3
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-231-OEM ............................................................................................................. 6
Functional block diagram ................................................................................................................................... 7
Chapter 2
Installing the USB-231-OEM ................................................................................................................. 8
Unpacking........................................................................................................................................................... 8
Installing the software ........................................................................................................................................ 8
Installing the hardware ....................................................................................................................................... 8
Installing on a Windows platform ..................................................................................................................................... 8
Installing on an Android platform ..................................................................................................................................... 8
Calibrating the hardware..................................................................................................................................... 8
Chapter 3
Functional Details ................................................................................................................................. 9
Analog input acquisition modes ......................................................................................................................... 9
Software paced mode ........................................................................................................................................................ 9
Hardware paced mode....................................................................................................................................................... 9
Board components ............................................................................................................................................ 10
USB connector .................................................................................................................................................................10
Header connector J2 .........................................................................................................................................................10
Signal connections ............................................................................................................................................ 11
Analog input ....................................................................................................................................................................11
Analog output ..................................................................................................................................................................13
Digital I/O ........................................................................................................................................................................15
Trigger input ....................................................................................................................................................................16
Counter input ...................................................................................................................................................................16
USB signals, power (D–, D+, VBUS) ..............................................................................................................................16
Status LED driver (LED) .................................................................................................................................................16
+VO power source ...........................................................................................................................................................17
Ground .............................................................................................................................................................................18
Mechanical drawings ........................................................................................................................................ 19
Chapter 4
Specifications ...................................................................................................................................... 20
Analog input ..................................................................................................................................................... 20
Absolute accuracy (analog input DC voltage measurement accuracy) ............................................................................20
Analog output ................................................................................................................................................... 21
Timebase........................................................................................................................................................... 21
Digital input/output........................................................................................................................................... 21
Digital input .....................................................................................................................................................................22
Digital output ...................................................................................................................................................................22
External digital trigger ...................................................................................................................................... 22
Counter ............................................................................................................................................................. 22
LED electrical characteristics ........................................................................................................................... 23
Memory ............................................................................................................................................................ 23
Power requirements .......................................................................................................................................... 23