The 104-QUAD-8 card is a general purpose Quadrature Encoder Counter/Interface board. It is provided in the popular 104 format and conditions and monitors the outputs of 8 encoders.

  • 4, 6, or 8 channels of quadrature encoder inputs and channel index inputs
  • Counts outputs from eight quadrature encoders
  • Three differential channels per encoder, including dual axis and index
  • Input ranges: ±25V and ±7V common mode
  • 4.3MHz maximum clock rate
  • Individual software reset for each channel
  • Standard counting and alarm functions
  • Programmable for counting, speed, and direction; limit setting with with interrupts
  • Factory flexible interrupt options

For over 20 years, ACCES I/O Products, Inc. has supplied an extensive range of analog, digital, serial communication, and isolated I/O boards and solutions. ACCES also offers complete systems, integration services and enclosures with a quick turn-around on custom projects including software. ACCES products are designed for use with PC/104, USB/104, Pico-I/O, PCI Express, PCI, PCI-X, Low Profile PCI, ETX, EPIC, USB, Ethernet and ISA, as well as distributed and wireless I/O. ACCES is a privately held, financially strong company with approximately 30 employees (12 of which have over 140 years of cumulative experience at ACCES). With new trends forming, and technologies emerging, ACCES provides the market with current, practical, and easy to use data acquisition products and solutions. New technologies such as PCI Express,wireless, Ethernet, and USB based data acquisition are just a small example of present and future applications utilizing ACCES I/O's data acquisition products and expertise. With a focus on complete customer support, service, and satisfaction, ACCES has developed a diverse customer base. Serving virtually every type of application including temperature monitoring and control, military and communication systems, flight simulation, automation and many more has enabled ACCES to design new products with the customer in mind. Visit for full details on products, services, application stories, and latest ACCES news, or call toll-free at (800) 326-1649.

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