West Electronics, Inc.

The JSCU Alarm Control Unit (ACU) was developed by West Electronics, Inc. as a commercial equivalent for the military market. It is a form, fit, and functional replacement for the US Army P/N 13220E4085, ACU and, the units are interchangeable. The ACU was designed to meet the same qualification tests as the standard unit.

The standard unit was developed in the mid to late 1970's and was fabricated using discrete components almost exclusively. The unit consisted of an Input Output terminal board assembly, a power supply, a Status Processor, and miscellaneous interconnect wiring and components. The unit was powered by 115 Volts AC and included an on board battery backup supply.

The Model JSCU was developed after the emergence of the Integrated Circuit (IC) and made use of IC's wherever possible. This resulted in a reduction of metallic interconnect points and improvement in reliability. The Status Processor was reduced to a single Circuit Board, which included both test points and indicator lamps, which conform functionally to those of the original 13220E4085.

A new power supply was developed which is usable directly on both 115 and 220 VAC mains, either 50 or 60 Hertz. A 12 VDC output was included to permit integration of commercial sensors into the J-SIIDS. The battery backup capability functionality as the l 13220E4085.

West Electronics, Inc. estimates that the JSCU unit can be repaired in less than one hour if adequate spare assemblies are maintained. The repair technique recommended is by replacement of major assemblies. Defective components can then be repaired at the bench level or at the West Electronics, Inc. factory.

Due to the advanced design and assembly techniques the fabrication of the JSCU is less labor intensive and the production costs remain less than the original unit. In summary the JSCU is mounted in the same enclosure and is backward compatible with the 13220E4085 ACU for both mechanical installation and form, fit and function. The JSCU is compatible with previously installed wire bundles. To replace a standard unit with the JSCU it is merely necessary to disconnect the input wire bundle and re-connect to the JSCU. The input terminal boards are accessible in the same manner and are positioned similarly to the ACU.

WEI is the OEM Manufacturer of the J-SIIDS Alarm Control Unit. WEI has continued to supply and support this system since 1992. Although WEI will continue to sell completed assemblies as documented, WEI will no longer supply other J-SIIDS related parts and repair services.