Omega OM-USB-3101 User Manual

4-channel analog output usb data acquisition module

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Summary of Contents for Omega OM-USB-3101

  • Page 1 This datasheet has been downloaded from http://www.digchip.com at this page...
  • Page 3: Table Of Contents

    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 OM-USB-3101 ......................5 Functional block diagram ........................... 5 Chapter 2 Installing the OM-USB-3101 ......................... 6 What comes with your shipment? ........................
  • Page 4: Preface

    Preface About this User's Guide What you will learn from this user's guide This user's guide describes the Omega Engineering OM-USB-3101 data acquisition device and lists device specifications. Conventions in this user's guide For more information Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading.
  • Page 5: Introducing The Om-Usb-3101

    (+5 V) or pull-down (0 volts) configuration. The 32-bit counter can count TTL pulses. The OM-USB-3101 is powered by the +5 volt USB supply from your computer. No external power is required. All I/O connections are made to screw terminals.
  • Page 6: Installing The Om-Usb-3101

    Installing the hardware Install the software before you install your device The driver needed to run the OM-USB-3101 is installed when you install the software. Therefore, you need to install the software before you install the hardware. To connect the OM-USB-3101 to your system, connect the USB cable to an available USB port on the computer or to an external USB hub connected to the computer.
  • Page 7: Calibrating The Om-Usb-3101

    OM-USB-3101 User's Guide Installing the OM-USB-3101 Calibrating the OM-USB-3101 The OM-USB-3101 is shipped fully calibrated. Calibration coefficients are stored in the device FLASH memory. Return the device to Omega Engineering when calibration is required. The normal calibration interval is once per year.
  • Page 8: Chapter 3 Functional Details

     LED indicates the communication status of the OM-USB-3101. It blinks when data is being Status transferred, and is off when the OM-USB-3101 is not communicating. This LED uses up to 10 mA of current and cannot be disabled. ...
  • Page 9: Signal Connections

    OM-USB-3101 User's Guide Functional Details Figure 3. OM-USB-3101 signal pinout Use 16 AWG to 30 AWG wire gauge when making screw terminal connections. Signal connections Analog voltage outputs The screw terminal pins labeled are voltage output terminals. The voltage output range for...
  • Page 10: Synchronous Dac Load

    Refer to the Universal Library User's Guide for information on how to configure the OM-USB-3101 with the Universal Library. When the SYNCLD pin on the slave device receives the signal, the analog output channels on each device are updated simultaneously.
  • Page 11: Chapter 4 Specifications

    Single-channel 100 Hz max., system dependent Multi-channel 100 Hz/#ch max., system dependent The OM-USB-3101 output voltage level defaults to 0V whenever the output voltage range is Note 1: reconfigured. The OM-USB-3101 output voltage level will also default to 0V: 1) Whenever the host PC is reset, shut down or suspended.
  • Page 12: Analog Output Calibration

    The maximum differential non-linearity specification applies to the entire 0 to 70 °C temperature range Note 3: of the OM-USB-3101. This specification also accounts for the maximum errors due to the software calibration algorithm (in Calibrated mode only) and the DAC8554 digital to analog converter non- linearities.
  • Page 13: Synchronous Dac Load

    OM-USB-3101 User's Guide Specifications Synchronous DAC Load Table 7. SYNCLD I/O specifications Parameter Conditions Specification Pin name SYNCLD (terminal block pin 49) Power on and reset state Input Pin type Bidirectional Termination Internal 100K ohms pull-down Software selectable direction Output Outputs internal D/A LOAD signal.
  • Page 14: Memory

    Available at terminal block pin 56 10 mA max. This is the total quiescent current requirement for the OM-USB-3101 which includes up to 10 mA for Note 7: the status LED. This does not include any potential loading of the digital I/O bits, +5V user terminal, or the VOUTx outputs.
  • Page 15: Main Connector And Pinout

    OM-USB-3101 User's Guide Specifications Main connector and pinout Table 15. Main connector specifications Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Signal Name Signal Name VOUT0 VOUT1 VOUT2 VOUT3 AGND AGND AGND AGND AGND AGND AGND...

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