Omega Engineering OME-A8111 manual General Description, Features

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1.Introduction

1.1General Description

The OME-A-8111 is a high performance, multifunction (analog and digital I/O) board for the PC AT compatible computer with the ISA bus. The OME-A-8111 provides programmable gain (1, 2, 4, 8 and 16). The OME-A-8111 contains a 12-bit ADC with up to 8 single-ended analog inputs. The maximum sample rate of the A/D converter is about 30K sample/sec. There is a 12-bit DAC with voltage outputs, 16 channels of TTL-compatible digital input, and 16 channels of TTL-compatible digital output.

1.2 Features

zThe maximum sample rate of the A/D converter is about 30 K sample/sec

zSoftware selective input ranges

zPC AT compatible ISA bus

zA/D trigger mode: software trigger, pacer trigger

z8 single-ended analog input channels:

Programmable gain: 1, 2, 4, 8, 16

Input range: ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, ±0.3125 V

z1 output channel: 12-bit D/A voltage output, 0~5 V or 0~10 V

z16 digital inputs /16 digital outputs (TTL compatible)

zInterrupt handling

OME-A-8111 Hardware Manual (ver.1.1, Jul/2003)

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Contents User’sGuide Benelux CanadaMexico Czech RepublicOME-A-8111 Table of Contents Calibration Features General DescriptionAnalog Inputs SpecificationsPower Consumption 3 A/D ConverterDA Converter Digital I/OInterrupt Channel Programmable Timer/Counter Product Check ListApplications Hardware Configuration Board LayoutI/O Base Address Setting Default base address isJumper Setting 1 JP1 D/A Internal Reference Voltage SelectionI/O Register Address Address Read Write8254 Counter 2 A/D Input Buffer Register3 D/A Output Latch Register 4 D/I Input Buffer RegisterClear Interrupt Request 6 A/D Gain Control Register7 A/D Multiplex Control Register 8 A/D Mode Control Register SI2 SI1 SI09 A/D Software Trigger Control Register 10 D/O Output Latch Register Digital I/O CN38254 Timer/Counter CounterA/D Conversion Sec1 A/D conversion flow If switching from one channel to the next secPacer Trigger Mode 2 A/D Conversion Trigger ModesUsing software trigger and polling transfer 3 A/D Transfer ModesD/A Conversion Analog Input Signal Connection Signal ShieldingPin Assignment CN1 Analog input/Analog output/Connect Pin AssignmentCN2 Analog input/Analog output/Connect Pin Assignment CN3 Analog input/Analog output/Connect Pin AssignmentOME-DB-16P Daughter BoardOME-CA-4002 OME-DB-16RCalibration Calibration VR DescriptionDI/O Testing D/A Calibration StepsA/D Calibration Steps WARRANTY/DISCLAIMER Temperature