Measurement Computing USB-1208LS - Default Chapter; Table of Contents

Table of Contents
Preface
About this User's Guide ......................................................................................................................vi
What you will learn from this user's guide ........................................................................................................vi
Conventions in this user's guide ........................................................................................................................vi
Where to find more information ........................................................................................................................vi
Chapter 1
Introducing the USB-1208LS............................................................................................................ 1-1
USB-1208LS block diagram........................................................................................................................... 1-2
Software features ............................................................................................................................................ 1-2
Connecting a USB-1208LS to your computer is easy .................................................................................... 1-3
Chapter 2
Installing the USB-1208LS................................................................................................................ 2-1
What comes with your USB-1208LS shipment? ............................................................................................ 2-1
Hardware ....................................................................................................................................................................... 2-1
Additional documentation.............................................................................................................................................. 2-1
Unpacking the USB-1208LS .......................................................................................................................... 2-1
Installing the software .................................................................................................................................... 2-2
Installing the hardware ................................................................................................................................... 2-2
Chapter 3
Functional Details ............................................................................................................................. 3-1
Theory of operation - analog input acquisition modes ................................................................................... 3-1
Software paced mode..................................................................................................................................................... 3-1
Continuous scan mode ................................................................................................................................................... 3-1
Burst scan mode............................................................................................................................................................. 3-1
External components ...................................................................................................................................... 3-2
USB connector............................................................................................................................................................... 3-2
LED ............................................................................................................................................................................... 3-2
Screw terminal wiring.................................................................................................................................................... 3-3
Main connector and pin out ........................................................................................................................................... 3-3
Analog input terminals (CH0 IN - CH7 IN)................................................................................................................... 3-4
Digital I/O terminals (Port A0 to A7, and Port B0 to B7).............................................................................................. 3-7
Power terminals ............................................................................................................................................................. 3-8
Ground terminals ........................................................................................................................................................... 3-8
Calibration terminal ....................................................................................................................................................... 3-9
Trigger terminal............................................................................................................................................................. 3-9
Counter terminal ............................................................................................................................................................ 3-9
Accuracy......................................................................................................................................................... 3-9
USB-1208LS channel gain queue feature..................................................................................................... 3-12
Chapter 4
Specifications.................................................................................................................................... 4-1
Analog output ................................................................................................................................................. 4-2
Digital input/output......................................................................................................................................... 4-3
External trigger............................................................................................................................................... 4-3
Counter ........................................................................................................................................................... 4-3
Non-volatile memory...................................................................................................................................... 4-3
Power.............................................................................................................................................................. 4-4
General ........................................................................................................................................................... 4-4
Environmental ................................................................................................................................................ 4-4
iv