Measurement Computing USB-1608GX User Manual

Measurement Computing USB-1608GX User Manual

Multifunction daq device
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USB-1608GX
Multifunction DAQ Device
January 2019. Rev 2
© Measurement Computing
User's Guide

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Summary of Contents for Measurement Computing USB-1608GX

  • Page 1 USB-1608GX Multifunction DAQ Device User's Guide January 2019. Rev 2 © Measurement Computing...
  • Page 2 Other product and company names mentioned herein are trademarks or trade names of their respective companies. © 2019 Measurement Computing Corporation. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by photocopying, recording, or otherwise without the prior written permission of Measurement Computing Corporation.
  • Page 3: Table Of Contents

    What you will learn from this user's guide ......................5 Conventions in this user's guide ......................... 5 Where to find more information ......................... 5 Chapter 1 Introducing the USB-1608GX ....................... 6 Functional block diagram ........................... 6 Chapter 2 Installing the USB-1608GX ........................7 Unpacking................................
  • Page 4 USB-1608GX User's Guide Timer ................................20 Memory ................................20 Power ................................20 USB .................................. 20 Environmental ..............................21 Mechanical ............................... 21 Screw terminal connector ..........................21 Differential mode pinout ..............................21 Single-ended mode pinout ...............................22 EU Declaration of Conformity ......................23...
  • Page 5: Preface

    Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. Where to find more information Additional information about the USB-1608GX is available on our website at www.mccdaq.com. You can also contact Measurement Computing Corporation by phone, fax, or email with specific questions.
  • Page 6: Introducing The Usb-1608Gx

    USB cable is shipped with the device. The USB-1608GX device is compatible with both USB 1.1 and USB 2.0 ports. The speed of the device may be limited when using a USB 1.1 port due to the difference in transfer rates on the USB 1.1 versions of the protocol (low-speed and full-speed).
  • Page 7: Installing The Usb-1608Gx

    Installing the hardware To connect a USB-1608GX to your system, turn on your computer and connect the USB cable to an available USB port on the computer or to an external USB hub connected to the computer. Connect the other end of the USB cable to the USB connector on the device.
  • Page 8: Functional Details

    Chapter 3 Functional Details Analog input modes The USB-1608GX device can acquire analog input data in two basic modes – software paced and hardware paced. Software paced You can acquire one analog sample at a time in software paced mode. You initiate the A/D conversion with a software command.
  • Page 9: External Components

    USB-1608GX User's Guide Functional Details External components The USB-1608GX has the following external components (see Figure 3): USB connector  LEDs  Screw terminals  Screw terminal pins 1 to 27 Activity LED Screw terminal pins 28 to 54 USB connector Status LED Figure 3.
  • Page 10 USB-1608GX User's Guide Functional Details Figure 4. SE mode pinout Figure 5. DIFF mode pinout...
  • Page 11: Signal Connections

    Figure 6. DIFF connections with ground path resistor Channel-gain queue The USB-1608GX channel-gain queue feature allows you to configure a list of channels, modes, and gains for each scan. The settings are stored in a channel-gain queue list that is written to local memory on the device.
  • Page 12: External Clock I/O

    USB-1608GX User's Guide Functional Details An example of a 4-element list is shown in the table below. Sample channel-gain queue list Element Channel Range Mode BIP5V BIP10V DIFF CH15 BIP1V BIP5V Carefully match the gain to the expected voltage range on the associated channel or an over range condition may occur.
  • Page 13: Trigger Input

    USB-1608GX User's Guide Functional Details Configure jumper for either pull-up or pull-down. The jumper is configured by default for pull-down. Figure 8 shows the location of the jumper on the board. Figure 8. W1 jumper location Figure 9 shows the jumper configured for pull-up and pull-down.
  • Page 14: Timer Output

    USB-1608GX User's Guide Functional Details Timer output terminal is a pulse width modulation (PWM) timer output that can generate a pulse output with a programmable frequency in the range of 0.0149 Hz to 32 MHz. The timer output parameters are software selectable.
  • Page 15: Mechanical Drawings

    USB-1608GX User's Guide Functional Details Mechanical drawings Figure 11. USB-1608GX circuit board (top) and enclosure dimensions...
  • Page 16: Specifications

    Chapter 4 Specifications All specifications are subject to change without notice. Typical for 25 °C unless otherwise specified. Specifications in italic text are guaranteed by design. Analog input Table 1. General analog input specifications Parameter Condition Specification A/D converter type Successive approximation ADC resolution 16 bits...
  • Page 17: Accuracy

    USB-1608GX User's Guide Specifications Accuracy Analog input DC voltage measurement accuracy Table 2. DC Accuracy components and specifications. All values are (±) Absolute Gain Offset accuracy at temperature temperature Gain error Offset error INL error Full Scale coefficient coefficient Range (% of reading) (µV)
  • Page 18: Digital Input/Output

    USB-1608GX User's Guide Specifications Digital input/output Table 6. Digital I/O specifications Parameter Specification Digital type CMOS Number of I/O Configuration Each bit may be configured as input (power on default) or output Pull-up configuration The port has 47 kΩ resistors configurable as pull-ups or pull-downs (default) via internal jumper (W1).
  • Page 19: External Clock Input/Output

    USB-1608GX User's Guide Specifications External clock input/output Table 8. External clock I/O specifications Parameter Specification Terminal names AICKI, AICKO Terminal types AICKI: Input, active on rising edge AICKO: Output, power on default is 0 V, active on rising edge Terminal descriptions...
  • Page 20: Timer

    USB-1608GX User's Guide Specifications Timer Table 10. Timer specifications Parameter Specification Terminal name Timer type PWM output with count, period, delay, and pulse width registers Output value Default state is idle low with pulses high, software-selectable output invert Internal clock frequency...
  • Page 21: Environmental

    USB-1608GX User's Guide Specifications Environmental Table 14. Environmental specifications Parameter Specification Operating temperature range 0 °C to 55 °C max Storage temperature range –40 °C to 85 °C max Humidity 0% to 90% non-condensing max Mechanical Table 15. Mechanical specifications...
  • Page 22: Single-Ended Mode Pinout

    USB-1608GX User's Guide Specifications Single-ended mode pinout Table 18. 16-channel single-ended mode pinout Signal name Pin description Signal name Pin description AI channel 0 CH15 AI channel 15 AI channel 8 AI channel 7 AGND Analog ground AGND Analog ground...
  • Page 23: Eu Declaration Of Conformity

    July 21, 2016, Norton, Massachusetts USA Test Report Number: EMI5736.10 Measurement Computing Corporation declares under sole responsibility that the product USB-1608GX is in conformity with the relevant Union Harmonization Legislation and complies with the essential requirements of the following applicable European Directives:...
  • Page 24 Measurement Computing Corporation NI Hungary Kft 10 Commerce Way H-4031 Debrecen, Hátar út 1/A, Hungary Norton, Massachusetts 02766 Phone: +36 (52) 515400 (508) 946-5100 Fax: +36 (52) 515414 Fax: (508) 946-9500 http://hungary.ni.com/debrecen E-mail: info@mccdaq.com www.mccdaq.com...

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