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USB-DIO24/37

24-Channel Digital I/O USB Device

User's Guide

May 2019. Rev 4
© Measurement Computing Corporation

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Summary of Contents for USB-DIO24

Page 1: ...USB DIO24 37 24 Channel Digital I O USB Device User s Guide May 2019 Rev 4 Measurement Computing Corporation...

Page 2: ...in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporatio...

Page 3: ...6 Installing the software 6 Installing the hardware 6 Connecting the board for I O operations 6 Connectors and cables 6 Field wiring signal termination and conditioning 7 Chapter 3 Functional Details...

Page 4: ...or losing your data bold text Bold text is used for the names of objects on the screen such as buttons text boxes and check boxes italic text Italic text is used for the names of manuals and help topi...

Page 5: ...gital I O and one 32 bit external event counter The device is powered by the 5 volt USB supply No external power is required All I O connections are made to a 37 pin connector Digital channels are pul...

Page 6: ...ernal USB hub connected to the computer When you connect the USB DIO24 37 for the first time multiple Found New Hardware popup balloons open when the operating system detects the device When installat...

Page 7: ...lable in the Guide to DAQ Signal Connections available for download from www mccdaq com support DAQ Signal Connections aspx Figure 3 C37FF x cable Field wiring signal termination and conditioning Refe...

Page 8: ...each port independently for input default or output The CTR signal is the input to the 32 bit external event counter The internal counter increments when the digital input level transitions from low t...

Page 9: ...t running applications with the USB DIO24 37 each DIO bit can draw up to 2 5 mA The maximum amount of 5V current available for external use over and above that required by the USB DIO24 37 is the diff...

Page 10: ...USB DIO24 37 User s Guide Functional Details 10 Mechanical Drawings Figure 5 Circuit board dimensions...

Page 11: ...are selectable via zero resistor Input high voltage 2 0 V min 5 5 V absolute max Input low voltage 0 8 V max 0 5 V absolute min Output high voltage IOH 2 5 mA 3 0 V min Output low voltage IOH 2 5mA 0...

Page 12: ...min 5 25 V max Output current Note 4 Connected to self powered hub 460 mA max Connected to bus powered hub 60 mA max Note 2 This is the total current requirement for the USB DIO24 37which includes up...

Page 13: ...pin D type Compatible cables C37FF x unshielded ribbon cable x length in feet Table 9 Connector pinout Pin Signal Name Pin Signal Name 1 CTR 20 5 2 NC 21 GND 3 Port B Bit 7 22 Port C Bit 7 4 Port B Bi...

Page 14: ...tibility EN 61326 1997 Amendment 1 1998 Emissions Group 1 Class A EN 55011 1990 CISPR 11 Radiated and Conducted emissions Immunity EN61326 Annex A IEC 61000 4 2 1995 Electrostatic Discharge immunity C...

Page 15: ...ion NI Hungary Kft 10 Commerce Way H 4031 Debrecen H tar t 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...

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