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USB-DIO24/37

Digital Input/Output

User’s Guide

Document Revision 1, July, 2005

© Copyright 2005, Measurement Computing Corporation

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Summary of Contents for USB-DIO24/37

Page 1: ...i ...

Page 2: ...USB DIO24 37 Digital Input Output User s Guide Document Revision 1 July 2005 Copyright 2005 Measurement Computing Corporation ...

Page 3: ...n that is damaged even due to misuse for only 50 of the current list price I O boards face some tough operating conditions some more severe than the boards are designed to withstand When a board becomes damaged just return the unit with an order for its replacement at only 50 of the current list price We don t need to profit from your misfortune By the way we honor this warranty for any manufactur...

Page 4: ... granted by implication or otherwise under any patent or copyrights of 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 Notice Measurement Comput...

Page 5: ...on 2 1 Optional components 2 2 Unpacking the USB DIO24 37 2 2 Installing the software 2 2 Installing the USB DIO24 37 2 3 Connecting the USB DIO24 37 to your system 2 3 Connecting the board for I O operations 2 3 Connectors cables main I O connector 2 3 Pin out main I O connector 2 4 Cables 2 4 Field wiring signal termination and conditioning 2 5 Chapter 3 Functional Details 3 1 Components 3 1 37 ...

Page 6: ...ls and help topic titles and to emphasize a word or phrase For example The InstaCal installation procedure is explained in the Quick Start Guide Never touch the exposed pins or circuit connections on the board Where to find more information The following electronic documents provide information that is relevant to the operation of the USB DIO24 37 MCC s Specifications USB DIO24 37 the PDF version ...

Page 7: ...supply No external power is required All I O connections are made to a 37 pin connector Digital channels are pulled up to 5V with 47k resistors An on board industry standard 82C55 programmable peripheral interface chip provides the 24 discrete digital I O lines in four ports You can configure each digital port independently for either input or output The USB DIO24 37 board is completely plug and p...

Page 8: ...oft HID because it is a standard and its performance delivers full control and maximizes data transfer rates for your USB DIO24 37 No third party device driver is required The USB DIO24 37 is plug and play There are no jumpers to position DIP switches to set or interrupts to configure You can connect the USB DIO24 37 before or after you install the software and without powering down your computer ...

Page 9: ... Data Acquisition Software CD contains the following software InstaCal installation calibration and test utility TracerDAQ suite of virtual instruments SoftWIRE for VS NET SoftWIRE MCC DAQ Components for NET Documentation In addition to this hardware user s guide you should also receive the Quick Start Guide available in PDF at www mccdaq com PDFmanuals DAQ Software Quick Start pdf Please read thi...

Page 10: ...lectronic device you should take care while handling to avoid damage from static electricity Before removing the USB DIO24 37 from its packaging ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge If your USB DIO24 37 arrives already damaged notify Measurement Computing Corporation immediately by phone fax or...

Page 11: ...ost communication with the USB DIO24 37 To restore communication disconnect the USB cable from the computer and then reconnect it This should restore communication and the USB LED should turn back on Caution Do not disconnect any device from the USB bus while the computer is communicating with the USB DIO24 37 or you may lose data and or your ability to communicate with the USB DIO24 37 Connecting...

Page 12: ... GND 5 20 GND 21 Port C Bit 7 22 Port C Bit 6 23 Port C Bit 5 24 Port C Bit 4 25 Port C Bit 3 26 Port C Bit 2 27 Port C Bit 1 28 Port C Bit 0 29 Port A Bit 7 30 Port A Bit 6 31 Port A Bit 5 32 Port A Bit 4 33 Port A Bit 3 34 Port A Bit 2 35 Port A Bit 1 36 Port A Bit 0 37 Figure 2 2 Main I O connector pin out Cables 37 19 20 1 20 1 37 19 37 20 1 20 1 37 19 Figure 2 3 C37FFS x cable 20 1 37 19 20 1...

Page 13: ...n this product are available on our web site at www mccdaq com cbicatalog cbiproduct asp dept_id 123 pf_id 240 CIO SERB08 8 Form C relays 10 Amp relay accessory board with socketed and field replaceable relays Details on this product are available on our web site at www mccdaq com cbicatalog cbiproduct asp dept_id 123 pf_id 680 CIO ERB24 24 Form C 6A relays Details on this product are available on...

Page 14: ...ou can configure 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 to high The counter can count frequencies of up to 1 MHz The six ground GND connections are identical and provide a common ground for all USB DIO24 37 functions The two power connectio...

Page 15: ...tart 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 difference between the total current requirement of the USB DIO24 37 based on the application and the allowed current draw of the PC platform 500 mA for desktop PCs and self powered hubs or 100 mA for ...

Page 16: ...max Power up reset state Input mode Counter Table 4 2 Counter specifications Pin name Note 1 CTR Counter type Event counter Number of channels 1 Input source CTR screw terminal Resolution 32 bits Schmidt trigger hysteresis 20 mV to 100 mV Input leakage current 1 µA Maximum input frequency 1 MHz High pulse width 500 ns min Low pulse width 500 ns min Input low voltage 0 V min 1 0 V max Input high vo...

Page 17: ...owered refers to USB hubs and hosts without their own power supply This refers to the total amount of current that can be sourced from the USB 5V and digital outputs General Table 4 5 General specifications Parameter Conditions Specification 25 C 30 ppm max USB controller clock error 0 to 70 C 50 ppm max Device type USB 1 1 low speed Device compatibility USB 1 1 USB 2 0 Environmental Table 4 6 Env...

Page 18: ...RB08 CIO ERB24 CIO SPADE50 SSR RACK08 SSR RACK24 Table 4 9 Connector pin out 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 Bit 6 23 Port C Bit 6 5 Port B Bit 5 24 Port C Bit 5 6 Port B Bit 4 25 Port C Bit 4 7 Port B Bit 3 26 Port C Bit 3 8 Port B Bit 2 27 Port C Bit 2 9 Port B Bit 1 28 Port C Bit 1 10 Port B Bit 0 29 Port C Bit 0 11 GND 30 Port A Bi...

Page 19: ...lating to electromagnetic compatibility EN 55022 Class B 1995 Radiated and conducted emission requirements for information technology equipment ENV 50204 1995 Radio frequency electromagnetic field immunity EN 55024 1998 EC generic immunity requirements EN 50082 1 1997 EC generic immunity requirements EN 61000 4 2 1995 Electrostatic discharge immunity EN 61000 4 3 1997 ENV 50204 1996 RF immunity EN...

Page 20: ...Measurement Computing Corporation 16 Commerce Boulevard Middleboro Massachusetts 02346 508 946 5100 Fax 508 946 9500 E mail info mccdaq com www mccdaq com ...

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