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Chapter 1 

Introducing the CIO-EXP16 

Overview: CIO-EXP16 features 

The CIO-EXP16 is a 16-channel signal conditioning accessory board supported under popular Microsoft

®

 

Windows

®

 operating systems. 

The CIO-EXP16 is used to expand the number of analog inputs and the range of amplification of DAS08 and 
DAS16 series boards. Using multiple CIO-EXP16 boards, a 16 channel A/D board can be expanded to up to 
256 inputs; an 8 channel A/D board can be expanded to up to 128 inputs. 

The CIO-EXP16 board has 16 differential inputs that are multiplexed into one single-ended output channel. 
Four digital inputs are controlled by the A/D board's digital outputs, and are used to select one of the 
multiplexed channels for output. An on-board semiconductor sensor provides a cold junction compensation 
(CJC) reference for thermocouple applications.  

You select one channel on the A/D board to send the multiplexed analog output to. In addition, you can output 
the CJC signal to a second A/D board channel. You can enable an input filter, ground reference, and open 
thermocouple detect options for each channel using on-board solder gap switches. You specify the gain of the 
multiplexer with an onboard gain switch. 

You can power the CIO-EXP16 internally from the A/D board, or externally from the computer's +5 V power 
supply connectors. 

The CIO-EXP16 board is mounted externally to the PC. It can be placed in the open on a benchtop or in a case. 

Software features 

For information on the features of 

Insta

Cal and the other software included with your CIO-EXP16, refer to the 

Quick Start Guide

 that shipped with your device. The 

Quick Start Guide

 is also available in PDF at 

www.mccdaq.com/PDFmanuals/DAQ-Software-Quick-Start.pdf

Check 

www.mccdaq.com/download.htm

 for the latest software version. 

Summary of Contents for CIO-EXP16

Page 1: ......

Page 2: ...CIO EXP16 Analog Multiplexer board User s Guide Document Revision 1 January 2007 Copyright 2007 Measurement Computing Corporation ...

Page 3: ...p it These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from...

Page 4: ...rom its use No license is 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 ...

Page 5: ...figuring the CIO EXP16 12 Power source 13 A D board type 15 A D Channel for EXP Output 15 EXP Gain 16 Solder gap switches 16 Configuring the A D board 17 Single ended mode 17 Range 17 Polarity 17 Calibrating the CIO EXP16 17 Chapter 3 Functional Details 18 CIO EXP16 inputs 18 Connecting to a signal source 18 Thermocouples 19 Cold junction compensation 20 Open thermocouple detect 20 Low pass filter...

Page 6: ...CIO EXP16 User s Guide Digital input 24 Power consumption 24 Environmental 24 Main connector and pin out 25 6 ...

Page 7: ... names of manuals 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 helpful information relevant to the operation of the CIO EXP16 MCC s Specifications CIO EXP16 the PDF...

Page 8: ...CJC reference for thermocouple applications You select one channel on the A D board to send the multiplexed analog output to In addition you can output the CJC signal to a second A D board channel You can enable an input filter ground reference and open thermocouple detect options for each channel using on board solder gap switches You specify the gain of the multiplexer with an onboard gain switc...

Page 9: ...EXP2DAS16 10 C PCPOWER 10 BP POWER Additional 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 This booklet supplies a brief description of the software you received with your CIO EXP16 and information regarding installation of that software Please read this booklet compl...

Page 10: ...oards together Do not exceed 50 feet in length Signals may be connected from the CIO EXP16 board to the A D board through one of two types of cables The cable used depends upon the type of A D board you are connecting to The table below lists the CIO EXP16 board s connectors and compatible cables Board connector cables and accessory equipment Connector type P1 and P2 37 pin D type connector Compat...

Page 11: ...cting to a DAS16 Series A D Board Set the A D BOARD TYPE jumper to the DAS16 position Connection to a DAS16 series board requires a special 37 conductor cable C EXP2DAS16 10 since the pin relationship of the CIO EXP16 and DAS16 signals is not 1 1 Refer to the table below C EXP2DAS16 10 cable pin out C EXP2DAS16 10 cable pin out P1 MUX P2 7 23 8 4 9 22 10 3 11 11 12 12 13 13 14 14 15 15 16 16 17 17...

Page 12: ...DAS08 EXP OUTPUT TO DAS jumper Selects the A D board channel to connect the multiplexed analog output to 0 EXP multiplexed output connects to channel 0 on the A D board CJC OUTPUT TO DAS jumper Selects the A D board channel to connect the CJC output to 7 CJC circuit connects to channel 7 on the A D board GAIN switches S1 Four DIP switches that set the gain of the differential amplifier Gain 1 all ...

Page 13: ...supply 5V DC power to the via the 37 conductor cable from the A D board in the PC internal or via a separate optional power cable connected directly to the PC power supply external The internal method is adequate for powering up to five CIO EXP16 boards Supply external power connect the C PCPOWER 10 power cable when More than five CIO EXP16 boards are used with one A D board The A D board in use d...

Page 14: ...nalog board Power cable J3 to PC Power Supply Personal Computer CIO EXP16 3 Run the power cable out the back of the computer through an expansion slot or other opening and replace the cover on the computer You can alternatively connect the C PCPOWER 10 to a BP POWER adaptor to bring PC power out of the computer This adaptor provides three standard power connectors mounted on a backplate Details on...

Page 15: ...er blocks shows the layout of the jumper blocks on the CIO EXP16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 EXP OUTPUT TO DAS CJC OUTPUT TO DAS DAS8 16 DAS16 ONLY These jumpers are for boards with 16 channels only such as the CIO DAS16 in 16 channel mode The CIO EXP16 has 16 input channels multiplexed into one output This output is connected to the jumper block labeled EXP OUTPUT TO DAS This jumper blo...

Page 16: ... shipped with all switches off gain 1 The switch shown in Figu is configured for a gain of 700 500 200 For most thermocouple applications the gain should be set to at least 100 Refer to the section on page 20 for data on setting optimum amplifier gains when using thermocouples Amplification and thermocouples For most other applications the gain should be set to result in output signal levels as cl...

Page 17: ...S08 series have differential inputs that can be converted to single ended inputs Refer to the user s manual for your hardware for information on conversion to single ended inputs DAS16 setup The input mode of the A D board must be single ended to be compatible with the CIO EXP16 outputs Most of the DAS16 series is switch selectable for either 8 differential or 16 single ended inputs When used with...

Page 18: ...s selected by the four MUX address lines that are controlled by the A D board MUX HI 507 MUX HI 507 CH15 HIGH CH15 LOW CH8 HIGH CH8 LOW CH7 HIGH CH7 LOW CH0 HIGH CH0 LOW GND GND Gain Switch Gain Switch 4 EXP out to the DAS board Ground AMP INA1 10 MUX ADDR Connecting to a signal source You can connect analog inputs to the CIO EXP16 in either a floating differential or differential configuration Be...

Page 19: ...his is a laboratory instrument with its own wall plug where there are sometimes differences in wall grounds between outlets Information on signal connections For general information about signal connection and configuration refer to the Guide to Signal Connections on our web site at www mccdaq com signals signals pdf Thermocouples A thermocouple is made of two dissimilar wires that react electrica...

Page 20: ... low pass filter is implemented by closing the C pad When bridged a 1 µF capacitor is connected across the signal s high and low inputs forming a low pass filter The bandwidth of this filter is 7 Hz Signals changing at rates greater than 7 times per second are damped The low pass filter helps to reject noise picked up along the thermocouple wire Since temperature measurement is generally a low fre...

Page 21: ...able below lists the maximum readable temperatures for each gain and thermocouple type for an A D range of 5V Gain vs maximum readable temperatures Type Gain Max Readable Temps with A D Range 5 V 10 100 200 300 500 800 J MAX MAX 457 C 307 C 186 C 117 C K MAX 1232 C 602 C 406 C 246 C 152 C T MAX MAX MAX 330 C 214 C 140 C E MAX 661 C 350 C 244 C 152 C 98 C S MAX MAX MAX MAX 1035 C 697 C R MAX MAX MA...

Page 22: ... User s Guide available on our web site at www mccdaq com PDFmanuals sm ul user guide pdf Packaged applications programs Many packaged application programs now have drivers for your board If the package you own does not have drivers for your board please fax or e mail the package name and the revision number from the install disks We will research the package for you and advise how to obtain drive...

Page 23: ...1 max Gain 100 0 002 typical 0 01 max Gain 200 0 003 typical 0 01 max Gain 500 0 005 typical 0 02 max Temperature coefficient Gain 1 20 ppm C Gain 10 20 ppm C Gain 100 40 ppm C Gain 200 60 ppm C Gain 500 100 ppm C Offset 15 µV C Common mode range 10 V CMRR 60 Hz 90 dB Input filter 7 Hz selectable through solder bridge C pad Open thermocouple detect 50 mV at positive input when thermocouple is open...

Page 24: ...g input specifications Parameter Specification Digital input 74LS14 Configuration Four bits for selecting multiplexer channel 0 through 15 Number of channels 4 input Input high 2 0 volts min 7 volts absolute max Input low 0 8 volts max 0 5 volts absolute min Power consumption Table 5 Power consumption specifications Parameter Specification 5 V 120 mA typical 155 mA max Environmental Table 6 Enviro...

Page 25: ...DAS08 board C EXP2DAS16 10 connecting to a DAS16 board Table 8 Connector pin out Pin Signal Name Pin Signal Name 1 12V PC Bus 20 12V PC Bus 2 NC 21 NC 3 NC 22 NC 4 NC 23 NC 5 NC 24 NC 6 NC 25 NC 7 MUX Addr 1 26 NC 8 MUX Addr 2 27 NC 9 MUX Addr 3 28 Power GND 10 MUX Addr 4 29 5V 11 Output 15 30 Output 7 12 Output 14 31 Output 6 13 Output 13 32 Output 5 14 Output 12 33 Output 4 15 Output 11 34 Outpu...

Page 26: ...C Electromagnetic Compatibility EN55022 1987 EN50082 1 Emissions Group 1 Class B EN55022 1987 Radiated and Conducted emissions Immunity EN50082 1 IEC 801 2 1987 Electrostatic Discharge immunity Criteria A IEC 801 3 1984 Radiated Electromagnetic Field immunity Criteria A IEC 801 4 1988 Electric Fast Transient Burst immunity Criteria A Declaration of Conformity based on tests conducted by Chomerics ...

Page 27: ...Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdaq com www mccdaq com ...

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