Table Of Contents - Measurement Computing USB-1808X User Manual

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-1808X .................................................................................................................. 6
Functional block diagram ................................................................................................................................... 6
Chapter 2
Installing the USB-1808X ...................................................................................................................... 7
Unpacking........................................................................................................................................................... 7
Installing the software ........................................................................................................................................ 7
Installing the hardware ....................................................................................................................................... 7
Calibrating the hardware..................................................................................................................................... 7
Updating firmware .............................................................................................................................................. 7
Chapter 3
Functional Details ................................................................................................................................. 8
External components .......................................................................................................................................... 8
USB connector .................................................................................................................................................................. 8
Screw terminals................................................................................................................................................................. 8
LEDs ................................................................................................................................................................................10
Analog input ..................................................................................................................................................... 10
Channel-Gain queue ........................................................................................................................................................10
Analog output ................................................................................................................................................... 11
Digital I/O ......................................................................................................................................................... 11
Digital input scanning ......................................................................................................................................................11
Pull-up/down configuration .............................................................................................................................................11
Counter input .................................................................................................................................................... 12
Totalize counter mode......................................................................................................................................................13
Period measurement mode ...............................................................................................................................................13
Pulse width measurement mode .......................................................................................................................................13
Quadrature encoder input ................................................................................................................................. 13
Timer output ..................................................................................................................................................... 14
Synchronous I/O - mixing analog, digital, and counter scanning .................................................................... 15
Clock I/O .......................................................................................................................................................... 15
Digital triggering .............................................................................................................................................. 15
Pattern triggering .............................................................................................................................................. 15
Mask option .....................................................................................................................................................................15
Ground .............................................................................................................................................................. 16
Power output ..................................................................................................................................................... 16
Mechanical drawings ........................................................................................................................................ 17
Chapter 4
Specifications ...................................................................................................................................... 18
Analog input ..................................................................................................................................................... 18
Accuracy ........................................................................................................................................................... 19
Analog input DC voltage measurement accuracy ............................................................................................................19
Dynamic performance ......................................................................................................................................................19

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