Omega Engineering OMB-1108-0901 Overview and Theory of Operation 1

DaqTemp User’s Manual 09-06-02 Overview & Theory of Operation 1-1

Overview and Theory of Operation 1

Features and General Information …… 1-1

Scanning…… 1-5

Triggering …… 1-6

Theory of Operation …… 1-7

Features and General Information

DaqTemps are reliable, accurate, and compact data acquisition solutions that evolved from a primary focus on

thermocouple applications. There are presently four DaqTemp systems. Each includes the following hardware

and software.

DaqTemp Hardware

DaqTemp Data Acquisition Module

DaqTemp PCI plug-in board

CA-195 Cable, 3 feet long

DaqTemp Software

DaqView

DaqViewXL

eZ-PostView

Drivers for LabVIEW, DASYLab, and Windows

DaqTemp’s Three Hardware Components

(Module, Cable, and PCI Board)

Card for Digital & Analog I/O T/C Terminal Block Card for Digital & Analog I/O T/C Terminal Block

DaqTemp7 and DaqTemp7A Modules,

Internal Layout*

DaqTemp14 and DaqTemp14A Modules,

Internal Layout*

DaqTemp Features

TC Voltage

Counter/

Frequency

Timer/

Pulse Analog Digital

Inputs Inputs Inputs Outputs Outputs I/O

DaqTemp7 7 7 420 24

DaqTemp7A 7 7 422 24

DaqTemp14 14 7 4 2 0 24

DaqTemp14A 14 7 4 2 4 24

*Note: The following pages include larger illustrations of the DaqTemp Internal Layouts.

P4 P4

Contents

Main Users Guide Servicing North America: U.S.A.: Canada: For immediate technical or application assistance: U.S.A. and Canada: Warnings, Cautions, Notes, and Tips Specifications and Calibration Page Manual Layout Page Table of Contents Page Overview and Theory of Operation 1 Features and General Information Thermocouple Channels (CH1 - CH7, CH9 - CH15) Differential Input Channels (1H / 1L - 7H / 7L) Analog Outputs (DAC0, DAC1, DAC2, and DAC3) DAC2 and DAC3 do not apply to DaqTemp7A. However, the Digital and Analog I/O Terminal Analog Outputs do not apply to DaqTemp7 or to DaqTemp14. However, the Digital and 24-Bit, General Purpose Digital I/O (Channels A0 - A7, B0 - B7, and C0 - C7) Frequency/Counter Inputs 16-Bit Timer Outputs Pacer Clock I/O Hardware Trigger Input Scanning Triggering Fixed pre-trigger with infinite post-trigger. The user specifies the amount of pre-trigger data to Variable pre-trigger with post trigger stop event (driver support only). Unlike the previous pre- Theory of Operation I/O Comparison Matrix Synchronous Input Operations Synchronous Output Operations Output Channel Configuration Asynchronous I/O Operations Operation Matrix Block Diagram Page Page How to Install DaqTemp CAUTIONCAUTION Page Page Step 3 Configure the DaqTemp PCI Board Using Add Device Step 4 Test the DaqTemp PCI Board Step 5 Connect the DaqTemp Module to its PCI Board CAUTIONCAUTION Making Signal Connections 3 Open Thermocouple Detection Software for DaqTemp Applications 4 Page CE-Compliance 5 Overview CE Standards and Directives Safety Conditions Emissions/Immunity Conditions CE Cable Kit for DaqTemps Install the DaqTemp PCI Board with its CE ORB Connect the CA-195CE Cable to the Board Secure the Grounding Pigtail to Cable CA-195CE Connect Cable and Grounding Pigtail to the DaqTemp Module Calibration 6 Overview Using DaqCal.exe Page Specifications 7 Page Page Page Page Page Glossary Page Page Page WARRANTY/DISCLAIMER RETURN REQUESTS/INQUIRIES M3882/1205 Where Do I Find Everything I Need for Process Measurement and Control? OMEGAOf Course! Shop online at omega.com TEMPERATURE PRESSURE, STRAIN AND FORCE FLOW/LEVEL pH/CONDUCTIVITY