System 472 Features: Amplifier-per-channel multiplexed system Automatic calibration 256 analog inputs; expandable to 2048 Throughput rates to 50kHz Differential inputs Complete line of Analog and Digital function cards 10 Mohm input impedance 16-bit resolution including sign Full scale inputs from +/-5mV to +/-10.24V Voltage insertion calibration automatic, built in SCSI or IEEE-488 interface

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The NEFF System 472 (S472) DAS is a complete moderate-speed DAS for use in computer-based applications. The S472 is designed primarily for computer automated data acquisition in test facilities, laboratories and industrial plants or wherever a moderate-speed DAS is required.

The S472 is designed to accept analog inputs ranging from +/-5mV to +/-10.24V full scale in 12 programmable steps. Sensors such as potentiometers and thermocouples can be input directly to the S472 function cards thus eliminating any need for external signal conditioning.

S472 consists of a 7-inch high, 19-inch wide enclosure with power supply, backplane wiring, I/O Control Logic printed circuit card, Analog Subassembly printed circuit card, and 16 I/O card slots that accept any combination of S472 function cards. Expansion assemblies are available to extend function card capacity to 128. The maximum number of channels or data points to be serviced depends on the type of function cards used.

A built-in calibration supply provides automatic end-to-end calibration of all channels and the post amplifier. Software initiation commands a sequence which calibrates all channels and stores correction constants in non-volatile memory, providing an accuracy of (0.02% F.S. + 2 uV) at a throughput rate of 50,000 measurements per second.