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Method 4.4.5.2 is a temperature and humidity test. A 20-foot length of completed cable is placed in a test chamber such that the exposed ends are not inside the chamber and are prepared for monitoring the electrical characteristics.
The cable is subjected to a temperature of +122 degrees F for 2 hours. During this 2-hour period, the electrical requirements shall be met. After 2 hours, the cable is subjected to five 24-hour cycles of temperature and humidity variations.
This test evaluates the cable’s ability to maintain electrical performance under the temperature and humidity conditions encountered in naval shipboard environments.