Measurement Computing USB-1608HS-2AO - Manual (Page 5)

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Table of Contents
Preface
About this User's Guide ....................................................................................................................... 7
What you will learn from this user's guide ......................................................................................................... 7
Conventions in this user's guide ......................................................................................................................... 7
Where to find more information ......................................................................................................................... 7
Chapter 1
Introducing the USB-1608HS-2AO ...................................................................................................... 8
USB-1608HS-2AO block diagram ..................................................................................................................... 9
Software features ................................................................................................................................................ 9
Chapter 2
Installing the USB-1608HS-2AO ........................................................................................................ 10
What comes with your USB-1608HS-2AO shipment? ..................................................................................... 10
Hardware .........................................................................................................................................................................10
Additional documentation ................................................................................................................................................11
Unpacking the USB-1608HS-2AO ................................................................................................................... 11
Installing the software ...................................................................................................................................... 11
Installing the hardware ..................................................................................................................................... 11
Connecting the AC power adapter ...................................................................................................................................11
Connecting the USB-1608HS-2AO to your system .........................................................................................................11
Calibrating the USB-1608HS-2AO .................................................................................................................. 12
Chapter 3
Functional Details ............................................................................................................................... 13
Theory of operation - analog input acquisition modes ..................................................................................... 13
Software paced mode .......................................................................................................................................................13
Continuous scan mode .....................................................................................................................................................13
External components ........................................................................................................................................ 13
USB active LED (ACT) ...................................................................................................................................................14
Power LED (PWR) ..........................................................................................................................................................14
Main connector and pin out .............................................................................................................................................14
USB connector .................................................................................................................................................................14
Power connector ..............................................................................................................................................................15
Analog input terminals (CH0_L - CH7_H) ......................................................................................................................15
Analog voltage output terminals (VDAC0_F, VDAC0_S, VDAC1_F, and VDAC1_S) .................................................17
Analog ground terminals ..................................................................................................................................................18
Digital input terminals (DI0 to DI7) and digital output terminals (DO0 to DO7) ............................................................18
Power terminal (+5V EXT) .............................................................................................................................................19
Counter terminal (CTR) ...................................................................................................................................................19
SYNC terminals (SYNC_IN and SYNC_OUT) ..............................................................................................................20
Trigger terminal (TRIG_IN) ............................................................................................................................................20
Common ground terminals (GND) ..................................................................................................................................23
Chapter 4
Specifications ...................................................................................................................................... 24
Analog input ..................................................................................................................................................... 24
Analog output ................................................................................................................................................... 26
Analog input calibration ................................................................................................................................... 27
Digital input/output........................................................................................................................................... 27
External trigger ................................................................................................................................................. 27
External clock input/output............................................................................................................................... 28
Counter ............................................................................................................................................................. 28