MIL-PRF-31031/1B
Voltage standing wave ratio (VSWR): From 600 to 18 GHz or approximately 80 percent of upper cutoff
frequency of the cable, whichever is lower:
Cable group II: 1.15 + .02 F (GHz).
Cable group VI: 1.15 + .01 F (GHz).
Connector durability: 500 cycles minimum at 12 cycles per minute, maximum. The connector shall
meet the mating characteristics and force to engage and disengage requirements.
Contact resistance: In milliohms, maximum:
Initial
After environment
Center contact
3.0
4.0
Outer contact
2.0
Not applicable
Braid to body
0.5
Not applicable
Dielectric withstanding voltage: Test procedure 020 of EIA 364 condition I.
Cable group II: 750 volts rms at 60 Hz at sea level.
Cable group VI: 1,000 volts rms at 60 Hz at sea level.
Vibration high frequency: Test procedure 028 of EIA 364 condition Ill. No discontinuity permitted. This
test needs to be performed only during initial qualification, as long as the qualifying design, materials and
manufacturing procedures do not change.
Shock: Test procedure 027 of EIA 364 condition F. No discontinuity permitted. This test needs to be
performed only during initial qualification, as long as the qualifying design, materials and manufacturing
procedures do not change.
Temperature cycling: Test procedure 032 of EIA 364 condition I, 5 cycles, except test high temperature
shall be +200°C for connectors using +200°C cables (see table I). Low-test temperature shall be -65°C.
Moisture resistance: Test procedure 031 of EIA 364 condition B. No measurements at high humidity.
Insulation resistance shall be at least 200 megohms within 5 minutes after removal from humidity.
Corona level (at 70,000 feet): This test needs to be performed only during initial qualification, as long as
the qualifying design, materials and manufacturing procedures do not change.
Cable group II: 190 volts rms minimum.
Cable group VI: 250 volts rms minimum.
RF high potential withstanding voltage: This test needs to be performed only during initial qualification, as
long as the qualifying design, materials and manufacturing procedures do not change.
Voltage and frequency (at a frequency from 5 to 7.5 MHz):
5
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