If your installation will be in an electrically noisy area, then you may want to consider using a protective jacket on the ribbon cables. We optionally offer "Zippertubing" shielded protective jackets. (These are referred to as ZTR-xx on our price list.) The jacket uses 10-mil. high temperature PVC material laminated to a 1-mil. shield of aluminum foil/polyester and groundable through a tinned copper braid.

48-Bit, 32-Bit, and 16-Bit versions are available. The latter two models are de-populated versions of the 48-bit card. Further, letters are appended to the model numbers to signify options included in the card. (See table)

Optional change-of-state detection capability provides means to automatically interrupt the host computer in real time. When activated, latched interrupt requests can be generated when one or more bits change state. That interrupt, in turn, can be used by your application program to poll the inputs, then signal an alarm, and/or initiate scan of other I/O points that have not been previously activated. This can greatly simplify your application program and eliminate need for the application program to continuously poll inputs. Interrupts IRQ 2 through 7, 10-12, and 14-15 can be selected by jumper installation on the card. An on-board microcontroller on "C"-version cards provides capability for a variety of modes of operation as follows:

That last operation mode can occur concurrently with Change-of-State operations. It makes use of an on-board crystal oscillator and a microcontroller and provides means to verify proper system operation, on a timed basis. This is useful in situations where there has not been any bit state changes for an extended period of time and you wish to confirm that the system is still operating properly.

Specifications

Digital Inputs

• Logic 0: Open or 1.5VDC maximum
• Logic 1: 28V Models: 3.5V min. at 0.6 mA, 28V max. at 13 mA
  60V Models: 2.4V min. at 2.0 mA, 60V max. at 2.3 mA.
• Frequency Response:
  • 28V Models: Up to 5 KHz
  • 60V Models: Up to 10 KHz
• Isolation: 60 Vrms channel-to-channel and channel-to-computer.
  (Note: Alternate wires in the ribbon cables are not connected at the card, thus providing bit- to-bit isolation higher than that normally provided by ribbon cables.)

Environmental

• Operating Temperature: 0 to 60 degree C.
• Storage Temperature: -20 to 100 degree C.
• Humidity: 0% to 90% non-condensing.
• Size: 13.310 inches. Install in a full-size slot.

Power Requirements

• 5 VDC at 300 mA typical for fully populated 48 bit card

Regulatory Compliance

• This product is in full compliance with CE requirements.