DESCRIPTION:

The heart of the ACL-8216 is 16-bit A/D converter which provides high Accuracy at low cost. It is very suitable for high precision monitoring systems in an industrial environment A/D CONVERSION This card provides 16 single-ended or 8 differential analog channels of 16-bit resolution. An instrumentation amplifier with software programmable gain can be configured for voltage gains of 1, 2, 4, and 8. There are three options to trigger the A/D conversion : by software trigger, internal timer pacer or external trigger. Transfer of converted data can be accomplished in the following ways: software polling, interrupt (through ISR) and DMA. All modes can be selected by software. D/A CONVERSION Two channels of multiplying 12-bit double-buffered analog outputs are provided on the ACL-8216. An on-board -5 V internal reference voltage is used to provide analog output in the range 0~5 V. With an external AC to DC reference, it can generate outputs of 0~5 V or 0~10 V. DC-TO-DC CONVERTER The analog circuitry is powered by an on-board DC-to-DC converter that provides high noise isolation from the power of computer system. Reduced RFI and EMI noise assure Accuracy on sensitive analog inputs. DIGITAL I/O There are 16 digital inputs and 16 digital outputs allowing the ACL-8216 to interface to variety of digital signals through two 20-pin dual-in-line connector. TIMER/COUNTER The 3-channel programmable interval timer (8253 or 8254) on-board provides timing for the A/D or can be used to generate frequency outputs at any rate from 2 MHz to 0.00046 Hz.