Data Translation DT9800 Instruction Manual

UM-17473-N

DT9800 Series
User’s Manual

Thirteenth Edition
March, 2006

Data Translation, Inc.
100 Locke Drive
Marlboro, MA 01752-1192
[phone]
www.datatranslation.com

Fax: [phone]
E-mail: [e-mail]

Copyright © 2006 by Data Translation, Inc.

All rights reserved.

Information furnished by Data Translation, Inc.
is believed to be accurate and reliable; however,
no responsibility is assumed by Data Translation,
Inc. for its use; nor for any infringements of
patents or other rights of third parties which
may result from its use. No license is granted by
implication or otherwise under any patent rights
of Data Translation, Inc.

Use, duplication, or disclosure by the United
States Government is subject to restrictions as set
forth in subparagraph (c)(1)(ii) of the Rights in
Technical Data and Computer software clause at
48 C.F.R, 252.227-7013, or in subparagraph (c)(2)
of the Commercial computer Software ­Registered Rights clause at 48 C.F.R., 52-227-19 as
applicable. Data Translation, Inc., 100 Locke
Drive, Marlboro, MA 01752

Data Translation® is a registered trademark of
Data Translation, Inc. DT-Open Layers
DataAcq SDK

TM

Link

, DTx-EZTM, and DT VPITM are trademarks

TM

, DataAcq OMNI CDTM, DT-LV

TM

,

of Data Translation, Inc.

All other brand and product names are
trademarks or registered trademarks of their
respective companies.

Radio and Television Interference

This equipment has been tested and found to comply with CISPR
EN55022 Class A, and EN50082-1 (CE) requirements and also with
the limits for a Class A digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at his own
expense.

Changes or modifications to this equipment not expressly approved
by Data Translation could void your authority to operate the
equipment under Part 15 of the FCC Rules.

Note: This product was verified to meet FCC requirements under
test conditions that included use of shielded cables and connectors
between system components. It is important that you use shielded
cables and connectors to reduce the possibility of causing
interference to radio, television, and other electronic devices.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class A limits for radio
noise emissions from digital apparatus set out in the Radio
Interference Regulations of the Canadian Department of
Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de la class
A prescrites dans le Règlement sur le brouillage radioélectrique
édicté par le Ministère des Communications du Canada.

Table of Contents

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Intended Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

How this Manual is Organized . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Conventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . 13

Related Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Where To Get Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Chapter 1: Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Supported Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Getting Started Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Part 1: Getting Started . . . . . . . . . . . . . . . . . . . . 23

Chapter 2: Preparing to Use a

Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Checking the System Requirements . . . . . . . . . . . . . . . . . . . . . . . 28

Installing the Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Viewing the Documentation Online . . . . . . . . . . . . . . . . . . . . . . . 30

Chapter 3: Installing a Module . . . . . . . . . . . . . . . . . . . . . . . 31

Attaching Modules to the Computer. . . . . . . . . . . . . . . . . . . . . . . 33

Connecting Directly to the USB Ports . . . . . . . . . . . . . . . . . . 33

Connecting to an Expansion Hub . . . . . . . . . . . . . . . . . . . . . 34

Attaching Backplanes/Panels to the EC or EC-I Series . . . . . . . 37

Attaching a 5B Series Backplane . . . . . . . . . . . . . . . . . . . . . . 39

Attaching a 7B Series Backplane . . . . . . . . . . . . . . . . . . . . . . 40

5

Contents

Attaching an AC1324 Screw Terminal Panel . . . . . . . . . . . . 41

Attaching a PB16H Opto-22 Backplane . . . . . . . . . . . . . . . . 41

Attaching an STP-EZ Screw Terminal Panel . . . . . . . . . . . . 42

Chapter 4: Configuring the Module and/or Device Driver . 43

Configuring the DT9800 Series Device Driver . . . . . . . . . . . . . . 45

Configuring the EC and EC-I Series Modules . . . . . . . . . . . . . . . 47

Chapter 5: Wiring Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Wiring Signals to a DT9800 Standard Series Module . . . . . . . . . 53

Connecting Analog Input Signals. . . . . . . . . . . . . . . . . . . . . . 56

Connecting Single-Ended Voltage Inputs . . . . . . . . . . . 57

Connecting Pseudo-Differential Voltage Inputs . . . . . . 58

Connecting Differential Voltage Inputs . . . . . . . . . . . . . 59

Connecting Current Loop Inputs . . . . . . . . . . . . . . . . . . 62

Connecting Thermocouple Inputs . . . . . . . . . . . . . . . . . 63

Connecting Analog Output Signals . . . . . . . . . . . . . . . . . . . . 65

Connecting Digital I/O Signals. . . . . . . . . . . . . . . . . . . . . . . . 65

Connecting Counter/Timer Signals. . . . . . . . . . . . . . . . . . . . 67

Connecting Event Counting Signals . . . . . . . . . . . . . . . 67

Connecting Frequency Measurement Signals . . . . . . . . 69

Connecting Pulse Output Signals . . . . . . . . . . . . . . . . . . 71

Wiring Signals to the EC or EC-I Series. . . . . . . . . . . . . . . . . . . . . 74

Connecting Analog Input Signals. . . . . . . . . . . . . . . . . . . . . . 79

Using 5B or 7B Series Signal Conditioning Modules . . 79

Using an AC1324 Screw Terminal Panel . . . . . . . . . . . . 80

Connecting Single-Ended Voltage Inputs . . . . . . . . 83

Connecting Pseudo-Differential Voltage Inputs. . . 84

Connecting Differential Voltage Inputs. . . . . . . . . . 85

Connecting Current Loop Inputs . . . . . . . . . . . . . . . 88

Connecting Analog Output Signals . . . . . . . . . . . . . . . . . . . . 89

6

Connecting Digital I/O Signals. . . . . . . . . . . . . . . . . . . . . . . . 91

Connecting Counter/Timer Signals. . . . . . . . . . . . . . . . . . . . 95

Connecting Event Counting Signals . . . . . . . . . . . . . . . 97

Connecting Frequency Measurement Signals . . . . . . . 100

Connecting Pulse Output Signals . . . . . . . . . . . . . . . . . 101

Chapter 6: Verifying the Operation of a Module . . . . . . . . 105

Installing the Quick Data Acq Application . . . . . . . . . . . . . . . . 107

Running the Quick Data Acq Application . . . . . . . . . . . . . . . . . 107

Testing Single-Value Analog Input . . . . . . . . . . . . . . . . . . . . . . . 108

Testing Single-Value Analog Output . . . . . . . . . . . . . . . . . . . . . 109

Testing Continuous Analog Input . . . . . . . . . . . . . . . . . . . . . . . 110

Testing Single-Value Digital Input . . . . . . . . . . . . . . . . . . . . . . . 111

Testing Single-Value Digital Output . . . . . . . . . . . . . . . . . . . . . . 112

Testing Frequency Measurement . . . . . . . . . . . . . . . . . . . . . . . . 113

Testing Pulse Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Part 2: Using Your Module . . . . . . . . . . . . . . . . 115

Contents

Chapter 7: Principles of Operation . . . . . . . . . . . . . . . . . . 117

Analog Input Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Input Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Analog Input Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Specifying a Single Channel . . . . . . . . . . . . . . . . . . . . . 121

Specifying One or More Channels . . . . . . . . . . . . . . . . 122

Specifying Digital Input Lines in the Analog Input

Channel List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Performing Dynamic Digital Output Operations . . . 123

Input Ranges and Gains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Specifying the Gain for a Single Channel . . . . . . . . . . 127

Specifying the Gain for One or More Channels . . . . . 127

A/D Sample Clock Sources . . . . . . . . . . . . . . . . . . . . . . . . . . 128

7

Contents

Internal A/D Sample Clock . . . . . . . . . . . . . . . . . . . . . . 129

External A/D Sample Clock . . . . . . . . . . . . . . . . . . . . . 130

Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Analog Input Conversion Modes . . . . . . . . . . . . . . . . . . . . . 131

Continuously Paced Scan Mode . . . . . . . . . . . . . . . . . . 132

Triggered Scan Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Internally Retriggered Scan Mode . . . . . . . . . . . . . 133

Externally Retriggered Scan Mode. . . . . . . . . . . . . 136

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Error Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Analog Output Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Output Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Analog Output Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Output Ranges and Gains . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Conversion Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Digital I/O Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Digital I/O Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Operation Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Counter/Timer Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

C/T Clock Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Internal C/T Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

External C/T Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Internally Cascaded Clock . . . . . . . . . . . . . . . . . . . . . . . 153

Gate Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153

Pulse Output Types and Duty Cycles . . . . . . . . . . . . . . . . . 155

Counter/Timer Operation Modes . . . . . . . . . . . . . . . . . . . . 156

8

Event Counting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Frequency Measurement . . . . . . . . . . . . . . . . . . . . . . . . 158

Rate Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

One-Shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Repetitive One-Shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Chapter 8: Supported Device Driver Capabilities. . . . . . . 169

Data Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Buffering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

DMA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172

Triggered Scan Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Synchronous Digital I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Clocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Counter/Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Contents

Chapter 9: Programming Flowcharts. . . . . . . . . . . . . . . . . 183

Single-Value Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Continuous A/D Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

Event Counting Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Frequency Measurement Operations . . . . . . . . . . . . . . . . . . . . . 191

Pulse Output Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Chapter 10: Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Running the Calibration Utility . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Calibrating the Analog Input Subsystem . . . . . . . . . . . . . . . . . 210

9

Contents

Configuring for Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . 210

Using the Auto-Calibration Procedure . . . . . . . . . . . . . . . . 211

Using the Manual Calibration Procedure . . . . . . . . . . . . . . 211

Calibrating the Thermocouple Circuitry . . . . . . . . . . . . . . . . . . 212

Calibrating the Analog Output Subsystem . . . . . . . . . . . . . . . . 215

Chapter 11: Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 217

General Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

If Your Board Needs Factory Service . . . . . . . . . . . . . . . . . . . . . 222

Appendix A: Specifications . . . . . . . . . . . . . . . . . . . . . . . . 223

Appendix B: Connector Pin Assignments . . . . . . . . . . . . 235

DT9800 Standard Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

EC and EC-I Series Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

DT9804 BNC Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243

Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 245

D-Sub Connector Pin Assignments . . . . . . . . . . . . . . . . . . . 246

10

The first part of this manual describes how to install and set up your
DT9800 Series module and device driver, and verify that your
module is working properly.

The second part of this manual describes the features of the DT9800
Series modules, the capabilities of the DT9800 Series Device Driver,
and how to program the DT9800 Series modules using DT-Open
Layers™ software. Calibration and troubleshooting information is
also provided.

Intended Audience

This document is intended for engineers, scientists, technicians, or
others responsible for using and/or programming the DT9800 Series
modules for data acquisition operations in the Microsoft® Windows
2000 or Windows XP operating system. It is assumed that you have
some familiarity with data acquisition principles and that you
understand your application.

About this Manual

How this Manual is Organized

The manual is organized as follows:

• Chapter 1, “Overview,” describes the major features of the
modules, as well as the supported software and accessories for
the modules.

• Chapter 2, “Preparing to Use a Module,” describes how to
unpack the DT9800 Series package, check the system
requirements, install the DT9800 Series software under Windows
2000 or Windows XP, and view the DT9800 Series documentation
online.

11

About this Manual

• Chapter 3, “Installing a Module,” describes how to install the
DT9800 Series module.

• Chapter 4, “Configuring the Module and/or Device Driver,”
describes how to configure the device driver and the module.

• Chapter 5, “Wiring Signals,” describes how to wire signals to a
DT9800 Series module.

• Chapter 6, “Verifying the Operation of a Module,” describes how
to verify the operation of the module with the Quick Data Acq
application.

• Chapter 7, “Principles of Operation,” describes all of the features
of the modules and how to use them in your application.

• Chapter 8, “Supported Device Driver Capabilities,” lists the data
acquisition subsystems and the associated features accessible
using the DT9800 Series Device Driver.

• Chapter 9, “Programming Flowcharts,” describes the processes
you must follow to program the subsystems on the DT9800 Series
module using DT-Open Layers-compliant software.

• Chapter 10, “Calibration,” describes how to calibrate the analog
I/O circuitry of the modules.

12

• Chapter 11, “Troubleshooting,” provides information that you
can use to resolve problems with the modules and the device
driver, should they occur.

• Appendix A, “Specifications,” lists the specifications of the
modules.

• Appendix B, “Connector Pin Assignments,” shows the pin
assignments for the connectors and the screw terminal
assignments for the modules.

• An index completes this manual.

Conventions Used in this Manual

The following conventions are used in this manual:

• Notes provide useful information or information that requires
special emphasis, cautions provide information to help you avoid
losing data or damaging your equipment, and warnings provide
information to help you avoid catastrophic damage to yourself or
your equipment.

• Items that you select or type are shown in bold.

Related Information

Refer to the following documents for more information on using the
DT9800 Series modules:

• Benefits of the Universal Serial Bus for Data Acquisition. This white
paper describes why USB is an attractive alternative for data
acquisition. It is available on the Data Translation web site
(www.datatranslation.com).

About this Manual

• DT Measure Foundry Getting Started Manual (UM-19298) and

online help. These documents describe how to use DT Measure
Foundry™ to build drag-and-drop test and measurement
applications for Data Translation® data acquisition devices
without programming.

• DataAcq SDK User’s Manual (UM-18326). For programmers who
are developing their own application programs using the
Microsoft C compiler, this manual describes how to use the
DT-Open Layers DataAcq SDK

TM

to access the capabilities of

Data Translation data acquisition devices.

• DTx-EZ Getting Started Manual (UM-15428). This manual
describes how to use the ActiveX controls provided in DTx-EZ
to access the capabilities of Data Translation data acquisition
devices in Microsoft Visual Basic® or Visual C++®.

TM

13

About this Manual

Where To Get Help

• DT-LV Link Getting Started Manual (UM-15790). This manual
describes how to use DT-LV Link

TM

with the LabVIEW®
graphical programming language to access the capabilities of
Data Translation data acquisition devices.

• DAQ Adaptor for MATLAB (UM-22024). This document describes

how to use Data Translation’s DAQ Adaptor to provide an
interface between the MATLAB Data Acquisition subsystem
from The MathWorks and Data Translation’s DT-Open Layers
architecture.

• Microsoft Windows 2000 or Windows XP documentation.

• USB web site (http://www.usb.org).

• Omega Complete Temperature Measurement Handbook and
Encyclopedia®. This document, published by Omega Engineering,

provides information on how to linearize voltage values into
temperature readings for various thermocouple types.

14

Should you run into problems installing or using a DT9800 Series
module, the Data Translation Technical Support Department is
available to provide technical assistance. Refer to Chapter 11 for more
information. If you are outside the United States or Canada, call your
local distributor, whose number is listed on our web site
(www.datatranslation.com).

1

Overview

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Supported Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Getting Started Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

15

Chapter 1

Features

The DT9800 Series is a family of low-cost, multifunction data
acquisition modules for the Universal Serial Bus (USB) (Ver. 1.1 or
Ver. 2.0).

Most computers have two or more USB ports that allow direct
connection to USB devices. You can expand the number of USB
devices attached to a single USB port by using expansion hubs.
DT9800 Series modules are part of the high-power, bus-powered USB
class; therefore, the modules do not require external power, but the
expansion hubs do require external power.

DT9800 Series modules reside outside of the PC and install with a
single cable to ease installation. Modules can be “hot swapped” or
plugged and unplugged while the PC is on, making them useful for
many data acquisition applications.

The DT9800 Series includes the following subseries: DT9800 Standard
Series, DT9800-EC Series, and DT9800-EC-I Series.

16

The DT9800-EC Series modules are not isolated; the DT9800 Standard
Series and DT9800-EC-I Series modules are isolated. In addition, the
DT9800-EC and DT9800-EC-I Series modules support the use of
optional backplanes and screw terminal panels that provide signal
conditioning and other features. Table 1 lists the modules in each
series and the key features of each.

Table 1: Key Features Among the DT9800 Series

Analog

Input

Function

Series

DT9800
Standard
Series

DT9800­EC

d

Series

DT9800­EC-I

d

Series

a. The resolution is 12 bits.
b. The resolution is 16 bits.
c. The gains provided on the DT9805 and DT9806 are 1, 10, 100, and 500.

All other modules provide gains of 1, 2, 4, and 8.

d. The DT9800-EC Series boards are nonisolated; the DT9800-EC-I Series

boards and all other DT9800 Series boards are isolated.

e. The analog input range is 0 to 10 V or ±10 V.

Modules

DT9801

DT9802

DT9803

DT9804

DT9805

DT9806

DT9801-EC

DT9802-EC

DT9803-EC

DT9804-EC

DT9801-EC-Ia16 SE/8 DI

DT9802-EC-I

DT9803-EC-Ib16 SE/8 DI

DT9804-EC-I 16 SE/8 DI

a

a

b

b

c

c

a

a

b

b

a

# of

Analog Inputs

16 SE/8 DI 100 kS/s 0

16 SE/8 DI 100 kS/s 2

16 SE/8 DI 100 kS/s 0

16 SE/8 DI 100 kS/s 2

16 SE/8 DI/
7 thermocouples
and 1 CJC

16 SE/8 DI/
7 thermocouples
and 1 CJC

16 SE/8 DI

16 SE/8 DI

16 SE/8 DI

16 SE/8 DI

16 SE/8 DI

e

e

g

g

e

e

g

g

Sample

Rate

50 kS/s 0

50 kS/s 2

100 kS/s 0

100 kS/s 2

100 kS/s 0

100 kS/s 2

100 kS/s 0

100 kS/s 2

100 kS/s 0

100 kS/s 2

# of

Analog

Outputs

f

h

f

h

Overview

1

1

1

1

1

1

1

1

1

17

Chapter 1

f. The analog output range is 0 to 10 V, 0 to 5 V, ±10 V, or ±5 V.
g. The analog input range is ±10 V.
h. The analog output range is ±10 V.

All DT9800 Series modules share the following major features:

• One 8-bit digital input port and one 8-bit digital output port; the
digital input lines can be included as part of the analog input
channel-gain list to correlate the timing of analog and digital
events; digital outputs can drive external solid-state relays

• Two 16-bit user counter/timers programmable for event
counting, frequency measurement, rate generation (continuous
pulse output), one-shot, and repetitive-one shot pulse output
operations

• USB compatibility

• Software configurable termination resistance for differential
inputs on a channel-by-channel basis

• Input gains of 1, 2, 4, and 8 for all modules except the DT9805 and
DT9806, which support gains of 1, 10, 100, and 500

18

• Continuously paced and triggered scan capability

• A 32-location channel-gain list that supports sampling analog
input channels at the same or different gains in sequential or
random order

• Internal and external clock sources for the analog input
subsystem

• Digital TTL triggering for the analog input subsystem

• One dynamic digital output line

• Programmable gate types and pulse output types

In addition, the DT9805 and DT9806 modules provide thermocouples
and low-level analog input capability. A software calibration utility is
provided for calibrating the analog I/O subsystems of all modules.

Supported Software

The following software is available for use with the DT9800 Series
modules and is shipped on the Data Acquisition OMNI CD:

• DT9800 Series Device Driver – The device driver allows you to
use a DT9800 Series module with any of the supported software
packages or utilities. Refer to Chapter 3 for more information on
loading and configuring the device driver.

Overview

1

1

• Quick Data Acq application – The Quick Data Acq application
provides a quick way to get up and running using a DT9800
Series module. Using this application, you can verify key features
of the modules, display data on the screen, and save data to disk.
Refer to Chapter 6 for more information on using the Quick Data
Acq application.

• Calibration Utility – The Calibration Utility allows you to
calibrate the analog I/O circuitry of the modules. Refer to

Chapter 10 for more information on this utility.

• DT Measure Foundry – An evaluation version of this software is
included or provided via a link on the Data Acquisition OMNI
CD. DT Measure Foundry is drag-and-drop test and
measurement application builder designed to give you top
performance with ease-of-use development. Order the full
development version of this software package to develop your
own application using real hardware.

• DataAcq SDK – Use the Data Acq SDK if you want to develop
your own application software for the DT9800 Series modules
using the Microsoft C compiler; the DataAcq SDK complies with
the DT-Open Layers standard.

• DTx-EZ – DTx-EZ provides ActiveX controls, which allow you to
access the capabilities of the DT9800 Series boards using
Microsoft Visual Basic or Visual C++; DTx-EZ complies with the
DT-Open Layers standard.

1

1

1

1

1

1

1

19

Chapter 1

• DAQ Adaptor for MATLAB – Data Translation’s DAQ Adaptor
provides an interface between the MATLAB Data Acquisition
(DAQ) subsystem from The MathWorks and Data Translation’s
DT-Open Layers architecture.

• DT-LV Link – Use DT-LV Link if you want to use the LabVIEW
graphical programming language to access the capabilities of the
DT9800 Series modules.

Refer to the Data Translation web site (www.datatranslation.com) for
information about selecting the right software package for your
needs.

Accessories

One EP310 cable is shipped with each DT9800 Series module. The
EP310 is a 2-meter, USB cable that connects the USB connector of the
DT9800 Series module to the USB connector on the host computer. If
you want to buy additional USB cables, EP310 is available as an
accessory product for the DT9800 Series.

20

In addition, you can purchase the following optional items from Data
Translation for use with the DT9800 Series:

• EP316 – A 5-meter, USB cable that connects the USB connector of
the DT9800 Series module to the USB connector on the host
computer.

• 5B01 – A 16-channel backplane that accepts 5B Series signal
conditioning modules.

• 5B08 – An 8-channel backplane that accepts 5B Series signal
conditioning modules.

• PWR-977 power supply – A 5 V, 3 A power supply for powering
the 5B Series backplanes.

• 7BP16-1 – A 16-channel backplane that accepts 7B Series signal
conditioning modules.

• 7BP08-1 – An 8-channel backplane that accepts 7B Series signal
conditioning modules.

• 7BP04-1 – A 4-channel backplane that accepts 7B Series signal
conditioning modules.

Overview

1

• AC1324 – A screw terminal panel that connects to a DT9800-EC
or DT9800-EC-I Series module to allow access to the analog
I/O, dynamic digital output, counter/timer, and power signals.

• PB16H – A digital backplane that connects to the DT9800-EC or
DT9800-EC-I module to allow access to the digital I/O signals.

• STP-EZ – A screw terminal panel that connects to a DT9800-EC
or DT9800-EC-I Series module to allow access to the
digital I/O signals. A 50-pin ribbon cable is provided with the
STP-EZ to allow direct connection to a DT9800-EC or
DT9800-EC-I Series module.

• AC1315 – A 2-foot, 26-pin female to 26-pin female cable that
connects a 5B Series backplane to a DT9800-EC or DT9800-EC-I
Series module.

• AC1393 – A 6-inch, 26-pin male to 25-pin female adapter cable
that connects a 7B Series backplane to the AC1315 cable; the
AC1315 cable then connects to a DT9800-EC or DT9800-EC-I
Series module.

• HES14-21 power supply – A linear ac/dc power supply that
provides +24 Vdc for powering 7B Series backplanes.

• EP035 – A 2.4-meter, 50-pin ribbon cable that connects the PB16H
Opto 22 backplane to a DT9800-EC or DT9800-EC-I Series
module.

1

1

1

1

1

1

1

1

21

Chapter 1

Getting Started Procedure

The flow diagram shown in Figure 1 illustrates the steps needed to
get started using the DT9800 Series modules. This diagram is
repeated in each Getting Started chapter; the shaded area in the
diagram shows you where you are in the procedure.

Preparing to Use a Module

(see Chapter 2 starting on page 25)

(see Chapter 3 starting on page 31)

Configure the Module and/or Device Driver

see Chapter 4 starting on page 43)

(see Chapter 5 starting on page 51)

Verify the Operation of the Module

(see Chapter 6 starting on page 105)

Install the Module

Wire Signals

Figure 1: Getting Started Flow Diagram

22

Part 1: Getting Started

2

Preparing to Use a

Module

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Checking the System Requirements . . . . . . . . . . . . . . . . . . . . . . . 28

Installing the Software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Viewing the Documentation Online . . . . . . . . . . . . . . . . . . . . . . . 30

25

Chapter 2

Prepare to Use a Module

(this chapter)

Install the Module

(see Chapter 3 starting on page 31)

Configure the Module and/or Device Driver

see Chapter 4 starting on page 43)

Wire Signals

(see Chapter 5 starting on page 51)

Verify the Operation of the Module

(see Chapter 6 starting on page 105)

26

Unpacking

Open the shipping box and verify that the following items are
present:

• DT9800 Series module

• EP310 USB cable

• Data Acquisition OMNI CD

Preparing to Use a Module

2

2

If an item is missing or damaged, contact Data Translation. If you are
in the United States, call the Customer Service Department at (508)
481-3700. An application engineer will guide you through the
appropriate steps for replacing missing or damaged items. If you are
located outside the United States, call your local distributor, listed on
Data Translation’s web site (www.datatranslation.com).

Once you have unpacked your module, check the system
requirements, as described in the next section.

2

2

2

2

2

2

2

27

Chapter 2

Checking the System Requirements

For reliable operation, your DT9800 Series modules require the
following:

• PC with Pentium 233 MHz (or higher) processor.

• One or more USB ports (Ver. 1.1 or Ver. 2.0). USB Ver. 2.0 is not
required and will not improve performance for this module.

• Windows 2000 or Windows XP (Professional Edition) operating
system.

For USB Ver. 2.0 support, make sure that you install Service Pack
2 (for Windows XP) or Service Pack 4 (for Windows 2000). In
addition, for some systems, you may have to disable standby
mode. If you are not sure whether you are using USB Ver. 1.1 or
Ver. 2.0, run the Open Layers Control Panel applet, described on

page 45.

• 64 MB (or more) of RAM; 128 MB (or more) recommended.

• One or more CD-ROM drives.

28

• Super VGA (800 x 600 or higher resolution) display monitor.

Once you have verified that your system meets the system
requirements, install the software as described in the next section.

Installing the Software

To install the software, do the following:

1. Insert the Data Acquisition OMNI CD into your CD-ROM drive.

Typically, the CD runs automatically. If the CD does not run
automatically, select Run from the Windows Start menu. Enter
x:\setup.exe (where x is the letter of your CD-ROM drive) in the Run
dialog box or use the Browse button to locate setup.exe, and then click
OK.

2. From the Data Acquisition Software setup program, click Install

Drivers.

A list of items that you are about to install appears.

3. Click Install now!

The DT-Open Layers Data Acquisition software wizard appears.

4. Click Next.

The installer prompts you for the destination location.

5. Either change the directory path and/or name using Browse or
accept the default directory (C\Program Files\Data Translation),
and then click Next.

The installer prompts you to begin file installation.

Preparing to Use a Module

2

2

2

2

2

2

6. Click Next.

The installer copies the files to the destination directory.

7. Click Finish.

The DT Data Acquisition Software setup program reappears.

8. Click Quit Installer.

2

2

2

29

Chapter 2

Viewing the Documentation Online

Note: To view the documentation, you must have Adobe Acrobat
Reader 5.0 or greater installed on your system. Acrobat Reader is
provided on the Data Acquisition OMNI CD. If you install Acrobat
Reader from this CD, make sure that you open Acrobat Reader and
accept the license agreement before viewing the documentation.

You can access the DT9800 Series documentation from the Hardware
Documentation program group. From the Windows Start menu, click
Programs|Data Translation, Inc|Hardware Documentation, and
then select the appropriate document.

The following may be helpful when using Adobe Acrobat Reader:

• To navigate to a specific section of the document, click a heading
from the table of contents on the left side of the document.

• Within the document, click the text shown in blue to jump to the
appropriate reference (the pointer changes from a hand to an
index finger).

30

• To go back to the page from which the jump was made, click the
right mouse button and Go Back, or from the main menu, click
Document, and then Go Back.

• To print the document, from the main menu, click File, and then
Print.

• To increase or decrease the size of the displayed document, from
the main menu, click View, and then Zoom.

• By default, text and monochrome images are smoothed in
Acrobat Reader, resulting in blurry images. If you wish, you can
turn smoothing off by clicking File, and then
Preferences/General, and unchecking Smooth Text and Images.

3

Installing a Module

Attaching Modules to the Computer. . . . . . . . . . . . . . . . . . . . . . . 17

Attaching Backplanes/Panels to the EC or EC-I Series . . . . . . . 37

31

Chapter 3

Prepare to Use a Module

(see Chapter 2 starting on page 25)

Install the Module

(this chapter)

Configure the Device Driver and/or Module

(see Chapter 4 starting on page 43)

Wire Signals to the Module

(see Chapter 5 starting on page 51)

Verify the Operation of the Module

(see Chapter 6 starting on page 105)

32

Note: All DT9800 Series modules are factory-calibrated and require
no further adjustment prior to installation. If you are using the
DT9800 Standard, DT9800-EC, or DT9800-EC-I Series modules and
decide later to recalibrate them, refer to Chapter 10 for instructions.

Attaching Modules to the Computer

You can attach a DT9800 Series module to the host computer in one of
two ways:

• Connect directly to a USB port of the host computer, described on
this page. Use this method if one or two DT9800 Series modules
are sufficient for your application.

• Connect to one or more self-powered USB hubs, described on

page 34. Use this method if your application requires more

DT9800 Series modules than the USB ports on the host computer.

You must install the device driver before connecting your DT9800
Series module(s) to the host computer. See “Installing the Software”

on page 29.

Installing a Module

3

3

3

3

Note: DT9800 Series modules are low-power devices (using less
than 500 mA); therefore, they do not require external power
supplies.

Connecting Directly to the USB Ports

To connect a DT9800 Series module directly to a USB port on your
computer, do the following:

1. Attach one end of the EP310 (USB) cable, which is shipped with
the DT9800 Series module, to the USB port on the module.

2. Attach the other end of the EP310 cable to one of the USB ports
on the host computer, as shown in Figure 2.

The operating system automatically detects the USB device and starts
the Found New Hardware wizard.

3

3

3

3

3

33

Chapter 3

USB Ports

DT9800 Series
Modules

Host Computer

EP310 Cables

Figure 2: Attaching the Module to the Host Computer

3. Click Next and/or Finish in the wizard. Once the firmware is
loaded, the wizard restarts to initiate the firmware to accept
commands. Click Next and/or Finish again.

4. Repeat the steps to attach another DT9800 Series module to the
host computer, if desired.

Note: You can unplug a module, and then plug it in again, if you
wish, without causing damage. This process is called hot-swapping.

34

Your application may take a few seconds to recognize a module once
it is plugged back in.

Connecting to an Expansion Hub

Expansion hubs are powered by their own external power supply.
Theoretically, you can connect up to five expansion hubs to a USB
port on the host computer. However, the practical number of DT9800
Series modules that you can connect to a single USB port depends on
the throughput you want to achieve. Each of the hubs supports up to
four modules.

Installing a Module

Note: The bandwidth of the USB Ver. 1.1 bus is 12 Mbits/second.
Each DT9800 Series module running at full speed (100 kHz) requires
200 kB of this bandwidth. Therefore, if you want to achieve full
throughput on each module, you should connect no more than four
DT9800 Series modules to a single USB Ver. 1.1 port.

To connect multiple DT9800 Series modules to an expansion hub, do
the following:

1. Attach one end of the USB cable to the DT9800 Series module and
the other end of the USB cable to an expansion hub.

2. Connect the power supply for the expansion hub to an external
power supply.

3. Connect the hub to the USB port on the host computer using
another USB cable.

The operating system automatically detects the USB device and starts
the Found New Hardware wizard.

4. Click Next and/or Finish in the wizard. Once the firmware is
loaded, the wizard restarts to initiate the firmware to accept
commands. Click Next and/or Finish again.

5. Repeat these steps until you have attached the number of hubs
(up to five) and modules (up to four per hub) that you desire.
Refer to Figure 3.

The operating system automatically detects the USB devices as they are
installed.

3

3

3

3

3

3

3

3

3

35

Chapter 3

Host Computer

USB Cable

DT9800 Series
Module

USB Cables

DT9800 Series
Module

USB Cable

Power Supply
for Hub

DT9800 Series
Module

USB Cables

Self-Powered
USB Hubs

DT9800 Series
Module

Figure 3: Attaching Multiple Modules Using Expansion Hubs

Note: You can unplug a module, and then plug it in again, if you
wish, without causing damage. This process is called hot-swapping.

Your application may take a few seconds to recognize a module once
it is plugged back in.

If you are using a DT9800-EC or DT9800-EC-I Series module,
continue with the next section. Otherwise, continue with the
instructions on wiring in Chapter 4 starting on page 43.

36

Installing a Module

Attaching Backplanes/Panels to the EC or EC-I Series

Only the DT9800-EC and DT9800-EC-I Series modules support
Analog Devices 5B and 7B Series backplanes, the Opto-22 PB16H
digital I/O backplane, and the Data Translation STP-EZ backplane
and AC1324 screw terminal panel.

The DT9800-EC and DT9800-EC-I Series modules provide the
following three connectors:

• Connector J6 − Supports 5B and 7B Series backplanes or an
AC1324 screw terminal panel for analog input connections.

3

3

3

Specific 5B and 7B Series backplanes that are supported include
the following:

− 5B01 − a 16-channel backplane for 5B Series signal

conditioning modules

− 5B08 − an 8-channel backplane for 5B Series signal

conditioning modules

− 7BP16-1 − a 16-channel backplane for 7B Series signal

conditioning modules

− 7BP08-1 − an 8-channel backplane for 7B Series signal

conditioning modules

− 7BP04-1 − a 4-channel backplane for 7B Series signal

conditioning modules

• Connector J5 − Supports an AC1324 screw terminal panel for
analog output, dynamic digital output, counter/timer, and
power connections.

• Connector J4 − Supports the STP-EZ and the PB16H digital I/O
backplane. The PB16H supports eight digital inputs at locations 0
to 7, and eight digital outputs at locations 8 to 15.

3

3

3

3

3

3

37

Chapter 3

Figure 4 shows the location of these connectors on the DT9800-EC

and DT9800-EC-I Series modules.

DT9800-EC or DT9800-EC-I
Series Module

J5

J6

J4

Figure 4: J6, J5, and J4 Connectors

38

This section describes how to connect a 5B or 7B Series backplane, a
AC1324 screw terminal panel, and/or a PB16H Opto-22 backplane to
your DT9800-EC or DT9800-EC-I Series module.

Attaching a 5B Series Backplane

Installing a Module

To connect a 5B Series signal conditioning backplane to a DT9800-EC
or DT9800-EC-I Series module, complete the steps that follow while
referring to Figure 5:

USB Cable to
Host Computer

Figure 5: Connecting a 5B Series Backplane to the DT9800-EC or

DT9800-EC/
DT9800-EC-I

DT9800-EC-I Series Modules

J6 Connector

5B Series Backplane

AC1315
Cable

PWR-977
Power Supply

To wall outlet

3

3

3

3

3

3

1. Plug one end of an AC1315 cable into the J6 connector of the
DT9800-EC or DT9800-EC-I Series module.

2. Plug the other end of the AC1315 cable into the 26-pin connector
on the 5B Series backplane.

3. Connect power supply PWR-977 to the +5 V and power ground
screw terminals on the 5B Series backplane and to the wall outlet.

3

3

3

39

Chapter 3

Attaching a 7B Series Backplane

To connect a 7B Series signal conditioning backplane to a DT9800-EC
or DT9800-EC-I Series module, complete the steps that follow while
referring to Figure 6:

AC1393
Adapter Cable

7B Series Backplane

HES14-21
Power Supply

USB Cable to
Host Computer

J6 Connector

DT9800-EC/
DT9800-EC-I

AC1315
Cable

To wall outlet

Figure 6: Connecting a 7B Series Backplane to the DT9800-EC or

DT9800-EC-I Series Modules

1. Plug one end of an AC1315 cable into the J6 connector of the
DT9800-EC or DT9800-EC-I Series module.

2. Plug the other end of the AC1315 cable into the 26-pin connector
of the AC1393 adapter cable; then, attach the 25-pin connector of
the AC1393 adapter cable to the 7B Series backplane.

3. Connect power supply HES14-21 to the V+A and COM screw
terminals on the 7B Series backplane and to the wall outlet.

40

Attaching an AC1324 Screw Terminal Panel

Installing a Module

To connect an AC1324 screw terminal panel to a DT9800-EC or
DT9800-EC-I Series module, do the following:

1. Plug one end of an AC1315 cable into the J6 or J5 connector of the
DT9800-EC or DT9800-EC-I Series module.

2. Plug the other end of the AC1315 cable into the 26-pin connector
on the AC1324 screw terminal panel, as shown in Figure 7.

J6 or J5 Connector
USB Cable to
Host Computer

Figure 7: Connecting the AC1324 Screw Terminal Panel to the

DT9800-EC or DT9800-EC-I Series Module

DT9800-EC/
DT9800-EC-I

AC1315
Cable

Attaching a PB16H Opto-22 Backplane

3

3

3

3

AC1324

3

3

To connect a PB16H Opto-22 backplane to a DT9800-EC or
DT9800-EC-I Series module, do the following:

1. Plug one end of an EP035 cable into the J4 connector of the
DT9800-EC or DT9800-EC-I Series module.

2. Plug the other end of the EP035 cable into the 50-pin connector on
the PB16H Opto-22 backplane, as shown in Figure 8.

3

3

3

41

Chapter 3

USB Cable
to Host
Computer

DT9800-EC/
DT9800-EC-I

J4 Connector

PB16H Opto-22 Backplane

EP035 50-Pin
Ribbon Cable

Figure 8: Connecting the PB16H Opto-22 Backplane to the

DT9800-EC or DT9800-EC-I Series Module

Attaching an STP-EZ Screw Terminal Panel

To connect an STP-EZ screw terminal panel to a DT9800-EC or
DT9800-EC-I Series module, do the following:

1. Attach one end of the 50-pin cable that is shipped with the
STP-EZ screw terminal panel into connector J4 on the DT9800-EC
or DT9800-EC-I board.

2. Attach the other end of the cable to the J1 connector on the
STP-EZ screw terminal panel, as shown in Figure 9.

42

USB Cable
to Host
Computer

DT9800-EC/
DT9800-EC-I

J4 Connector

50-Pin Ribbon
Cable

STP-EZ

J1 Connector

Figure 9: Connecting the STP-EZ to the DT9800-EC or

DT9800-EC-I Module

4

Configuring the Module and/or

Device Driver

Configuring the DT9800 Series Device Driver. . . . . . . . . . . . . . . 45

Configuring the EC and EC-I Series Modules . . . . . . . . . . . . . . . 47

43

Chapter 4

Prepare to Use a Module

(see Chapter 2 starting on page 25)

(see Chapter 3 starting on page 31)

Configure the Module and/or Device Driver

(see Chapter 5 starting on page 51)

Verify the Operation of the Module

(see Chapter 6 starting on page 105)

Install the Module

this chapter)

Wire Signals

If you are using a DT9800 Standard Series, DT9800-EC Series, or
DT9800-EC-I Series module, you must configure the device driver;
refer to page 45 for information.

In addition, if you are using a DT9800-EC or DT9800EC-I Series
module, you must configure the module; refer to page 47 for
information.

44

Configuring the Module and/or Device Driver

Configuring the DT9800 Series Device Driver

This section describes how to configure the device driver for a
DT9800 Standard Series, DT9800-EC Series, or DT9800-EC-I Series
module to use or not use bias-return termination resistance.

To configure the device driver, do the following:

1. If you have not already done so, power up the host computer and
all peripherals.

2. From the Windows Control Panel, double-click the Open Layers
Control Panel icon.

The Data Acquisition Control Panel dialog box appears.

3. Click the DT9800 Series module that you want to configure, and
then click Advanced.

The DT9800 Configuration dialog box appears.

4. If you are using differential analog input channels, we
recommend that you select the 10k Ohm Resistor Terminations
checkbox for each analog input channel on the module. This
ensures that 10 kΩ of bias return termination resistance is used
for the analog input channels. (This is the default configuration.)
Bias return termination resistance is particularly useful when
your differential source is floating.

4

4

4

4

4

4

If you are using single-ended analog input channels, clear the
checkbox for each analog input channel so that bias return
resistance is not used.

4

4

4

45

Chapter 4

5. To continuously power the analog and/or digital outputs, select
the Power Always On checkbox. The DT9800 Series module will
remain on even when you exit from the applications that use the
module.

If you want to shut down power to the module, you must
uncheck this checkbox and close the control panel. Once all
applications that use this module are exited, the module will
power down. The module will remain off until you either run an
application that uses the module or click the Advanced button
from the Open Layers Data Acquisition Control Panel.

6. Click OK.

7. If you want to rename the module, click Edit Name; otherwise,

go to step 9.

8. Enter a new name for the module, and then click OK.

Note: This name is used to identify the module in all subsequent

applications.

46

9. When you are finished configuring the module, click Close.

10. Repeat steps 3 to 9 for the other modules that you want to

configure.

11. Close the Control Panel.

If you are using a DT9800-EC or DT9800-EC-I module, continue with
the next section. Otherwise, continue with the instructions on wiring
in Chapter 5 starting on page 51.

Configuring the Module and/or Device Driver

Configuring the EC and EC-I Series Modules

To use 5B or 7B Series signal conditioning backplanes with a
DT9800-EC or DT9800-EC-I Series module, you must configure your
USB module for proper operation.

By default, the 5B01 and 7BP16-1 backplanes map to single-ended
analog input channels 0 to 15, the 5B08 and 7BP08-1 backplanes map
to single-ended analog input channels 0 to 7, and the 7BP04-1
backplane maps to single-ended analog input channels 0 to 3.
However, you can use channels 14 and 15 on the 5B01 or 7BP16-1
backplane as analog output channels 0 and 1, if you wish.

Note: You cannot use analog output modules on the 5B08, 7BP04-1,
or 7BP08-1 backplane.

4

4

4

4

4

You can determine how channels 14 and 15 are used on the 5B01 and
7BP16-1 backplanes using DIP switch block SW1 on the DT9800-EC
and DT9800-EC-I modules. DIP switch SW1 contains switches 1 to 4.

To use channels 14 and 15 on the 5B01 or 7BP16 as analog inputs,
slide all the switches of DIP switch SW1 on the DT9800-EC or
DT9800-EC-I Series module to the OFF position. To use channel 14 on
the 5B01 or 7BP16 as analog output channel 0, set switches 1 and 3 of
DIP switch SW1 on the DT9800-EC or DT9800-EC-I Series module to
the ON position.

To use channel 15 on the 5B01 or 7BP16 as analog output channel 1,
set switches 2 and 4 of DIP switch SW1 on the DT9800-EC or
DT9800-EC-I Series modules to the ON position.

Refer to Figure 10 for the location of DIP switch SW1.

4

4

4

4

47

Chapter 4

SW1

J6

SW1

OFF

1

2

3

4

J5

J4

ON

DT9800-EC or DT9800-EC-I
Series Module

Figure 10: DIP Switch SW1

Function

Channel 14 is an
Analog Input

Channel 15 is an
Analog Input

Channel 14 is an
Analog Output

Channel 15 is an
Analog Output

Switch Settings

Set switches 1 and
3 of SW1 OFF.

Set switches 2 and
4 of SW1 OFF.

Set switches 1 and
3 of SW1 ON.

Set switches 2 and
4 of SW1 ON.

48

For example, assume that you are using a 5B01 with the DT9801-EC
and that you want to use analog output channels 0 and 1. In this case,
ensure that you wire DAC0 signals to channel 14 and DAC1 signals
to channel 15 on the 5B01 backplane. Then, set all the switches of DIP
switch SW1 on the DT9800-EC or DT9800-EC-I Series module to the
ON position.

Configuring the Module and/or Device Driver

Also note the following considerations when using 5B and 7B Series
signal conditioning accessories:

• If you are using a 5B Series backplane, you must install jumper
W3 on the 5B Series backplane to connect Amp Low to Analog
Ground.

• 5B and 7B thermocouple modules provide their own CJC and
return a voltage that already compensates for CJC. Therefore,
when using 5B and 7B Series thermocouple modules, you do not
have to compensate for offsets.

• The output of many 5B modules is ±5 V. The output of many 7B
modules is 0 to 10 V. Ensure that you select an input range that
matches the output of the 5B or 7B modules that you are using.
For example, if you are using 5B modules that have an output of
±5 V, use a bipolar input range and a gain of 2 on the DT9800-EC
and DT9800-EC-I Series modules.

• Connect all unused inputs to analog common. Reading an open
channel can cause settling problems on the next valid channel.

4

4

4

4

4

4

4

4

4

49

Chapter 4

50

5

Wiring Signals

Wiring Signals to a DT9800 Standard Series Module . . . . . . . . . 53

Wiring Signals to the EC or EC-I Series. . . . . . . . . . . . . . . . . . . . . 74

51

Chapter 5

Prepare to Use a Module

(see Chapter 2 starting on page 25)

Install the Module

(see Chapter 3 starting on page 31)

Configure the Module and/or Device Driver

see Chapter 4 starting on page 43)

Wire Signals

(this chapter)

Verify the Operation of the Module

(see Chapter 6 starting on page 105)

Note: For information about the special DT9804 BNC modules,
refer to “DT9804 BNC Modules,” in Appendix B.

52

Wiring Signals to a DT9800 Standard Series Module

Wiring Signals

5

CAUTION:

To avoid electrostatic sensitivity, unplug your DT9800 Series module
from the computer before wiring signals.

Keep the following recommendations in mind when wiring signals to
a DT9800 Standard Series module:

• Use individually shielded twisted-pair wire (size 14 to 26 AWG)
when using the DT9800 Standard Series module in highly noisy
electrical environments.

• Separate power and signal lines by using physically different
wiring paths or conduits.

• To avoid noise, do not locate the DT9800 Standard Series module
and cabling next to sources that produce high electromagnetic
fields, such as large electric motors, power lines, solenoids, and
electric arcs, unless the signals are enclosed in a mumetal shield.

• Prevent electrostatic discharge to the I/O while the module is
operational.

• Connect all unused analog input channels to analog ground.

• When first installing the module, try wiring the signals as
follows:

5

5

5

5

5

5

− Wire a function generator or a known voltage source to

analog input channel 0 using the differential configuration.

− Wire an oscilloscope or voltage meter to analog output

channel 0.

− Wire a digital input to digital input line 0 of port A.

− Wire a digital output to digital output line 0 of port B.

5

5

53

Chapter 5

− Wire an external clock or scope to counter/timer channel 0.

− Then, run the Quick Data Acq application (described in

Chapter 6 starting on page 105) to verify that the module is

operating properly.

Once you have determined that the module is operating
properly, wire the signals according to your application’s
requirements.

Figure 11 shows the assignments of the screw terminals on DT9800

Standard Series modules. The screw terminal blocks are removable
for your convenience.

54

t

t

t

t

User Clk Input 0
User Cntr Out 0

External Gate 0
Isolated Dig Gnd

User Clk Input 1

User Cntr Out 1
External Gate 1

Isolated Dig Gnd

Dynamic Dig Out

Digital Output 0

Digital Output 1
Digital Output 2

Digital Output 3
Digital Output 4

Digital Output 5
Digital Output 6

Digital Output 7

Isolated Dig Gnd

54
53
52

51

50
49

48
47
46

45

44
43

42

41

40
39

38
37

36

Isolated Dig Gnd

35

Digital Input 7

DT9800 Standard Series Modules

27

29

30

31

32

33

34

Digital Input 6

Digital Input 5

Digital Input 4

Digital Input 3

Digital Input 2

Digital Input 1

28

Digital Input 0

Isolated +5 V Out

Isolated Dig Gnd

26

24

25

Ext A/D Sample Clk

Ext A/D Trigger

23

Isolated Dig Gnd

22

Analog Out 1 Ret

1
2
3

4
5

6
7

8
9

10
11

12

13
14

15
16

17
18

20

21

Analog Out 1+

Analog Out 0 Ret

Channel 00
Channel 08/00 Ret

Channel 01

Channel 09/01 Ret
Channel 02

Channel 10/02 Ret
Channel 03

Channel 11/03 Ret
Channel 04

Channel 12/04 Re
Channel 05
Channel 13/05 Re

Channel 06
Channel 14/06 Re

Channel 07
Channel 15/07 Re

Isolated An Gnd
Amp Low

19

Analog Out 0+

Wiring Signals

5

5

5

5

5

Figure 11: DT9800 Standard Series

Screw Terminal Assignments

Note: Screw terminals TB19 through TB22 are not used on DT9801,
DT9803, and DT9805 modules since these modules do not support
analog output.

5

5

5

5

55

Chapter 5

Connecting Analog Input Signals

DT9800 Standard Series modules support both voltage and current
loop inputs.

You can connect analog input signals to a DT9800 Standard Series
module in the following configurations:

• Single-ended − Choose this configuration when you want to
measure high-level signals, noise is not significant, the source of
the input is close to the module, and all the input signals are
referred to the same common ground. When you choose the
single-ended configuration, all 16 analog input channels are
available on the DT9800 Standard Series.

• Pseudo-Differential − Choose this configuration when noise or
common-mode voltage (the difference between the ground
potentials of the signal source and the ground of the module or
between the grounds of other signals) exists and the differential
configuration is not suitable for your application. This option
provides less noise rejection than the differential configuration;
however, all 16 analog input channels are available on the
DT9800 Standard Series.

56

• Differential − Choose this configuration when you want to
measure thermocouple or low-level signals (less than 1 V), you
are using an A/D converter with high resolution (greater than
12 bits), noise is a significant part of the signal, or common-mode
voltage exists. When you choose the differential configuration,
eight analog input channels are available on the DT9800
Standard Series.

This section describes how to connect single-ended,
pseudo-differential, and differential voltage inputs, as well as current
loop and thermocouple inputs to the DT9800 Standard Series
module.

Connecting Single-Ended Voltage Inputs

Wiring Signals

Figure 12 shows how to connect single-ended voltage inputs

(channels 0, 1, and 8, in this case) to a DT9800 Standard Series
module.

Note: If you are using single-ended inputs, set up the software so
that bias return resistance is not used. For more information, refer to

page 45.

Signal
Source

­V

-

Vsource 8

-

Vsource 1

source 0

+

+

+

Analog In 0
Analog In 8

Analog In 1

DT9800 Standard Series
Module

TB1
TB2
TB3

5

5

5

5

5

5

*Ensure that you

Isolated Analog Ground*

TB18*

Figure 12: Connecting Single-Ended Voltage Inputs

(Shown for Channels 0, 1, and 8)

TB17

connect Isolated Analog
Ground to Amp Low.

5

5

5

57

Chapter 5

Connecting Pseudo-Differential Voltage Inputs

Figure 13 shows how to connect pseudo-differential voltage inputs

(channels 0, 1, and 8, in this case) to a DT9800 Standard Series
module.

Signal
Source

­V

-

Vsource 8

-

*

V

CM

Vsource 1

*Make this connection as close to V
possible to reduce ground loop errors. V
common mode voltage for all 16 analog inputs.

+

source 0

+

+

Isolated Analog Ground

Amp Low

Analog In 0
Analog In 8

Analog In 1

DT9800 Standard Series
Module

TB1
TB2

TB3

TB17
TB18

sources as

IN

is the

cm

58

Figure 13: Connecting Pseudo-Differential Voltage Inputs

(Shown for Channels 0, 1, and 8)

Wiring Signals

Note: If you are using pseudo-differential inputs, set up the
software so that bias return resistance is not used. For more
information, refer to page 45.

Connecting Differential Voltage Inputs

Figure 14A illustrates how to connect a floating signal source to a

DT9800 Standard Series module using differential inputs. (A floating
signal source is a voltage source that has no connection with earth
ground.)

Note: For floating signal sources, we recommend that you provide
a bias return path for the differential channels by adding 10 kΩ of
termination resistance from the low side of the channel to isolated
analog ground.

For more information on configuring termination resistance, refer to

page 45.

5

5

5

5

5

5

Figure 14B illustrates how to connect a nonfloating signal source to a

DT9800 Series module using differential inputs. In this case, the
signal source itself provides the bias return path; therefore, you do
not need to provide bias return resistance through software.

R

is the signal source resistance while Rv is the resistance required to

s

balance the bridge. Note that the negative side of the bridge supply
must be returned to analog ground.

5

5

5

59

Chapter 5

A)

Floating
Signal
Source

B)

R

v

R

s

R

s

Bridge

+

Analog In 0

Analog In 0
Return

-

Isolated Analog
Ground

DT9800 Standard Series
Module

Analog In 0

Analog In 0
Return

.
.
.

TB1

TB2

TB17

We recommend that you
software-select 10 k
resistance to connect
the low side of channel 0
to analog ground (a
physical resistor is not
required). Refer to page

TB1

45 for more information.

TB2

Ω of

60

+

DC Supply

-

.

Isolated
Analog Ground

.
.

TB17

Figure 14: Connecting Differential Voltage Inputs (Shown for Channel 0)

Wiring Signals

Note that since they measure the difference between the signals at the
high (+) and low (−) inputs, differential connections usually cancel
any common-mode voltages, leaving only the signal. However, if you
are using a grounded signal source and ground loop problems arise,
connect the differential signals to the DT9800 Standard Series module
as shown in Figure 15. In this case, make sure that the low side of the
signal (−) is connected to ground at the signal source, not at the
DT9800 Standard Series module, and do not tie the two grounds
together.

DT9800 Standard Series
Module

5

5

5

.
.
.

TB1
TB2

TB17

We recommend that you
software-select 10 k
resistance to connect
the low side of channel 0
to analog ground (a
physical resistor is not
required). Refer to

Chapter 4 for more

information.

+

Analog In 0

Grounded
Signal
Source

Signal Source
Ground V

Figure 15: Connecting Differential Voltage Inputs from a Grounded Signal

E

s

-

g1

Analog In 0
Return

Isolated Analog
Ground

Source (Shown for Channel 0)

5

5

Ω of

5

5

5

5

61

Chapter 5

Connecting Current Loop Inputs

Figure 16 shows how to connect a current loop input (channel 0, in

this case) to a DT9800 Standard Series module.

+V

CC

4 to 20 mA

Analog Input 0

Analog Input 0
Return

Isolated Analog
Ground

DT9800 Standard Series
Module

TB1

TB2

.
.
.

TB17

We recommend that you software-select 10 k
termination resistance to connect the low side of
channel 0 to analog ground (a physical resistor is
not required). Refer to page 45 for more
information.

User-installed resistor

The user-installed
resistor connects the high
side of the channel to the
low side of the
corresponding channel,
thereby acting as a shunt.
If, for example, you add a
250

Ω resistor, then

connect a 4 to 20 mA
current loop input to
channel 0, the input range
is converted to 1 to 5 V.

Figure 16: Connecting Current Inputs (Shown for Channel 0)

Ω of

62

Wiring Signals

Note: If you are using current loop inputs, set up the software so
that bias return resistance is used. For more information, refer to

page 45.

Connecting Thermocouple Inputs

The DT9805 and DT9806 modules provide cold junction
compensation (CJC) on channel 0 at 10 mV/
seven thermocouples to the DT9805 or DT9806 module using channel
0 as a CJC. The accuracy of the CJC is ±1

Figure 17 shows how to connect a thermocouple input to channel 1 of

a DT9805 or DT9806 module.

° C. You can attach up to

° from 5° to 45° C.

5

5

5

5

5

5

5

5

5

63

Chapter 5

.

No Connection
to Channel 0

+

-

DT9805 or DT9806 Module

CJC
10 mV/

High
Low

High

Low

TB2

TB1

TB3

TB4

10 kΩ

10 kΩ∗

10 kΩ∗

10 M

° C

+2.5 V Ref

Ω

MUX

Chan 0

Chan 1

Thermocouple
Input on
Channel 1

Isolated Analog
Ground

.
.
.

TB17

*We recommend that you software-select 10 kΩ of
termination resistance to connect the low side of
channels 0 and 1 to analog ground (a physical resistor
is not required). Refer to page 45 for more information

The 10 kΩ resistor to the CJC, the CJC,
the 10 M
reference are supplied on the DT9805
and DT9806 module.

Due to the 10 M
reference, the output of the channel
goes to full scale if an open circuit is
detected at the input.

Ω resistor, and the +2.5 V

Ω resistor to the +2.5 V

Figure 17: Connecting Thermocouple Inputs (Shown for Channel 1)

Note: You can connect voltages instead of thermocouples to the
DT9805 and DT9806 modules. In this case, ensure that the signal you
attach to channel 0 is capable of driving 10 kΩ, and that the signals
you attach to channels 1, 2, 3, 4, 5, 6, and 7 are capable of driving
10 MΩ.

64

Connecting Analog Output Signals

Wiring Signals

Figure 18 shows how to connect an analog output voltage signal

(channel 0, in this case) to a DT9802, DT9804, or DT9806 module.

Analog Output 0

Load

Figure 18: Connecting Analog Output Voltages (Shown for Channel 0)

Connecting Digital I/O Signals

Figure 19 shows how to connect digital input signals (lines 0 and 1,

Port A, in this case) to a DT9800 Standard Series module.

Analog Output 0 Return

DT9802, DT9804, or DT9806
Module

TB19

TB20

5

5

5

5

5

5

5

5

5

65

Chapter 5

DT9800 Standard
Series Module

TTL Inputs

Digital Input Line 0 (Port A)

Digital Input Line 1 (Port A)

Isolated Digital Ground

TB28
TB29

TB36

Figure 19: Connecting Digital Inputs (Shown for Lines 0 and 1, Port A)

Figure 20 shows how to connect a digital output (line 0, Port B, in this

case) to a DT9800 Standard Series module.

DT9800 Standard
Series Module

0 Out = LED On

TB45

500 Ω

+

5 V

-

Digital Output Line 0 (Port B)

66

Isolated Digital Ground

TB37

Figure 20: Connecting Digital Outputs (Shown for Line 0, Port B)

Connecting Counter/Timer Signals

Wiring Signals

DT9800 Standard Series modules provide two user counter/timer
channels that you can use for the following operations:

• Event counting

• Frequency measurement

• Pulse output (rate generation, one-shot, and repetitive one-shot)

This section describes how to connect counter/timer signals to
perform these operations. Refer to Chapter 7 for more information on
using the counter/timers.

Connecting Event Counting Signals

Figure 21 shows one example of connecting event counting signals to

a DT9800 Standard Series module using user counter 0. In this
example, rising clock edges are counted while the gate is active.

User Clock Input 0

Signal Source

External
Gating
Switch

Gate 0

Isolated Digital
Ground

TB54

TB52

TB51

5

5

5

5

5

5

5

Isolated Digital Ground

Figure 21: Connecting Event Counting Signals

(Shown for Clock Input 0 and External Gate 0)

TB47

DT9800 Standard
Series Module

5

5

67

Chapter 5

Figure 22 shows another example of connecting event counting

signals to a DT9800 Standard Series module using user counter 0. In
this example, a software gate is used to start the event counting
operation; however, this connection is not required.

DT9800 Standard
Series Module

Signal Source

User Clock Input 0

Isolated Digital
Ground

TB54

TB51

Figure 22: Connecting Event Counting Signals without an External Gate

Input (Shown for Clock Input 0)

Figure 23 shows an example of how to cascade two counters

externally to perform an event counting operation using user
counters 0 and 1. Note that you can also internally cascade counters
using software; if you internally cascade the counters, you do not
need to make the external cascading connections.

68

Wiring Signals

User Clock Input 0

Signal
Source

Figure 23: Cascading Counters (Shown for Event Counting Using

External
Gating
Switch

Counters 0 and 1 and External Gate 0)

Gate 0

Isolated Digital
Ground

Gate 1

Isolated Digital Ground

TB53

TB50

DT9800 Standard
Series Module

Connecting Frequency Measurement Signals

This section describes two examples of how to connect frequency
measurement signals to a DT9800 Standard Series module.

TB54

TB52

TB51

TB48

TB47

User
Counter
Output 0

User Clock
Input 1

5

5

5

5

5

5

The first configuration uses the same wiring as an event counting
application that does not use an external gate signal (see Figure 22 on

page 68); a system timer specifies the duration of the frequency

measurement. In this configuration, the frequency of the clock input
is the number of counts divided by the duration of the Windows
timer.

5

5

5

69

Chapter 5

If you need more accuracy than the system timer provides, you can
connect a pulse of a known duration (such as a one-shot output of
another user counter) to the external gate input, as shown in Figure

24. In this configuration, the frequency of the clock input is the

number of counts divided by the period of the external gate input.

DT9800 Standard
Series Module

Signal Source

Figure 24: Connecting Frequency Measurement Signals

User Clock Input 0

Gate 0

Isolated Digital Ground

(Shown for Clock Input 0 and External Gate 0)

TB54

TB52

TB49

TB47

User
Counter
Output 1

70

Connecting Pulse Output Signals

Wiring Signals

Figure 25 shows one example of connecting pulse output signals to a

DT9800 Standard Series module using user counter 0.

User Clock Output 0

Heater
controller

Figure 25: Connecting Pulse Output Signals

(Shown for Counter Output 0 and Gate 0)

Figure 26 shows an example of how to externally cascade two

counters to perform a rate generation operation using user counters 0
and 1. Note that you can also cascade counters internally using
software; if you internally cascade the counters, you do not need to
make the external cascading connections. In this example, counter 1
gate is logic high.

External
Gating
Switch

Isolated Digital Ground

Gate 0

Isolated Digital
Ground

DT9800 Standard
Series Module

TB53

TB52
TB51

TB47

5

5

5

5

5

5

5

5

5

71

Chapter 5

User Clock Input 0

Signal
Source

External
Gating
Switch

Gate 0

Isolated Digital
Ground

Isolated Digital Ground

TB53

TB50

DT9800 Standard
Series Module

Figure 26: Cascading Counters (Shown for Rate Generation Using

Counters 0 and 1 and External Gate 0)

Figure 27 shows an example of how to cascade two counters

externally to perform a one-shot operation using user counters 0 and

1. Note that you can also internally cascade counters using software;
if you internally cascade the counters, you do not need to make the
external cascading connections. In this example, counter 0 gate is
logic high.

TB54

TB52
TB51

TB47

User
Counter
Output 0

User Clock
Input 1

72

Wiring Signals

User Clock Input 0

Signal
Source

One-Shot
Tri gger

Figure 27: Cascading Counters (Shown for One-Shot Using

Counters 0 and 1 and External Gate 1)

Isolated Digital
Ground

Gate 1

Isolated Digital Ground

TB53

TB50

DT9800 Standard
Series Module

TB54

TB51

TB48
TB47

User
Counter
Output 0

User Clock
Input 1

5

5

5

5

5

5

5

5

5

73

Chapter 5

Wiring Signals to the EC or EC-I Series

CAUTION:

To avoid electrostatic sensitivity, it is recommended that you unplug
your DT9800 Series module from the computer before wiring signals.

When first installing the module, try wiring the signals as follows:

• Wire a function generator or a known voltage source to analog
input channel 0 using the differential configuration.

• Wire an oscilloscope or voltage meter to analog output channel 0.

• Wire a digital input to digital input Port A.

• Wire an external clock or scope to counter/timer channel 0.

• When you finish wiring the signals, run the Quick Data Acq
application (described in Chapter 6 starting on page 105) to verify
that the module is operating properly.
Once you have determined that the module is operating
properly, wire the signals according to your application’s
requirements.

74

Tabl e 2 lists the pin assignments for connector J6, Tab le 3 lists the pin

assignments for connector J5, and Table 4 lists the pin assignments
for connector J4 on the DT9800-EC and DT9800-EC-I Series modules.

Wiring Signals

Table 2: Connector J6 Pin Assignments

AC1324

a

Screw

Terminal

a

Signal Name

J6

Pin #

J6

Pin #

1 TB1 Analog Input 0 2 TB2 Analog Input 0 Return/

a

AC1324

Screw

Terminal

a

Signal Name

Analog Input 8

5

5

3 TB3 Isolated Analog

Ground

5 TB5 Analog Input 1 6 TB6 Isolated Analog

7 TB7 Analog Input 2 8 TB8 Analog Input 2 Return/

9 TB9 Isolated Analog

Ground

11 TB11 Analog Input 3 12 TB12 Isolated Analog

13 TB13 Analog Input 4 14 TB14 Analog Input 4 Return/

15 TB15 Isolated Analog

Ground

17 TB17 Analog Input 5 18 TB18 Isolated Analog

19 TB19 Analog Input 6 20 TB20 Analog Input 6 Return/

21 TB21 Not Connected 22 TB22 Analog Input 7 Return/

b

b

b

4 TB4 Analog Input 1 Return/

Analog Input 9

b

Ground

Analog Input 10

10 TB10 Analog Input 3 Return/

Analog Input 11

b

Ground

Analog Input 12

16 TB16 Analog Input 5 Return/

Analog Input 13

b

Ground

Analog Input 14

Analog Input 15

5

5

5

5

5

5

5

75

Chapter 5

Table 2: Connector J6 Pin Assignments (cont.)

J6

Pin #

a

AC1324

Screw

Terminal

a

Signal Name

J6

Pin #

a

AC1324

Screw

Terminal

a

Signal Name

23 TB23 Analog Input 7 24 TB24 Isolated Analog

b

Ground

25 TB25 Amp Low 26 TB26 External A/D Trigger

a. Analog input signals 8 to 15 are not available on the 5B08 or 7BP08-1 backplane. Analog input

signals 4 to 15 are not available on the 7BP04-1 backplane.

b. This signal is not isolated on the DT9800-EC Series.

Table 3: Connector J5 Pin Assignments

AC1324

J5

Pin #

Screw

Terminal

Signal Name

Pin #

1 TB1 Analog Output 0 2 TB2 Analog Output 0

3 TB3 Analog Output 1 4 TB4 Analog Output 1

J5

AC1324

Screw

Terminal

Signal Name

Return

Return

76

5 TB5 Isolated Digital

a

Ground

7 TB7 External A/D Sample

Clock

9 TB9 Isolated +5 V

a,b

Output

6 TB6 External A/D

Trigger

8 TB8 Isolated Digital

Ground

a

10 TB10 Not Connected

11 TB11 Not Connected 12 TB12 Dynamic Digital

Output

13 TB13 Isolated Digital

a

Ground

14 TB14 User External Gate

1

Table 3: Connector J5 Pin Assignments (cont.)

Wiring Signals

AC1324

J5

Pin #

15 TB15 User Counter Output 1 16 TB16 User Clock Input 1

17 TB17 Isolated Digital

19 TB19 User Counter Output 0 20 TB20 User Clock Input 0

21 TB21 Not Connected 22 TB22 Not Connected

23 TB23 Not Connected 24 TB24 Not Connected

25 TB25 Not Connected 26 TB26 Not Connected

a. This signal is not isolated on the DT9800-EC Series.
b. +5 V output is available only when one of the subsystems is activated, which, in turn, activates

power to the module. This signal can be used as an input to power the digital output latch so
that the outputs retain their states during power down.

J4

Pin #

Screw

Terminal

STP-EZ

Screw

Terminal

Signal Name

a

Ground

Table 4: Connector J4 Pin Assignments

Signal Name

Pin #

18 TB18 User External Gate

J4

Pin #

J5

AC1324

Screw

Terminal

STP-EZ

Screw

Ter minal

Signal Name

0

Signal Name

5

5

5

5

5

5

1 TB1 Not Connected 2 TB2 Digital Ground

3 TB3 Not Connected 4 TB4 Digital Ground

5 TB5 Not Connected 6 TB6 Digital Ground

7 TB7 Not Connected 8 TB8 Digital Ground

9 TB9 Not Connected 10 TB10 Digital Ground

11 TB11 Not Connected 12 TB12 Digital Ground

13 TB13 Not Connected 14 TB14 Digital Ground

5

5

5

77

Chapter 5

Table 4: Connector J4 Pin Assignments (cont.)

STP-EZ

J4

Pin #

15 TB15 Not Connected 16 TB16 Digital Ground

17 TB17 Digital Output 7 18 TB18 Digital Ground

19 TB19 Digital Output 6 20 TB20 Digital Ground

21 TB21 Digital Output 5 22 TB22 Digital Ground

23 TB23 Digital Output 4 24 TB24 Digital Ground

25 TB25 Digital Output 3 26 TB26 Digital Ground

27 TB27 Digital Output 2 28 TB28 Not Connected

29 TB29 Digital Output 1 30 TB30 Not Connected

31 TB31 Digital Output 0 32 TB32 Not Connected

33 TB33 Digital Input 7 34 TB34 Not Connected

35 TB35 Digital Input 6 36 TB36 Not Connected

37 TB37 Digital Input 5 38 TB38 Not Connected

39 TB39 Digital Input 4 40 TB40 Not Connected

Screw

Terminal

Signal Name

J4

Pin #

STP-EZ

Screw

Ter minal

Signal Name

78

41 TB41 Digital Input 3 42 TB42 Not Connected

43 TB43 Digital Input 2 44 TB44 Not Connected

45 TB45 Digital Input 1 46 TB46 Not Connected

47 TB47 Digital Input 0 48 TB48 Not Connected

49 TB49 Not Connected 50 TB50 Not Connected

Connecting Analog Input Signals

Wiring Signals

This section describes how to connect analog input signals to a
DT9800-EC or DT9800-EC-I Series module using a 5B01, 5B08,
7BP16-1, 7BP08-1, or 7BP04-1 signal conditioning backplane, or an
AC1324 screw terminal panel.

Using 5B or 7B Series Signal Conditioning Modules

When using DT9800-EC or DT9800-EC-I Series modules with 5B and
7B Series signal conditioning backplanes and modules, keep the
following considerations in mind:

• The 7BP04-1 backplane maps to single-ended analog input
channels 0 to 3.

• The 5B08 and 7BP08-1 backplanes map to single-ended analog
input channels 0 to 7.

• By default, the 5B01 and 7BP16-1 backplanes map to
single-ended analog input channels 0 to 15. However, you can
use channels 14 and 15 on the 5B01 or 7BP16-1 backplane as
analog output channels 0 and 1 by configuring DIP switch SW1
on the module. Refer to page 47 for more information on
configuring DIP switch SW1.

5

5

5

5

5

5

• Install jumper W3 on the 5B Series backplane to connect Amp
Low to Analog Ground on the backplane.

• 5B and 7B Series thermocouple modules provide their own CJC
and return a voltage that already compensates for CJC.
Therefore, when using 5B or 7B Series modules, you do not have
to compensate for offsets.

• The output of many 5B modules is ±5 V. The output of many 7B
modules is 0 to 10 V. Ensure that you select an input range that
matches the output of the 5B or 7B modules that you are using.
For example, if you are using 5B modules that have an output of
±5 V, use a bipolar input range and a gain of 2 on the DT9800-EC
Series module.

5

5

5

79

Chapter 5

• Connect all unused inputs to analog common. Reading an open
channel can cause settling problems on the next valid channel.

Refer to the 5B Series User’s Manual and 5B Series data sheets or the 7B
Series User’s Manual for detailed information on using the backplanes
and modules, including how to configure jumpers on the backplane,
install modules, wire signals to the modules, and connect power to
the backplanes.

Using an AC1324 Screw Terminal Panel

The DT9800-EC and DT9800-EC-I Series modules support both
voltage and current loop inputs through connector J6. You attach the
AC1324 screw terminal to connector J6 on the DT9800-EC or
DT9800-EC-I Series module as shown in Figure 28.

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9
TB11
TB13
TB15
TB17
TB19
TB21

TB23

TB25

TB2
TB4
TB6

TB8

TB10
TB12

TB14
TB16
TB18

TB20
TB22

TB24
TB26

J6

J5

J4

DT9800-EC or DT9800-EC-I
Series Module

80

Figure 28: Attaching the AC1324 Screw Terminal Panel to Connector J6 of

the DT9800-EC/EC-I for Analog Inputs

Wiring Signals

You can connect analog input voltage signals to an AC1324 screw
terminal panel in the following configurations:

• Single-ended − Choose this configuration when you want to
measure high-level signals, noise is not significant, the source of
the input is close to the DT9800-EC or DT9800-EC-I Series
module, and all the input signals are referred to the same
common ground. When you choose the single-ended
configuration, all 16 analog input channels are available.

• Pseudo-Differential − Choose this configuration when noise or
common-mode voltage (the difference between the ground
potentials of the signal source and the ground of the DT9800-EC
or DT9800-EC-I Series module or between the grounds of other
signals) exists and the differential configuration is not suitable for
your application. This option provides less noise rejection than
the differential configuration; however, all 16 analog input
channels are available.

5

5

5

5

• Differential − Choose this configuration when you want to
measure low-level signals (less than 1 V), you are using an A/D
converter with high resolution (greater than 12 bits), noise is a
significant part of the signal, or common-mode voltage exists.
When you choose the differential configuration, eight analog
input channels are available.

Note: We recommend that you connect all unused analog input
channels to analog ground.

5

5

5

5

5

81

Chapter 5

Keep the following recommendations in mind when wiring analog
input signals to the AC1324 screw terminal panel:

• Use individually shielded twisted-pair wire (size 14 to 26 AWG)
when using the DT9800-EC or DT9800-EC-I Series module and
AC1324 in highly noisy electrical environments.

• Separate power and signal lines by using physically different
wiring paths or conduits.

• To avoid noise, do not locate the DT9800-EC or DT9800-EC-I
Series module, AC1324, and cabling next to sources that produce
high electromagnetic fields, such as large electric motors, power
lines, solenoids, and electric arcs, unless the signals are enclosed
in a mumetal shield.

• Prevent electrostatic discharge to the I/O while the module is
operational.

This section describes how to connect single-ended,
pseudo-differential, and differential voltage inputs, as well as current
loop inputs to the AC1324 screw terminal panel. For a description of
the screw terminal blocks on the AC1324 screw terminal panel, refer
to Table 2 on page 75.

82

Connecting Single-Ended Voltage Inputs

Wiring Signals

Figure 29 shows how to connect single-ended voltage inputs

(channels 0, 1, and 2, in this case) to the AC1324 screw terminal panel.

Signal
Source

­V

source 0

-

Vsource 1

-

Vsource 2

Isolated Analog Ground

*Ensure that you connect Isolated
Analog Ground to Amp Low.
Note that this signal is not isolated on
the DT9800-EC Series.

Figure 29: Connecting Single-Ended Voltage Inputs

+

+

+

(Shown for Channels 0, 1, and 2)

Analog In 0

Analog In 1

Analog In 2

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9
TB11
TB13

TB15

TB17
TB19
TB21
TB23
TB25*

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

5

5

5

5

5

5

Note: If you are using single-ended inputs, set up the software so
that bias return resistance is not used. For more information, refer to

page 45.

5

5

5

83

Chapter 5

Connecting Pseudo-Differential Voltage Inputs

Figure 30 shows how to connect pseudo-differential voltage inputs

(channels 0, 1, and 2, in this case) to the AC1324 screw terminal panel.

Signal
Source

­V

source 0

-

Vsource 1

-

*

V

CM

Vsource 2

+

Analog In 0

Analog In 1

+

+

Analog In 2

Amp Low

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9
TB11
TB13
TB15
TB17

TB19
TB21
TB23
TB25

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

84

Isolated Analog Ground**

*Make this connection as close to V
possible to reduce ground loop errors. V
common mode voltage for all 16 analog inputs.

**This signal is not isolated on the DT9800-EC Series.

sources as

IN

cm

Figure 30: Connecting Pseudo-Differential Voltage Inputs

(Shown for Channels 0, 1, and 2)

is the

Wiring Signals

Note: If you are using pseudo-differential inputs, set up the
software so that bias return resistance is not used. For more
information, refer to page 45.

Connecting Differential Voltage Inputs

Figure 31A illustrates how to connect a floating signal source to a

DT9800-EC or DT9800-EC-I Series module using differential inputs.
(A floating signal source is a voltage source that has no connection
with earth ground.)

For floating signal sources, it is recommended that you provide a bias
return path for the differential channels by adding 10 kΩ of
termination resistance from the low side of the channel to isolated
analog ground. For more information on configuring the bias return
resistance, refer to page 45.

Note: Analog ground is not isolated on the DT9800-EC Series.

Figure 31B illustrates how to connect a nonfloating signal source to a

DT9800-EC or DT9800-EC-I Series module using differential inputs.
In this case, the signal source itself provides the bias return path;
therefore, you do not need to provide bias return resistance through
software.

5

5

5

5

5

5

5

R

is the signal source resistance while Rv is the resistance required to

s

balance the bridge. Note that the negative side of the bridge supply
must be returned to analog ground.

5

5

85

Chapter 5

A)

Floating
Signal
Source

B)

AC1324 Screw Terminal Panel

+

Analog In 0

R

s

Analog In 0
Return

-

When configuring the DT9800 Series Device
Driver, we recommend that you software-select
10 k

Ω of resistance to connect the low side of

channel 0 to analog ground (a physical resistor
is not required). For more information, refer to

page 45.

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19
TB21

TB23
TB25

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18

TB20
TB22
TB24

TB26

86

R

v

R

+

s

DC Supply

Bridge

Analog In 0

Analog In 0
Return

­Isolated

Analog
Ground*

*This signal is not isolated
on the DT9800-EC Series.

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19
TB21

TB23
TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

Figure 31: Connecting Differential Voltage Inputs (Shown for Channel 0)

Note that since they measure the difference between the signals at the
high (+) and low (−) inputs, differential connections usually cancel
any common-mode voltages, leaving only the signal. However, if you
are using a grounded signal source and ground loop problems arise,
connect the differential signals to the AC1324 screw terminal panel as
shown in Figure 32. In this case, make sure that the low side of the
signal (−) is connected to ground at the signal source, not at the
AC1324 screw terminal panel, and do not tie the two grounds
together.

Grounded
Signal Source

E

s

Signal Source
Ground V

g1

+

-

Analog In 0

Analog In 0
Return

Isolated Analog
Ground*

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19
TB21

TB23
TB25

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

Wiring Signals

5

5

5

5

5

5

*This signal is not isolated on the DT9800-EC
Series.

When configuring the DT9800 Series Device
Driver, we recommend that you software-select
10 k

Ω of resistance to connect the low side of

channel 0 to analog ground (a physical resistor
is not required). For more information, refer to

page 45.

Figure 32: Connecting Differential Voltage Inputs from a

Grounded Signal Source (Shown for Channel 0)

5

5

5

87

Chapter 5

Connecting Current Loop Inputs

Figure 33 shows how to connect a current loop input (channel 0, in

this case) to an AC1324 screw terminal panel.

+V

CC

4 to 20 mA

Analog Input 0

Analog Input 0
Return

Isolated Analog
Ground*

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19
TB21

TB23
TB25

AC1324 Screw Terminal Panel

User-installed
resistor

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

88

*This signal is not isolated on the DT9800-EC
Series.

The user-installed resistor connects the high side
of the channel to the low side of the corresponding
channel, thereby acting as a shunt. If, for example,
you add a 250
current loop input to channel 0, the input range is
converted to 1 to 5 V.

When configuring the DT9800 Series Device
Driver, we recommend that you software-select
10 k

Ω of termination resistance to connect the low

side of channel 0 to analog ground (a physical
resistor is not required). For more information,
refer to page 45.

Ω resistor, then connect a 4 to 20 mA

Figure 33: Connecting Current Inputs (Shown for Channel 0)

Wiring Signals

Note: If you are using current loop inputs, set up the software so
that bias return resistance is used. For more information, refer to

page 45.

Connecting Analog Output Signals

The DT9800-EC and DT9800-EC-I Series modules support analog
outputs through connector J5. This section shows how to wire analog
output signals to an AC1324 screw terminal panel attached to
connector J5.

You attach the AC1324 screw terminal to connector J5 on the
DT9800-EC or DT9800-EC-I Series module as shown in Figure 34.

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9
TB11
TB13
TB15
TB17

TB19
TB21

TB23

TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18

TB20

TB22
TB24

TB26

J6

J5

J4

DT9800-EC or DT9800-EC-I
Series Module

5

5

5

5

5

5

5

Figure 34: Attaching the AC1324 Screw Terminal Panel to Connector J5 of

the DT9800-EC/EC-I Series for Analog Outputs

5

5

89

Chapter 5

Figure 35 shows how to connect an analog output voltage signal

(channel 0, in this case) to an AC1324 screw terminal. For a
description of the screw terminal blocks, refer to Table 3 on page 76.

Analog Output 0

Load

Analog Output 0 Return

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19
TB21

TB23
TB25

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

Figure 35: Connecting Analog Output Voltages Using an External +10 V

Reference (Shown for Channel 0)

90

Connecting Digital I/O Signals

Wiring Signals

TB1

TB16

The DT9800-EC and DT9800-EC-I Series modules support digital I/O
signals through connector J4. This section shows how to wire digital
I/I signals to an STP-EZ screw terminal panel attached to connector
J4.

You attach the STP-EZ screw terminal to connector J4 on the
DT9800-EC or DT9800-EC-I Series module as shown in Figure 36.

J1

TB27

TB39

W

TB17

TB26

W

W4
W5

TB38

J2

J5

TB50

J6

DT9800-EC or
DT9800-EC-I Series
Module

J4

5

5

5

5

5

5

Figure 36: Attaching the STP-EZ Screw Terminal Panel to Connector J4 of

the DT9800-EC/EC-I Series for Digital I/O

Figure 37 shows how to connect digital input signals (lines 0 and 1 of

Port A, in this case) to an STP-EZ screw terminal. For a description of
the screw terminal blocks, refer to Table 4 on page 77.

5

5

5

91

Chapter 5

Digital Input
Line 1 (Port A)

TTL Inputs

Digital Input Line
0 (Port A)

Isolated Digital Ground*

*This signal is not isolated on the
DT9800-EC Series.

TB39

TB40
TB41

TB42
TB43
TB44
TB45
TB46
TB47

TB17

TB18
TB19

TB20
TB21
TB22
TB23
TB24
TB25
TB26

STP-EZ Screw Terminal Panel

TB48
TB49

TB50

92

Figure 37: Connecting Digital Inputs (Shown for Lines 0 and 1, Port A)

Figure 38 shows how to connect a digital output (line 0 of Port B, in

this case) to an STP-EZ screw terminal panel.

Wiring Signals

TB27

TB28

0 Out = LED On

500 Ω

+

5 V

-

Isolated Digital Ground*

*This signal is not isolated on the
DT9800-EC Series.

Figure 38: Connecting Digital Outputs (Shown for Line 0, Port B)

Digital Output Line 0
(Port B)

TB17

TB18
TB19

TB20
TB21
TB22
TB23
TB24
TB25
TB26

STP-EZ Screw Terminal Panel

TB29

TB30
TB31
TB32
TB33
TB34
TB35

TB36
TB37

TB38

5

5

5

5

5

5

If you want the digital outputs to retain their values during power
down, you must connect +5 V external power to the +5 V isolated
power signal of connector J5 on the module and activate one of the
subsystems on the module, which, in turn, activates power to the
module.

Figure 39 shows how to connect the AC1324 screw terminal to

connector J5 on the DT9800-EC or DT9800-EC-I Series module.

5

5

5

93

Chapter 5

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9
TB11
TB13
TB15
TB17

TB19
TB21

TB23

TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18

TB20

TB22
TB24

TB26

J6

DT9800-EC or DT9800-EC-I
Series Module

J5

J4

Figure 39: Attaching the AC1324 Screw Terminal Panel to Connector J5 of

the DT9800-EC/EC-I Series for +5 V Power

94

Figure 40 shows how to wire +5 V external power to the AC1315

screw terminal panel.

Wiring Signals

Isolated Digital Ground*

+5 V External Power

*This signal is not isolated on the
DT9800-EC Series.

Figure 40: Connecting +5V External Power to Retain Digital Output States

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7

TB9

TB11
TB13
TB15
TB17

TB19

TB21

TB23

TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

Connecting Counter/Timer Signals

The DT9800-EC and DT9800-EC-I Series modules support two
counter/timer channels through connector J5. This section shows
how to wire counter/timer signals to an AC1324 screw terminal
panel attached to connector J5.

5

5

5

5

5

5

You attach the AC1324 screw terminal to connector J5 on the
DT9800-EC or DT9800-EC-I Series module as shown in Figure 41.

5

5

5

95

Chapter 5

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7
TB9

TB11
TB13
TB15
TB17

TB19

TB21

TB23

TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18

TB20

TB22
TB24

TB26

J6

DT9800-EC or DT9800-EC-I
Series Module

J5

J4

Figure 41: Attaching the AC1324 Screw Terminal Panel to Connector J5 of

the DT9800-EC/EC-I Series for Counter/Timer Signals

You can use these counter/timer channels for the following
operations:

96

• Event counting

• Frequency measurement

• Pulse output (rate generation, one-shot, and repetitive one-shot)

The following sections describe how to wire counter/timer signals to
an AC1324 screw terminal panel to perform these operations. For a
description of the screw terminal blocks, refer to Table 3 on page 76.

Connecting Event Counting Signals

Wiring Signals

Signal
Source

Figure 42 shows one example of connecting event counting signals to

user counter 0 using an AC1324 screw terminal panel attached to
connector J5. In this example, rising clock edges are counted while
the gate is active.

AC1324 Screw Terminal Panel

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

External
Gating
Switch

User Clock Input 0

Gate 0

Isolated Digital
Ground*

TB1
TB3
TB5

TB7

TB9

TB11
TB13
TB15
TB17

TB19
TB21
TB23
TB25

5

5

5

5

5

5

Isolated Digital Ground

Figure 42: Connecting Event Counting Signals

(Shown for Clock Input 0 and External Gate 0)

Figure 43 shows another example of connecting event counting

signals to user counter 0 using an AC1324 screw terminal panel
attached to connector J5. In this example, a software gate is used to
start the event counting operation; however, this connection is not
required.

*This signal is not isolated on the
DT9800-EC Series.

5

5

5

97

Chapter 5

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7

TB9
TB11
TB13
TB15
TB17

TB19
TB21

TB23

TB25

Signal Source

User Clock Input 0

Isolated Digital
Ground*

*This signal is not isolated on the
DT9800-EC Series.

Figure 43: Connecting Event Counting Signals without an External Gate

Input (Shown for Clock Input 0)

Figure 44 shows an example of how to cascade counters 0 and 1

externally to perform an event counting operation using an AC1324
screw terminal panel attached to connector J5. Note that you can also
internally cascade counters using software; if you internally cascade
the counters, you do not need to make the external cascading
connections.

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

98

Signal
Source

External
Gating
Switch

User Clock Input 0

Gates 0 and 1

Isolated Digital
Ground*

User Clock Output 0

Wiring Signals

AC1324 Screw Terminal Panel

TB1

TB3

TB5

TB7

TB9
TB11
TB13
TB15
TB17

TB19
TB21

TB23

TB25

TB2
TB4
TB6

TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

5

5

5

User Clock Input 1

*This signal is not isolated on the
DT9800-EC Series.

Figure 44: Cascading Counters (Shown for Event Counting Using

Counters 0 and 1 and External Gate 0)

5

5

5

5

5

5

99

Chapter 5

Connecting Frequency Measurement Signals

This section describes two examples of how to connect frequency
measurement signals to an AC1324 screw terminal panel attached to
connector J5.

The first configuration uses the same wiring as an event counting
application that does not use an external gate signal (see Figure 43 on

page 98); the software uses the Windows timer to specify the

duration of the frequency measurement. In this configuration, the
frequency of the clock input is the number of counts divided by the
duration of the Windows timer.

If you need more accuracy than the Windows timer provides, you
can connect a pulse of a known duration (such as a one-shot output of
another user counter) to the external gate input, as shown in Figure

45. In this configuration, the frequency of the clock input is the

number of counts divided by the period of the external gate input.

User Clock Input 0

Signal
Source

Isolated Digital Ground*

*This signal is not isolated on the
DT9800-EC Series.

Gate 0

User Clock Output 0

AC1324 Screw Terminal Panel

TB1
TB3
TB5

TB7

TB9
TB11

TB13
TB15
TB17

TB19
TB21

TB23

TB25

TB2
TB4
TB6
TB8
TB10
TB12

TB14
TB16
TB18
TB20
TB22
TB24

TB26

100

Figure 45: Connecting Frequency Measurement Signals

(Shown for Clock Input 0 and External Gate 0)