Remote Access 24-Bit Analog/Digital I/O Pod

ACCES I/O Official Distributor
ACCES I/O Official Distributor
Model No:
RAD242
Highlights:
  • Brand: Acces IO
  • Remote intelligent A/D I/O unit with opto-isolated RS-485 interface
  • NEMA 4 enclosure for harsh atmospheric and marine environments
  • Self-calibrating or auto-calibrating modes to eliminate drift errors
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Overview

Model RAD242 is an intelligent, two-differential-channel, 24-bit analog-input interface unit that includes a Delta-Sigma A/D converter. The converter has a digital output filter with adjustable notch frequency from 10 Hz to 2000 Hz. The pod also has 13 bits of digital input/output. A precision 10 VDC voltage that can be used for transducer excitation is available at connector pin 5. As much as 60 mA current can be provided. It is packaged in a NEMA 4 enclosure for remote installation in harsh environments. RAD242 also provides a user-definable interrupt input and counter/timer input. An optional RAD Firmware Development Kit is available if you wish to use those user-programmable input lines or to develop a custom program. A built-in watchdog timer resets the pod if, for some unexpected reason, the microcontroller "hangs up" or if the power supply voltage drops below 4.75 VDC. Data collected by the pod is stored in local RAM for later access through the computer's serial port. This feature facilitates a stand-alone mode of operation. For example, a portable or laptop computer that has an RS-485 port can be brought to the pod, connected, and collect the data.

Main Features
  • Remote intelligent A/D I/O unit with opto-isolated RS-485 interface to host computer
  • NEMA 4 enclosure for harsh atmospheric and marine environments
  • Type 8031 microcontroller with 32K x 8 bits RAM and 32K x 8 bits EEPROM.
  • Two-channel 24-bit A/D delta-sigma converter
  • Bi-polar and unipolar voltage input ranges of 2.5 V and 5 V
  • Self-calibrating or auto-calibrating modes to eliminate drift errors
  • 13-bit digital port with each bit programmable as either input or output
  • Constant current source for thermocouple cold-junction compensation
  • Precision 10 VDC excitation for transducers
  • All programming in software, almost no switches.
Ordering Info
  • RAD242 - Remote Access 24-Bit Analog/Digital I/O Pod
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