Measurement Computing USB-202 - Manual (Page 3)

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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-202 ...................................................................................................................... 6
Functional block diagram ................................................................................................................................... 6
Chapter 2
Installing the USB-202 .......................................................................................................................... 7
Unpacking........................................................................................................................................................... 7
Installing the software ........................................................................................................................................ 7
Installing the hardware ....................................................................................................................................... 7
Calibrating the hardware..................................................................................................................................... 7
Factory calibration ............................................................................................................................................................ 7
Field calibration ................................................................................................................................................................ 7
Chapter 3
Functional Details ................................................................................................................................. 8
Analog input acquisition modes ......................................................................................................................... 8
Software paced mode ........................................................................................................................................................ 8
Hardware paced mode....................................................................................................................................................... 8
External components .......................................................................................................................................... 8
Screw terminals................................................................................................................................................................. 9
USB connector .................................................................................................................................................................. 9
LED indicators .................................................................................................................................................................. 9
Signal connections ............................................................................................................................................ 10
Analog input ....................................................................................................................................................................10
External clock I/O ............................................................................................................................................................10
Analog output ..................................................................................................................................................................10
Digital I/O ........................................................................................................................................................................10
Trigger input ....................................................................................................................................................................11
Counter input ...................................................................................................................................................................11
Voltage output .................................................................................................................................................................11
Ground .............................................................................................................................................................................11
Mechanical drawings ........................................................................................................................................ 12
Chapter 4
Specifications ...................................................................................................................................... 14
Analog input ..................................................................................................................................................... 14
Accuracy ........................................................................................................................................................... 14
Analog input DC voltage measurement accuracy ............................................................................................................14
Noise performance ...........................................................................................................................................................15
Analog input calibration ................................................................................................................................... 15
Analog output ................................................................................................................................................... 15
Digital input/output........................................................................................................................................... 16
External digital trigger ...................................................................................................................................... 16
External pacer input/output............................................................................................................................... 17
Counter ............................................................................................................................................................. 18
Memory ............................................................................................................................................................ 18
Power ................................................................................................................................................................ 18