MIL-PRF-31031/2A
Voltage standing wave ratio (VSWR): From 500 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 Vl: 1.15 01 F (GHz)
Connector durability 500 cycles minimum, at 12 cycles per minute maximum. The connector shall meet
the mating characteristics arid force to engage and disengage requirements
Contact resistance in milliohms maximum:
After environment
Initial
Center contact
30
40
Outer contact
20
Not applicable
Braid to body
05
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 III. No discontinuity permitted. This
test needs to be performed only during initial qualification so long as the qualifying design does not
change.
Shock: Test procedure 027 of EIA 364 condition F. No discontinuity permitted. This test needs to be
performed only during initial qualification so long as the qualifying design does 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 so long as
the qualifying design does 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
so long as the qualifying design does not change.
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