Measurement USB-5100 User Manual

USB-3110

USB-based Analog Output

User Guide

Document Revision 4, January, 2011

© Copyright 2011, Measurement Computing Corporation

HM USB-3110.doc

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Table of Contents

Preface

About this User's Guide ....................................................................................................................... 6

What you will learn from this user's guide ......................................................................................................... 6

Conventions in this user's guide ......................................................................................................................... 6

Where to find more information ......................................................................................................................... 6

Chapter 1

Introducing the USB-3110 .................................................................................................................... 7

Overview: USB-3110 features ........................................................................................................................... 7

USB-3110 block diagram ................................................................................................................................... 8

Software features ................................................................................................................................................ 8

Chapter 2

Installing the USB-3110 ........................................................................................................................ 9

What comes with your USB-3110 shipment? .................................................................................................... 9

Hardware .......................................................................................................................................................................... 9

Additional documentation ................................................................................................ ................................................10

Unpacking the USB-3110................................................................................................................................. 10

Installing the software ...................................................................................................................................... 10

Installing the hardware ..................................................................................................................................... 10

Connecting the AC power adapter ...................................................................................................................................10

Connecting the USB-3110 to your system .......................................................................................................................11

Calibrating the USB-3110 ................................................................................................................................ 11

Chapter 3

Functional Details ............................................................................................................................... 12

External components ........................................................................................................................................ 12

USB connector .................................................................................................................................................................12

USB LED ................................................................................................................................ .........................................12

Power connector ..............................................................................................................................................................12

Power LED ......................................................................................................................................................................13

Screw terminal banks .......................................................................................................................................................13

Analog voltage output terminals (VOUT0 to VOUT3) ...................................................................................................14

Digital I/O terminals (DIO0 to DIO7) .............................................................................................................................14

Digital I/O control terminal (DIO CTL) for pull-up/down configuration ........................................................................15

Ground terminals (AGND, DGND) .................................................................................................................................15

Synchronous DAC load terminal (SYNCLD) ..................................................................................................................15

Counter terminal (CTR) ...................................................................................................................................................15

Power terminal (+5V) ......................................................................................................................................................15

Synchronizing multiple units ............................................................................................................................ 16

Mechanical drawings ........................................................................................................................................ 17

Chapter 4

Specifications ...................................................................................................................................... 18

Analog voltage output ...................................................................................................................................... 18

Analog output calibration ................................................................................................................................. 19

Digital input/output .......................................................................................................................................... 20

Synchronous DAC Load................................................................................................................................... 20

Counter ............................................................................................................................................................. 21

Memory ............................................................................................................................................................ 21

Microcontroller ................................................................................................................................................. 21

Power ................................................................................................................................ ................................ 21

4

USB-3110 User's Guide

USB specifications ........................................................................................................................................... 22

Environmental .................................................................................................................................................. 22

Mechanical ....................................................................................................................................................... 22

Main connector and pin out .............................................................................................................................. 23

Declaration of Conformity .................................................................................................................. 24

5

About this User's Guide

What you will learn from this user's guide

This user's guide describes the Measurement Computing USB-3110 data acquisition device and lists the
specifications.

Conventions in this user's guide

For more information on …

Text presented in a box signifies additional information and helpful hints related to the subject matter you are
reading.

Caution! Shaded caution statements present information to help you avoid injuring yourself and others,

damaging your hardware, or losing your data.

bold text Bold text is used for the names of objects on a screen, such as buttons, text boxes, and check boxes.

Preface

italic text Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase.

Where to find more information

For additional information relevant to the operation of your hardware, refer to the Documents subdirectory
where you installed the MCC DAQ software (C:\Program Files\Measurement Computing\DAQ by default), or
search for your device on our website at www.mccdaq.com.

6

Chapter 1

Introducing the USB-3110

Overview: USB-3110 features

This user's guide contains all of the information you need to connect the USB-3110 to your computer and to the
signals you want to measure. The USB-3110 is part of the Measurement Computing brand of USB-based data
acquisition products.

The USB-3110 is a USB 2.0 full-speed, high-drive device that is supported under popular Microsoft®
Windows® operating systems. The USB-3110 is fully compatible with both USB 1.1 and USB 2.0 ports.

The USB-3110 provides four channels of analog voltage output, eight digital I/O connections, and one 32-bit
event counter.

Each of the voltage outputs of the USB-3110 incorporates high-drive current output capability. The high drive
current outputs allow each of the voltage outputs to sink/source up to 40 mA (maximum) of load current.

Caution! The USB-3110 voltage outputs should not be kept in a short-circuit condition for longer than the

specified 100 ms. For those applications that may potentially exceed the 40 mA maximum current
limit or the 100 ms short-circuit condition, external current limiting must be used to prevent
potential damage to the USB-3110.

The USB-3110 has a quad (4-channel) 16-bit digital-to-analog converter (DAC). You set the voltage output
range of each DAC channel independently with software for either bipolar (±10 V) or unipolar (0 to 10 V). The
analog outputs may be updated individually or simultaneously.

The USB-3110 features eight bidirectional digital I/O connections. You can configure the DIO lines as input or
output in one 8-bit port. All digital pins are floating by default. A screw terminal connection is provided for
pull-up (+5 V) or pull-down (0 volts) configuration.

The 32-bit counter can count TTL pulses. A bidirectional synchronization connection allows you to
simultaneously update the DAC outputs on multiple devices.

The USB-3110 is powered by a 5 volt, 2 amp AC power adapter that is shipped with the board. All I/O
connections are made to the screw terminals located along each side of the USB-3110.

Figure 1. USB-3110

7

USB-3110 User's Guide Introducing the USB-3110

USB-3110 block diagram

USB-3110 functions are illustrated in the block diagram shown here.

Figure 2. USB-3110 block diagram

Software features

For information on the features of InstaCal and the other software included with your USB-3110, refer to the
Quick Start Guide that shipped with your device.

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