TESTING SPECIFICATIONS

• High Voltage: All input and output terminals will withstand 1500 Vac rms to 

chassis or instrument ground for one minute with a leakage current not to

exceed 25 m.A, for all terminals to ground. Input and output circuits are

electrically isolated from each other, from other circuits and from ground.

• Surge Withstand Capability: All input and output circuits are protected against

system transients. Units pass all requirements of ANSI/IEEE C.37.90.1-1989

defining surge withstand capability.

• Radiated Electromagnetic Withstand Capability: All units are protected against

electromagnetic radiated interference from portable communications transceivers

as outlined in ANSI/IEEE C37.90.2-1987 defining radiated electromagnetic

withstand capability.

• Control Accuracy Specification: All units comply with ANSI/IEEE C57.15-1986

defining control accuracy of operation.

ENVIRONMENTAL

Temperature Range: Stated accuracies are maintained from -40° to +80° C.

Humidity: Stated accuracies are maintained under 95% relative humidity (non-

condensing). Fungus Resistance: A conformal printed circuit board coating inhibits

fungus growth.