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Variable voltage sources

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article image Modular system which can be purchased as a mainframe including hand-held controller, Interbus master controller and LAN (TCP/IP) interface.

WESTEK Electronics has released the Schaffner model 6502 variable voltage source, providing the equipment under test (EUT) with variable power line voltage. It is controlled from the Schaffner Modula mainframe controller to provide 0%, 40%, 70% and 80% of nominal input voltage.

For a larger and continuously variable testing voltage, the Schaffner VAR 6502 is available, providing a 0% to 110% range of line voltage. Both sources have a remotely controlled circuit breaker enabling the user to activate a switching operation or this can be done under program control from the Modula mainframe controller.

Modula is a fieldbus-oriented system with individual testing instrumentation being nodes on the bus (Interbus). The individual instruments are defined as function modules by Modula's software and can physically be hooked up in any order. A master controller knows the properties of each testing module. Modula software presents the user with all the test functions available to a particular hardware configuration of instruments. It is a modular system which can be purchased as a mainframe including hand-held controller, Interbus master controller and LAN (TCP/IP) interface, in combination with instruments including burst, surge and ESD generators and a variety of coupling units for data and telephone networks.

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