Omega Engineering DAQ-12 user manual Installation

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1. Introduction

The DAQ-12 is a high speed data acquisition adapter for IBM AT and compatible machines offering eight differential analog input channels with 16-bit resolution, two analog output channels with 12-bit resolution and four digital input/output lines. Other features of the DAQ-12 include:

Analog to Digital Converter

200 KHz maximum sampling rate

Bipolar input ranges from ±10mV to ±10 volts

Unipolar input ranges from 20mV to 10 volts

Programmable gain selection

Two DMA channels for continuous acquisition

Internal or external clock and trigger

Digital to Analog Converters

Two independent analog output channels

Output ranges of 0 to ±5 volts

Internal or external voltage reference

Two DMA channels for continuous output

Other Features

äInterrupt on one of four sources including an external interrupt input High density D-62 connector for reduced noise

1.1Installation

1.Configure the DAQ-12 utilizing the instructions in Chapter 2: Circuit Board Description and Configuration.

2.Ensure that power is not applied to the computer system.

3.Remove the cover according to the instructions provided by the system manufacturer.

4.Insert the DAC-16 into any vacant ISA expansion slot. The board is secured to the slot by installing the Option Retaining Bracket (ORB) screw.

5.Replace the system cover per manufacturer instructions.

DAQ-12 Users Manual

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Contents 15,1*,1 WARRANTY/DISCLAIMER Manufacturers Name Manufacturer’s AddressApplication of Council Directive Standards to which Conformity is DeclaredServicing Europe Servicing North AmericaFor immediate technical or application assistance Page Table of Contents Introduction List of Figures and Tables Installation DAQ-12 Specifications Jumper J1 Configuration Analog to Digital ConverterDisable Pre-Scaler Enable Pre-Scaler Factory default Recommended Input Ranges and Gain Settings Code Digital to Analog Converters Voltage Unipolar Bipolar CodeChannel Bipolar Gain =Digital Input/Output Base AddressClock Selection Internal Clock External Clock Trigger Selection Start of ConversionDirect Memory Access 10. Jumpers J8 and J9 Configuration DackInterrupts External InterruptExternal Connections Page Register Description Control Word RegisterINT2 INT1 INT0 Description Start of Conversion Register 3 A/D Converter Data RegisterMulti-Function Timer Register 4 D/A Converter 0 Register5 D/A Converter 1 Register Clock Rate Register low wordProgramming the 8254 Counter/Timer Counter 1 Clock rate register high word Version January 28