Resistance to Hot Water

This test evaluates the ability of a wire or cable to withstand extended exposure to hot water while connected to a relatively low voltage source. A coiled test sample is secured into a saltwater bath maintained at 85 degrees Celsius; both exposed ends of the sample remain outside he water bath. One exposed end is […] Read more

RF High Potential Withstanding Voltage

This test measures the ability of a high frequency connector to withstand a specified RF voltage and frequency. The connector is mated to the appropriate receptacle and connected to the test circuit. A specified RF voltage and frequency are applied between the center contact and the connector body, stabilized, and maintained for one (1) minute. […] Read more

Shell to Contact Resistance

This test measures the resistance between each grounding contact and the shell of a connector. This quality is imperative to the functionality of the connector as current leakage between contacts and the shell can lead to severe malfunction. The voltage drop is measured between each grounding contact and the shell while carrying a one (1) […] Read more

Seal

This test evaluates the quality of a sealing component part. This test may identify defects in the sealing material or due to the manufacturing process used to form the seal. Testing may be performed upon receipt of samples to verify initial quality, or as post-test evaluation to evaluate component performance under other test conditions. There […] Read more

Unbalanced Pair to Ground Capacitance

A capacitance unbalance bridge is used to measure the pair-to-ground capacitance of a wire pair inside of a multi-pair cable. Read more

Tensile Strength and Elongation of Extruded Insulation, Sheath, and Jacket Materials

This method is intended for use in determining the tensile stress of insulation and sheath compounds. It is applicable to the usual grades of rubber and thermoplastic compounds used for insulation and sheaths. The specimen shall be a piece of the insulation or sheath taken from the inspection unit. The die used to make the […] Read more

Twisting Endurance

This test is performed on cables which are anticipated to be flexed in use; it evaluates the ability of the cable to withstand repeated and reversing torsional motion while subject to a specified temperature. The cable sample is mounted vertically into the testing apparatus with a clamp at the top and kept taught via a […] Read more

Watertightness

This test is performed on cables intended for routing through watertight bulkheads. Such cables must be particularly resistant to longitudinal water flow to prevent potential damage to internal systems. Pressurized water is applied at one end of the cable specimen, into the cable interior. A dry reservoir is placed below the opposite end of the […] Read more

Weight Loss Under Temperature and Vacuum

This test is used to evaluate the amount of weight lost, if any, from a wire specimen when exposed to temperature and vacuum for a period of several days. Test specimens are placed in a chamber where they are subject to pressure of 33 mm Hg and the wire’s rated temperature for 384 hours (16 […] Read more

Wire Color Designators and Munsell Limits

Insulation color is often used to identify a wire or cable’s system or function(s). This test evaluates the characteristics of an insulator’s color as compared to the limitations specified in the applicable standard. A visual examination of the color is made in comparison with either the MIL-STD-104 limit cards or the UV Munsell color limit […] Read more

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