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1. Introduction
1.1 General Description
The OME-A-822PGL/PGH is a high performance, multifunction analog, digital I/O
board for PC AT compatible computers. The OME-A-822PGL provides low gain (0.5,1, 2, 4,
8). The OME-A-822PGH provides high gain (0.5,1,5,10,50,100,500,1000). The
OME-A-822PGL/PGH contains a 12-bit ADC with up to 16 single-ended or 8 differential
analog inputs. The maximum sample rate of the A/D converter is 100Ksample/sec. There are
two 12-bit DACs with voltage output, 16 channels of TTL-compatible digital input, 16
channels of TTL-compatible digital output and one 16-bit counter/timer channel for timing
input and output.
The following A/D performance bench marks were achieved on a 33MHz 486
computer:
z Polling mode : about 100Ksample/sec (with single-task OS)
z Interrupt mode : about 60Ksample/sec (with single-task OS)
z DMA mode : about 100Ksample/sec (with single-task OS)
1.2 Features
z The maximum sample rate of the A/D converter is 100 K samples/sec
z Software selectable input ranges
z PC AT compatible ISA bus
z A/D trigger mode : software trigger , pacer trigger, external trigger
z 16 single-ended or 8 differential analog input signals
z Programmable high gain : 0.5,1,5,10,50,100,500,1000 (OME-A-822PGH)
z Programmable low gain : 0.5,1,2,4,8 (OME-A-822PGL)
z 2 channel 12-bit D/A voltage output
z 16 digital input /16 digital output (TTL compatible)
z Interrupt handling
z Bipolar/Unipolar operation
z 1 channel general purpose programmable 16 bit timer/counter
OME-A-822PGL/PGH Hardware Manual ---- 4