Measurement Computing USB-CTR04 - Manual (Page 3)

Table of Contents
Preface
About this User's Guide ....................................................................................................................... 4
What you will learn from this user's guide ......................................................................................................... 4
Conventions in this user's guide ......................................................................................................................... 4
Where to find more information ......................................................................................................................... 4
Chapter 1
Introducing the USB-CTR04 ................................................................................................................. 5
Functional block diagram ................................................................................................................................... 5
Chapter 2
Installing the USB-CTR04 ..................................................................................................................... 6
Unpacking........................................................................................................................................................... 6
Installing the software ........................................................................................................................................ 6
Installing the hardware ....................................................................................................................................... 6
Chapter 3
Functional Details ................................................................................................................................. 7
External components .......................................................................................................................................... 7
Screw terminals................................................................................................................................................................. 7
LED indicators .................................................................................................................................................................. 8
USB connector .................................................................................................................................................................. 8
Counter I/O and gating ....................................................................................................................................... 8
Counter input modes ......................................................................................................................................................... 9
Debounce filters ...............................................................................................................................................................12
Digital I/O ......................................................................................................................................................... 15
Timer output ..................................................................................................................................................... 16
Trigger input ..................................................................................................................................................... 17
External clock pacing ....................................................................................................................................... 17
Power ................................................................................................................................................................ 17
Ground .............................................................................................................................................................. 17
Mechanical Drawings ....................................................................................................................................... 18
Chapter 4
Specifications ...................................................................................................................................... 19
Counter ............................................................................................................................................................. 19
Timers ............................................................................................................................................................... 20
Digital input/output........................................................................................................................................... 20
External trigger ................................................................................................................................................. 21
External clock input/output............................................................................................................................... 21
Memory ............................................................................................................................................................ 22
Power ................................................................................................................................................................ 22
USB .................................................................................................................................................................. 22
Environmental .................................................................................................................................................. 22
Mechanical ....................................................................................................................................................... 22
Signal connector ............................................................................................................................................... 23
Screw terminal pinout ....................................................................................................................................... 23
Declaration of Conformity .................................................................................................................. 24
3