user manual

i
OM-DAQ-USB-2400
Multiple Channel USB Data Acquisition Module
TABLE OF
CONTENTS
Page
Section 1 - Introduction ....................................................................... 1-1
1.1 Precautions ................................................................................................ 1-1
1.2 Safety Warnings and IEC Symbols ......................................................... 1-2
1.3 Statement on CE Marking ........................................................................ 1-2
1.4 General Description and System Components .................................... 1-2
Section 2 - Hardware .......................................................................... 2-1
2.1 Package Inspection ................................................................................... 2-1
2.2 Included Items .......................................................................................... 2-1
Section 3 - Hardware Setup ................................................................. 3-1
3.1 OM-DAQ-USB-2400 Components ......................................................... 3-1
3.2 USB Hubs and Power Adaptors ............................................................. 3-1
3.2.1 USB-powered Hubs .................................................................... 3-2
3.2.2 Self-powered Hubs ..................................................................... 3-2
3.2.3 Power Adaptors .......................................................................... 3-2
3.3 Connecting Your OM-DAQ-USB-2401 Acquistition Systems To PC ... 3-3
3.4 Connecting Various Hardware Setups .................................................. 3-4
3.4.1 Direct Connection To Computer USB Port(s) ......................... 3-4
3.4.2 Connection To USB-powered Hub ........................................... 3-5
3.4.3 Connections To Self-powered and USB-powered Hubs ........ 3-5
3.5 OM-DAQ-USB-2401 Mounting .............................................................. 3-6
3.5.1 OM-DAQ-USB-2401 Wall Mounting ........................................ 3-7
3.5.2 OM-DAQ-USB-2401 DIN Rail Mounting ................................ 3-8
Section 4 - Software ............................................................................ 4-1
4.1 Getting Started .......................................................................................... 4-1
4.2 Software Installation ................................................................................ 4-1
4.2.1 System Requirements ................................................................. 4-1
4.2.2 Software Setup ............................................................................. 4-2
4.3 DAQ Central Software Operation .......................................................... 4-4
4.3.1 Main Control Window Pull-Down Operations ...................... 4-6
4.3.2 Device Configuration ................................................................. 4-8
4.4 Power Line Rejection .............................................................................. 4-14
4.5 Optical Isolation ....................................................................................... 4-14
4.6 A/D Conversion ..................................................................................... 4-14
4.7 Input Ranges .................................................................................................... 4-15
4.8 Analog Input Configuration .................................................................. 4-15
4.9 Measurement Duration, Scan Time, and Resolution ......................... 4-16
4.10 Automatic Calibration ...........................................................................4-17
4.11 Thermocouple Measurements ............................................................ 4-18
Section 5 - Signal Management ............................................................ 5-1
5.1 Channel Control and Expansion ............................................................ 5-1
5.2 Scan Time and Resolution ....................................................................... 5-1
5.2.1 Scan Time ..................................................................................... 5-1
5.2.2 Resolution [Effective Number of Bits (ENOB, RMS)] .............5-1
5.3 Under Sampling and Aliasing ................................................................ 5-2