1.1.1 Insulation Resistance

Insulation resistance of between mutually insulated terminals or metals parts shall not be less than **0 megohms before test or initial,using a **0 volts DC insulation resistance meter.

1.2 Contact Resistance 

Contact resistance of between terminals of the jack to be made a closed circuit shall not exceed *0 milliohms after life test ,at a current of below 1 KHZ by voltage drop method or four terminals methods.

2.2.1 Terminal Strength

Every terminal shall be capable of withstand a force of 5N for *0 seconds without lossing and breakdown,but deformation of terminal is accepted.

2.2 Life Test

The life test shall consist of **0 cycles of insertion and extraction with gauge plug covered with a thin coat of grease in order to prevent from heating and wearing,at a rate of *0 to *0 cycles per minutes under no load.At the conclusion of teh test,the jack shall be in operating condition.

2.3 Humidity Test

The jack shall be subjected to temperature of *0±2 °C  and relative humidity of *0% to *5% for a period of *6 hours.Upon completion of exposure,dew drops shall be blown out and removed from the jack,after which the jack shall conditioned at room ambient conditions for *0 minutes.

At the conclusion of the test ,the jack shall be comply with paragraphs 2.1 and 2.2.

The jack shall be subjected to temperature of **5±2 C for a period of *6 hours,then shall be allowed to remain in room ambient conditions for *0 minutes.At the conclusion of the test,the jack shall be comply with paragraph 2.1 and 2.2.

The jack terminal shall be dipped in solder under the condition as specified below.

             Temperature of solder:**0 ±5C

             Dip time:5±1 seconds.

At the conclusion of the test ,the jack shall be comply with paragraphs 2.1 and 2.2,and not show remarkable failure.

2.6.Temperature Cycling Test  

The jack shall subjected to *2 cycles of the following conditions shoen in the figure,and then shall returned and allowed to remain in room ambient condition for *0 minutes.