FED-STD-228A
4.6 The finished cord shall be placed in a cold chamber for not less than 20 hours at a temperature of -
40° ± 1°. At the end of this period and without removing from the chamber, the cord shall be extended to
4 times its retracted length and then released on a horizontal surface. While still at -40°C temperature,
the cable shall be freed from restraint by tapping on the surface. The cord shall retract to not more than
200 percent of its original length within 30 seconds.
5. RESULTS
5.1 Unless otherwise specified in the detail specification or specification sheet, one specimen from each
inspection unit shall be tested.
5.2 The direct current resistance, both before and after the cycling, shall be recorded.
5.3 The temperature and time of exposure that the cord withstood in the cold chamber shall be recorded.
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