Measurement Computing USB-DIO24H/37 - Manual (Page 4)

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Table of Contents
Preface
About this User's Guide ....................................................................................................................... 5
What you will learn from this user's guide ......................................................................................................... 5
Conventions in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1
Introducing the USB-DIO24H/37 .......................................................................................................... 6
Overview: USB-DIO24H/37 features ................................................................................................................. 6
USB-DIO24H/37 block diagram ........................................................................................................................ 6
Software features ................................................................................................................................................ 7
Connecting a USB-DIO24H/37 to your computer is easy .................................................................................. 7
Chapter 2
Installing the USB-DIO24H/37 .............................................................................................................. 8
What comes with your USB-DIO24H/37 shipment? .......................................................................................... 8
Hardware .......................................................................................................................................................................... 8
Additional documentation ................................................................................................................................................. 8
Optional components ........................................................................................................................................................ 8
Unpacking the USB-DIO24H/37 ........................................................................................................................ 9
Installing the software ........................................................................................................................................ 9
Installing the USB-DIO24H/37 .......................................................................................................................... 9
Connecting the USB-DIO24H/37 to your system ............................................................................................................. 9
Connecting the board for I/O operations .......................................................................................................... 10
Connectors and cables......................................................................................................................................................10
Connector pinout..............................................................................................................................................................10
Cables ..............................................................................................................................................................................11
Field wiring, signal termination and conditioning ...........................................................................................................11
Chapter 3
Functional Details ............................................................................................................................... 12
Components ...................................................................................................................................................... 12
37-pin I/O connector ........................................................................................................................................................12
USB connector .................................................................................................................................................................13
LED .................................................................................................................................................................................13
Pull-up resistors ...............................................................................................................................................................13
Power consumption .......................................................................................................................................... 13
Output (source) current limits ..........................................................................................................................................14
Output (sink) current limits ..............................................................................................................................................14
Mechanical Drawings ....................................................................................................................................... 14
Chapter 4
Specifications ...................................................................................................................................... 15
Digital input/output........................................................................................................................................... 15
Counter ............................................................................................................................................................. 16
Data transfer rates ............................................................................................................................................. 16
Power ................................................................................................................................................................ 16
General ............................................................................................................................................................. 17
Environmental .................................................................................................................................................. 17
Mechanical ....................................................................................................................................................... 17
Main connector and pinout ............................................................................................................................... 17
Declaration of Conformity .................................................................................................................. 19