Omega OME-A822PG manual General Description, Features

1.Introduction

1.1General 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

zThe maximum sample rate of the A/D converter is 100 K samples/sec

zSoftware selectable input ranges

zPC AT compatible ISA bus

zA/D trigger mode : software trigger , pacer trigger, external trigger

z16 single-ended or 8 differential analog input signals

zProgrammable high gain : 0.5,1,5,10,50,100,500,1000 (OME-A-822PGH)

zProgrammable low gain : 0.5,1,2,4,8 (OME-A-822PGL)

z2 channel 12-bit D/A voltage output

z16 digital input /16 digital output (TTL compatible)

zInterrupt handling

zBipolar/Unipolar operation

z1 channel general purpose programmable 16 bit timer/counter

OME-A-822PGL/PGH Hardware Manual ---- 4