test.
4.7.1 Visual and mechanical examination (see 3.4, 3.5.1, 3.7, and 3.9). Switches shall be examined to verify that
the materials, size, mounting, weight, design, construction, finish, marking, and workmanship are in accordance with
the applicable requirements.
4.7.2 Switching rate and primary input power (see 3.6.1 and 3.6.2). The switching rate and primary input power of
the switch shall be determined at the center of the specified (see 3.1) RF frequency range and the primary input
voltage and frequency (when applicable) at the specified (see 3.1) nominal, lowest, and highest value.
4.7.3 Transition time (see 3.6.3). The transition time shall be measured by determining the length of time that the
isolation between outputs is at the lowest value. Test shall be made with the switch energized with nominal input
power and an RF signal into one RF output and a pad, detector, and oscilloscope connected to another RF output.
The RF signal shall be at the center frequency of the specified frequency range.
4.7.4 Voltage standing wave ratio (VSWR) (see 3.6.4). The VSWR shall be determined for each switch position
and when specified (see 3.1), during the period when the outputs are in parallel. Unless otherwise specified (see
3.1), swept frequency technique shall be used to determine the VSWR over the specified (see 3.1) frequency range.
4.7.5 Isolation (see 3.6.5). With the switch energized with nominal input power, the isolation between outputs shall
be determined using the swept frequency technique over the specified frequency range.
4.7.6 Insertion loss (see 3.6.6). The insertion loss shall be measured with the switch stopped on each RF output.
Swept frequency technique shall be used to determine the insertion loss over the specified frequency range (see 3.1).
4.7.7 RF power handling capability (see 3.6.7). With the switch energized with nominal input power, the switch
shall be subjected to the specified (see 3.1) RF power and frequency for the specified period of time. During the test
the switch shall be terminated with the specified load. After the test, the VSWR shall be measured as specified in
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