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®
User’s Guide
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OM-DAQ-USB-2401
Multiple Channel USB Data
Acquisition Module
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® ® OMEGAnet Online Service Internet e-mail omega.com info@omega.com Servicing North America: U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford, CT 06907-0047 USA Toll Free: 1-800-826-6342 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec), H7L 5A1 Canada Toll-Free: 1-800-826-6342 TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance: ® U.S.A. and Cana
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OM-DAQ-USB-2400 TABLE OF Multiple Channel USB Data Acquisition Module 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 ........................................................................
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OM-DAQ-USB-2400 TABLE OF Multiple Channel USB Data Acquisition Module CONTENTS Page 5.4 Triggering ................................................................................................... 5-4 5.5 Signal Modes ............................................................................................. 5-4 5.6 System Noise ............................................................................................. 5-6 5.7 Averaging .....................................................
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OM-DAQ-USB-2400 LIST OF Multiple Channel USB Data Acquisition Module FIGURES List of Figures Section Figure Description..............................................................Page Section 1 1-1 IEC Symbols ............................................................... 1-2 1-2 System Components ................................................. 1-3 Section 3 3-1 OM-DAQ-USB-2401 Hardware and Dimensions ... 3-1 3-2 Connection of an OM-DAQ-USB-2401 System to a Computer USB Port ..............
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OM-DAQ-USB-2400 LIST OF Multiple Channel USB Data Acquisition Module FIGURES List of Figures Section Figure Description .............................................................Page 4-25 OM-DAQ-USB-2400 Block Diagram .................... 4-14 4-26 OM-DAQ-USB-2401 Single-ended and Differential Conections to Analog Input Channels Diagram ... 4-16 4-27 Calibration/Scan Arrangement ............................ 4-17 4-28 Thermocouple Wiring ............................................ 4-18 Sectio
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1 Introduction Section 1 - Introduction Please read this manual completely before installing and operating your Omega data acquisition system. It’s important to read and follow all notes, cautions, warnings and safety precautions before operating this device. “Device” refers to your data acquisition unit. 1.1 Precautions � This device is not designed for use in any medical or nuclear applications. � Do not operate this device in flammable or explosive environments. � Never operate with a power
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1 Introduction NOTE: When using OM-DAQ-USB-2401 unit to acquire data, computer energy save modes can cause false data readings. Prior to using the unit, ensure your computer’s energy save mode is disabled. If needed, consult your PC user’s manual to disable energy save (power suspension) modes. 1.2 Safety Warnings and IEC Symbols This device is marked with international safety and hazard symbols in accordance with IEC standards. It is important to read and follow all precautions and instructions
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1 Introduction NOTE: *At highest scan rate, 1000 samples/sec +/- 1% with one channel on, +/- 5% with all channels on. The main items you will be using in your data acquisition system are the OM-DAQ-USB-2401 unit, its USB cable, and power adaptor. POWER ADAPTER (OPTIONAL) OM-DAQ-USB-2401 MODULE USB PC WITH USB CONNECTION (NOT INCLUDED) Figure 1-2. System Components 1-3
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2 Hardware Section 2 - Hardware It is important that you read this manual completely and follow all safety precautions before operating this instrument. 2.1 Package Inspection Remove the packing list and verify that you have received all your equipment. If you have any questions about the shipment, please call our Customer Service Department at 1-800-622-2378 or 203-359-1660. We can also be reached on the Internet at omega.com, e-mail: cservice@omega.com. When you receive the shipment, inspect t
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3 Hardware Setup Section 3 - Hardware Setup 3.1 OM-DAQ-USB-2401 System Components 127 (5.00) 107 (4.20) 97 OM-DAQ-USB-2400 SERIES (3.80) USB DATA ACQUISITION SYSTEM CHANNEL 1 & 2 CHANNEL 3 & 4 ! ANALOG INPUT 12 V OUT ANALOG INPUT 12 V OUT A A C A A C E C A A C A A C E C 1 1 O 2 2 O X O 3 3 O 4 4 O X O H L M H L M C M H L M H L M C M - + 38 EXT (1.5) PWR 9V PWR USB STATUS IND 1.0 A POWER SUPPLY POWER LED STATUS LED DIMENSIONS mm (in) USB PORT Figure 3-1. OM-DAQ-USB-2401 Hardware and Dimensi
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3 Hardware Setup 3.2.1 USB-powered Hubs These hubs draw all power from the host USB connector’s power pins. The power is used for hub internal functions and for the hub’s ports. Each port of a USB-powered hub must be capable of supplying at least 100 mA. 3.2.2 Self-powered Hubs These hubs draw power from a source other than the host USB connector, with exception that they may draw up to 100 mA from their upstream connection for hub internal functions. The external power is used for hub internal
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3 Hardware Setup 3.3 Connecting Your OM-DAQ-USB-2401 Acquisition System to PC NOTE: When using a power adaptor with your DAQ system, be sure to supply power (from the adaptor to the DAQ) before connecting the USB cable. This allows your DAQ to inform the host computer (upon connection of the USB cable) that the unit requires minimal power from the computer. Use an approved high-speed USB cable to connect the DAQ system to one of the host computer’s USB ports. There is no need for an additional p
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3 Hardware Setup 3.4 Connecting Various Hardware Setups ON-DAQ-USB-2401 data acquisition systems range from simple to complex. One example of a simple system is that of one OM-DAQ-USB-2401 connected to a PC’s USB connector. A much more complex system is one that contains 10 OM- DAQ-USB-2401 units and a combination of USB-powered and self-powered hubs. Despite the wide range of possibilities in between, use of the following examples should enable you to properly connect your system. NOTE: In the
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3 Hardware Setup 3.4.2 Connection to USB-powered Hub In this example, two OM-DAQ-USB-2401s are connected by cable to individual ports of a single USB-powered hub. Since the hub receives all its power from the computer’s USB, the hub cannot supply adequate power to the DAQ units. Because of this aspect of insufficient power, each unit is connected to its own power adaptor. POWER ADAPTER POWER ADAPTER USB HUB USB Figure 3-4. Connection to USB-Powered Hub NOTE: The power adaptors used must be capa
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3 Hardware Setup POWER ADAPTER POWER ADAPTER USB HUB USB POWER ADAPTER USB HUB Figure 3-5. Connections to Self-Powered Hub and to USB-Powered Hub NOTE: USB port locations vary from PC to PC. 3.5 OM-DAQ-USB-2401 Mounting The OM-DAQ-USB-2401 mounting kit contains the following accessories: � 2 mounting brackets (to be used for either wall or DIN rail) � 4 long screws (to be used for either wall or DIN rail) � 4 short screws (to be used for the DIN rail) � 2 DIN rail plastic adaptors 3-6
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3 Hardware Setup 3.5.1 OM-DAQ-USB-2401 Wall Mounting In order to mount the OM-DAQ-USB-2401 to the wall, you will need to: 1. Remove the rear screws from the OM-DAQ-USB-2401. 2. Align the mounting brackets with the rear holes on the DAQ unit (make sure that the ears are facing outwards, like in the figure below). 3. Use the longer screws to reconnect the mounting brackets to the body of the enclosure, in the same direction as the screws that were removed from the DAQ unit. 4. Drill 2 holes for #4
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3 Hardware Setup 3.5.2 OM-DAQ-USB-2401 DIN Rail Mounting In order to mount the OM-DAQ-USB-2401 to a DIN-Rail, you will need to: 1. Attach the DIN-rail plastic adaptors to the mounting brackets, using the four shorter screws. 2. Remove the rear screws from the OM-DAQ-USB-2401. 3. Align the mounting brackets with the rear holes on the DAQ unit (make sure that the ears are facing inwards, like in the figure below). 4. Use the longer screws to reconnect the mounting brackets to the body of the enclo
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4 Software Section 4 - Software 4.1 Getting Started The following program files are included on the Omega DAQ Central User Software CD supplied with your data acquisition unit. These files can also be downloaded from the omega.com website should you misplace your CD. � DAQ Central data logging software installer � Omega.DAQ .NET API NOTE: When using Omega DAQ modules to acquire data, computer energy save modes can cause false data readings. Prior to using Omega DAQ modules, ensure your computer’
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4 Software 4.2.2 Software Setup Insert the DAQ Central Software CD that was included with your DAQ unit into the CD-ROM drive on your PC. Your system should begin the installation process automatically. If the software installation does not start automatically: open: "My Computer", double-click your CD-ROM drive, and run "setup.exe". Figure 4-1. Welcome Screen This welcome screen should be visible on your computer screen. To continue with installing the program click the “Next >” button. From t
