USB-PDISO8/40 User`s Guide
Contents
1. Table 2 2 40 pin connector pin out P14 Signal Name Input 7 terminal A Input 6 terminal A Input 5 terminal A Input 4 terminal A Input 3 terminal A Input 2 terminal A Input 1 terminal A Input O terminal A Relay 7 Common contact Relay 6 Common contact Relay 5 Common contact Relay 4 Normally Closed contact Relay 4 Normally Open contact Relay 3 Common contact Relay 2 Normally Closed contact Relay 2 Normally Open contact Relay 1 Common contact Relay 0 Normally Closed contact Relay 0 Normally Open contact Relay 5 Normally Closed contact Signal Name Input 7 terminal B Input 6 terminal B Input 5 terminal B Input 4 terminal B Input 3 terminal B Input 2 terminal B Input 1 terminal B Input O terminal B Relay 7 Normally Open contact Relay 6 Normally Open contact Relay 5 Normally Open contact Relay 4 Common contact Relay 3 Normally Closed contact Relay 3 Normally Open contact Relay 2 Common contact Relay 1 Normally Closed contact Relay 1 Normally Open contact Relay 0 Common contact Relay 7 Normally Closed contact Relay 6 Normally Closed contact Cabling For signal connections and termination you can use the CIO MINI40 screw terminal board and C40FF x cable The red stripe 2 identifies pin 1 A 40 40 pin Female 40 pin Female IDC Connector IDC Connector Figure 2 1 C40FF x cable 2 4 USB PDISOS 40 User s Guide Installing the USB PDISOS 40 For connections to 37 pin connectors2. to an additional Measurement Computing USB product If you connect the external power supply to the POWER OUT connector the USB PDISO8 40 does not receive power and the PWR LED does not illuminate Connecting the USB PDISO8 40 to your system To connect the USB PDISO8 40 to your system connect the USB cable to a USB port on your computer or to an external USB hub that is connected to your computer The USB cable provides communication to the USB PDISO8 40 When you connect the USB PDISO8 40 for the first time multiple Found New Hardware pop up balloons Windows XP or dialogs other Windows versions appear as the USB PDISO8 40 is detected 4 Found New Hardware x USEB PDISOS 40 Windows has found new hardware and is locating the sottware for tt If you are running Windows XP and connect the USB PDISO8 40 to a USB 1 1 port a balloon displays the message Your USB device can perform faster if you connect to a USB 2 0 port You can ignore this message The USB PDISO8 40 will function properly when connected to a USB 1 1 port although USB bandwidth will be limited When installation is complete the USB LED should flash and then remain lit This indicates that communication is established between the USB PDISO8 40 and your computer If the USB LED turns off If the USB LED is lit but then turns off the computer has lost communication with the USB PDISO8 40 To restore communication disconnect the USB cable from the comp
3. 3 3 USB PDISO8 40 daisy chain connections configuration requiring full power load Relay contact protection circuit for inductive loads When you connect an inductive load to a relay energy stored in the inductive load can induce a large voltage surge when you switch the relay This voltage can severely damage the relay contacts To limit the voltage surge across the inductive load in a DC circuit install a kickback diode across the inductive load Refer to the contact protection circuit in Figure 3 4 For AC loads install a metal oxide varistor MOV Relay Inductive Kickback Load Diode Figure 3 4 Relay contact protection circuit 3 4 Chapter 4 Specifications Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Relay specifications Table 1 Relay Output specifications Number S B OSO 8 FORM C SPDT NO NC and Common available at connector 6 amperes A 240 volts AC VAC or 28 volts DC VDC resistive see connector rating below 100 milliohms mQ max 10 milliseconds ms max 10 milliseconds max 10 to 55 hertz Hz Dual amplitude 1 5 millimeters mm 10 G 11 ms 500 V 1 minute 10 million mechanical operations min Not energized NC in contact to Common Isolated inputs Table 2 Isolated input specifications 500 volts V 1 6k ohms Q min Voltage rang DC ros i Sica Input high 6 0 Vims min 50 1000 Hz Input low 1 5 Vims
4. All I O connections are made to a 40 pin connector The USB PDISO8 40 is powered by an external 9 V 1 A regulated power supply that is shipped with the device The USB PDISO8 40 is shipped in a rugged enclosure that you can mount on a DIN rail or on a bench Software features For information on the features of InstaCal and the other software included with your USB PDISO8 40 refer to the Quick Start Guide that shipped with your device The Quick Start Guide is also available in PDF at www imcecdag com PDFs manuals DAQ Software Quick Start pdf Check www mecdag com download htm for the latest software version or versions of the software supported under less commonly used operating systems 1 1 USB PDISOS 40 User s Guide Introducing the USB PDISO amp 40 USB PDISO8 40 block diagram USB PDISO8 40 functions are illustrated in the block diagram shown here 9V Differential Nominal isolated inputs Control External i Power Registers Power 8 Monitor CL lt lt _ _ Chi Form C lt _ Power relay outputs 4 Relay Regulator lt Driver 40 pin USB 500 mA 8 Controller USB 2 0 compliant I O connector interface Figure 1 1 USB PDISO8 40 functional block diagram Connecting a USB PDISO8 40 to your computer is easy Installing a data acquisition device has never been easier The USB PDISO8 40 relies upon the Mi
5. for the names of manuals and help topic titles and to emphasize a word or phrase Where to find more information Additional information about USB PDISO8 40 hardware is available on our website at www mccdag com You can also contact Measurement Computing Corporation with specific questions Knowledgebase kb mccdag com Tech support form www mccdag com support support_form aspx Email techsupport mccdag com Phone 508 946 5100 and follow the instructions for reaching Tech Support For international customers contact your local distributor Refer to the International Distributors section on our website at www mccdag com International Chapter 1 Introducing the USB PDISO8 40 This user s guide contains all of the information you need to install configure and program the USB PDISO8 40 The USB PDISO8 40 is a USB 1 1 low speed device that is used for data acquisition and control The USB PDISO8 40 is supported under popular Microsoft Windows operating systems and is fully compatible with both USB 1 1 and USB 2 0 ports The USB PDISO8 40 offers eight single pole double throw SPDT Form C relay outputs and eight isolated high voltage digital inputs The inputs monitor 24V AC or DC inputs The relay outputs provide 6 Amp outputs at 240 VAC or 28 VDC You can configure each isolated input with an optional input filter The input filters are enabled and disabled by software The USB PDISO8 40 is shown in Figure 1 1
6. information about Measurement Computing trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies 2006 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 Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without prior written consent from Measurement Computing Corporation Life support devices systems are devices or systems that a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people HM USB PDISO8_40 doc 111 Table of Contents ADOUT thIS USERS GU ana V What you will learn from this user s guide oooccccccnnnccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnss V Conventions I LOIS Users PU aa V Where to TING MOE OMAN ARA v Chapter 1 introducing the
7. max 50 1000 Hz Response Filters 5 ms 200 Hz Software programmable at each input Filters off USB PDISOS 40 User s Guide Specifications Power Table 3 Power specifications Specification USB 5 V input voltage range 4 75 V min to 5 25 V max USB 5 V supply current All modes of operation External power input pe nominal Voltage supervisor limits PWR 6 5 V gt Vex or Vet gt 12 5 V Note 1 LED 6 5 V lt Vox lt 12 5 V PWR LED On External power consumption Note 1 The USB PDISO8 40 monitors the external 9 V power supply voltage with a voltage supervisory circuit If this power supply exceeds its specified limit the PWR LED will turn off indicating a power fault condition External power output Table 4 External power output specifications Specification External power output current range 4 0 A max External power output Voltage drop between power input and daisy 0 5 V max chain power output Compatible cable s for daisy chain C MAPWR x x 2 3 or 6 feet Note 2 The daisy chain power output allows multiple USB Series products with a USB hub output port to be powered from a single external power source in a daisy chain fashion The voltage drop between the module power supply input and the daisy chain output is 0 5 V max Users must plan for this drop to assure the last module in the chain will receive at least 6 5 VDC USB specifications Table 5 USB specifications USB B connector I
8. maximum current at 5 V The USB out connector is labeled USB OUT on the enclosure and on the board For information on daisy chaining to other compatible Measurement Computing USB products refer to Daisy chaining additional modules to the USB PDISO8 40 on page 3 3 USB IN connector Connect the USB IN connector to the USB port on your computer or USB hub connected to your computer The USB in connector is labeled USB IN on the enclosure and on the board 3 1 USB PDISOS 40 User s Guide Functional Details External power connectors The USB PDISO8 40 has two external power connectors labeled POWER IN and POWER OUT on the enclosure The POWER IN connector is labeled PWR IN on the board and the POWER OUT connector is labeled PWR OUT on the board To supply external power connect the POWER IN connector to the supplied 9 V external power supply CB PWR 9 The POWER OUT connector lets you power additional daisy chained Measurement Computing USB products from a single external power supply The C MAPWR x cable is available from MCC to connect additional Measurement Computing USB products USB LED The USB LED indicates the communication status of the USB PDISO8 40 This LED uses up to 5 mA of current and cannot be disabled Table 3 1 explains the function of the USB LED Table 3 1 USB LED illumination USB LED illumination Steady green The USB PDISO8 40 is connected to a computer or external USB hub Blinks con
9. 40 You can daisy chain a maximum of four Measurement Computing USB products to a single USB 2 0 port on your computer or a maximum of two devices to a single USB 1 1 port Use the supplied cable or an equivalent cable for daisy chaining to additional MCC USB Series products To daisy chain two or more USB PDISO8 40 modules follow the steps below This procedure assumes you already have one USB PDISO8 40 connected to a computer and to the external power source The USB PDISO8 40 already connected to the computer is referred to as the connected module The USB PDISO8 40 you want to daisy chain to the connected module is referred to as the new module 1 Connect the Power OUT connector on the connected module to the POWER IN connector on the new module 2 Connect the USB OUT connector on the connected module to the USB IN connector on the new module 3 For each additional module you want to add repeat steps 1 2 with the module you just daisy chained now being the connected module An example of a daisy chain system is shown in Figure 3 2 USB port to USB IN POWER OUT POWER OUT to POWER IN to POWER IN 7 Be USB OUT to a USB OUT to jj Zz USB IN USB IN A CB PWR 9 power supply to POWER IN Figure 3 2 USB PDISO8 40 daisy chain connections configuration not near full power load Power limitations using multiple USB PDISO8 40 devices When daisy chaining additional Measurement Computing USB products to the US
10. B PDISO8 40 you must ensure that you provide adequate power to each module that you connect The USB PDISO8 40 1s powered with a 9 VDC nominal 1 0 A external power supply When connecting multiple modules power supplies with higher current capability are available from MCC such as the CB PWR 9V3A Supply current Running one USB PDISO8 40 with all relays on draws 820 mA from the 1 A supply When using the USB PDISO8 40 under full load conditions you cannot daisy chain additional Measurement Computing USB modules unless you supply external power to each module in the chain If you are not sure how much current your application requires we recommend that you provide separate power to each Measurement Computing USB product that you connect 3 3 USB PDISOS 40 User s Guide Functional Details Voltage drop A drop in voltage occurs with each module connected in a daisy chain system The voltage drop between the module power supply input and the daisy chain output is 0 5 V maximum Factor in this voltage drop when you configure a daisy chain system to ensure that at least 6 5 VDC 1s provided to the last module in the chain A daisy chain system in a full power load configuration is shown in Figure 3 3 USB port to CB PWR USB IN power supply to CB PWR 9 POWER IN power supply to POWER IN 5 ye OUT aA P ar LO USB OUT Dee to USB ING ag to USB IN Ze CBPWR9 7 power supply to ad POWER IN Figure
11. USB PDISO8 40 USB based Isolated Input and Relay Output User s Guide Va YU FA MEASUREMENT AWK Pas COMPUTING USB PDISO8 40 USB based Isolated Input and Relay Output User s Guide Ya A Sa Wi ay MEASUREMENT COMPUTING Document Revision 3 August 2006 Copyright 2006 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our mission e To provide data acquisition hardware and software that will save time and save money Simple installations minimize the time between setting up your system and actually making measurements We offer quick and simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system Limited Lifetime Warranty Most MCC products are covered by a limited lifetime warranty against defects in materials or workmanship for the life of the product to the original purchaser unless otherwise noted Any products found to be defective in material or workmanship will be repaired replaced with same or similar device or refunded at MCC s discretion For specific information please refer to the terms and conditions of sale Harsh Envi
12. USB PDISOS 40 iiu ii 1 1 SOWAS EES AAA S O A 1 1 USB PDISOS 40 bloc daras 1 2 Connecting a USB PDISO8 40 to your computer is easy cccccccccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn nn nn nr nr nn rra 1 2 Chapter 2 Installing the USB PDISOO Aun ie 2 1 What comes with your USB PDISO8 40 shipment ooocccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnininoss 2 1 O eee seat cee erase E E el ene ene ce eee erate eed emeeged 2 1 OGIO Nal COC A ranna shay eee arches e ata 2 2 CEO MAN A II A A A ER 2 2 Unpaciins thes SBP DIS OG A x oasis cae test eens etd a Maat el is 2 2 AMAN Sonare anra mente ee Deterrent enue een ANENE ee Se Sew ee ne CaF ANEAN tei 2 2 Instalime tie USB PDISOS A0 tada 2 2 Connectine the extemal power SUp ply aiii a aaa 2 2 Connecting the USB PDISOS8 40 TO Y OUE Sy Sei sisare een AA A A asics 2 3 Connectine the board dor O Oper anon std 2 4 Connectors cables main lO COnnectOrictss cies a Wie eae o eee 2 4 Pin Out maln MOCOS lila Silane eda calls 2 4 O o ed os o reos sacd tes esa es 2 4 Field wiring and signal termination AcCessSoOTTES ooooocccccccnnnnononoonnonononnnnnccnnnnnnnnnnnnnnnnnnnncnnnnnnnnnnn non nnnnnnnnnnnncnnnnnnnnnnnnnnnnnnos 2 5 Chapter 3 FUNCUONAl Detalls O edad 3 1 Internal components a o ok 3 1 USB OUT CONAM ela lod 3 1 USB IN CONDE circa a o ted ts 3 1 External power Cone O n ae lr core dono ore eno 3 2 USBLED riea enaA da dt ia 3 2 PWR DEDO A coa 3 2 Direct current dc powe
13. crosoft Human Interface Device HID class drivers The HID class drivers ship with every copy of Windows that is designed to work with USB ports We use the Microsoft HID because it is a standard and its performance delivers full control and maximizes data transfer rates for your USB PDISO8 40 No third party device driver is required The USB PDISO8 40 is plug and play There are no jumpers to position DIP switches to set or interrupts to configure You can connect the USB PDISO8 40 before or after you install the software and without powering down your computer first When you connect an HID to your system your computer automatically detects it and configures the necessary software You can connect and power multiple HID peripherals to your system using a USB hub You can connect your system to various devices using a standard four wire cable The USB connector replaces the serial and parallel port connectors with one standardized plug and port combination Data can flow two ways between a computer and peripheral over USB connections Make sure that you have the latest Windows Updates installed for your USB driver particularly XP Hotfix KB822603 1 2 Chapter 2 Installing the USB PDISO8 40 What comes with your USB PDISO8 40 shipment As you unpack your USB PDISO8 40 make sure that the following components are included Hardware USB PDISO8 40 USB cable 2 meter length ss w External power
14. lay 7 Normally Open contact 19 Relay 6 Common contact 20 Relay 6 Normally Open contact 21 Relay 5 Common contact 22 Relay 5 Normally Open contact 23 Relay 4 Normally Closed contact 24 Relay 4 Common contact 25 Relay 4 Normally Open contact 26 Relay 3 Normally Closed contact 27 Relay 3 Common contact 28 Relay 3 Normally Open contact 29 Relay 2 Normally Closed contact 30 Relay 2 Common contact 31 Relay 2 Normally Open contact 32 Relay 1 Normally Closed contact 33 Relay 1 Common contact 34 Relay 1 Normally Open contact 35 Relay 0 Normally Closed contact 36 Relay 0 Common contact 37 Relay 0 Normally Open contact 38 Relay 7 Normally Closed contact 39 Relay 5 Normally Closed contact 40 Relay 6 Normally Closed contact 4 3 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
15. nput PR o y USB cable type upstream and A B cable UL type AWM 2527 or equivalent min 24 AWG VBUS GND min 28 downstream AWG D D USB cable length Mechanical Table 6 Mechanical specifications Card dimensions 304 3 mm L x 121 9 mm W x 17 8 mm H 12 0 L x 4 8 W x 0 7 H BSKS WEP 13 5 L x 4 95 W x 2 32 H USB PDISOS8 40 User s Guide Specifications Environmental Table 7 Environmental specifications Operating temperature range 0 to 70 C Storage temperature range 40 to 85 C 0 to 95 non condensing Main connector and pinout Table 8 Main connector specifications P14 40 pin header Compatible cables C40FF x 40 conductor ribbon cable female both ends x length in feet C40 37F x 40 pin IDC to 37 pin female D connector x length in feet Compatible accessory products CIO MINI40 using the C40FF x cable Compatible accessory products CIO MINI37 using the C40 37F x cable SCB 37 Pin Signal Name Pin Signal Name 1 Input 7 terminal A 2 Input 7 terminal B 3 Input 6 terminal A 4 Input 6 terminal B 5 Input 5 terminal A 6 Input 5 terminal B 7 Input 4 terminal A 8 Input 4 terminal B 9 Input 3 terminal A 10 Input 3 terminal B 11 Input 2 terminal A 12 Input 2 terminal B 13 Input 1 terminal A 14 Input 1 terminal B 15 Input O terminal A 16 Input O terminal B 17 Relay 7 Common contact 18 Re
16. or boards you can use the C40 37F x or C40F 37M x cable The red stripe identifies pin A 40 pin Female 37 pin Female IDC Comnector Dsub Connector Figure 2 2 C40 37F x cable O The red stripe identifies pin A 0000000000000000000 000000000000000000 40 pin Female 37 pin Male IDC Comnector Dsub Connector Figure 2 3 C40 37M x cable Field wiring and signal termination accessories You can connect the USB PDISO8 40 to the following accessory boards using the cables above CIO MINI40 40 pin screw terminal board CIO MINI37 37 pin screw terminal board SCB 37 37 conductor shielded signal connection box 2 5 Chapter 3 Functional Details The USB PDISO8 40 provides SPDT relay control and isolated inputs in a plug and play package All I O connections are made to a 40 pin connector refer to Table 2 2 on page 2 4 for the signal pin out Internal components The USB PDISO8 40 has the following internal components as shown in Figure 3 1 Two 2 USB connectors Two 2 external power connectors USB LED PWR LED 40 pin I O connector USB IN POWER IN USB POWER OUT OUT L 4 PWR LED gt USB LED gt 40 pin connector Figure 3 1 USB PDISO8 40 components USB OUT connector The USB OUT connector is a downstream hub output port intended for use with other Measurement Computing USB products only The USB hub is self powered and can provide 100 mA
17. r connector and 9 V power SUPply ooccccccncnccnnnnnnnnnnnnnnnnononnnnnnnnnnnnnnnnnnnnnnnoss 3 2 Daisy chaining additional modules to the USB PDISO8 40 occcccccnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnonnnononinininess 3 3 Power limitations using multiple USB PDISO8 40 deviceS ooccccccccccncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnninininnss 3 3 O 3 3 VOMASE TOP e la ola le la ll rollo el he Ml 3 4 Relay contact protection circuit for Inductive LOS sisas 3 4 Chapter 4 SpeciticatlonS nina E 4 1 ELA PECIA AUS AAA A AS A 4 1 ea A A o A A A A wes awatasen se 4 1 A EAEAN A A 4 2 USB SPC CUI AU ons oaar a ET aci 4 2 ME a I EEEE E A EE E E E AET E E E E EE E codas 4 2 Environmental cl Aasseneee 4 3 MAA connector e eee 4 3 A on A O E 4 3 Preface About this User s Guide What you will learn from this user s guide This user s guide explains how to install configure and use the USB PDISO8 40 so that you get the most out of its USB based isolated input relay output features Conventions in this user s guide For more information Text presented in a box signifies additional information related to the subject matter Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardware or losing your data bold text Bold text is used for the names of objects on a screen such as buttons text boxes and check boxes italic text Italic text is used
18. ronment Program Any Measurement Computing product that is damaged due to misuse or any reason may be eligible for replacement with the same or similar device for 50 of the current list price I O boards face some harsh environments some harsher than the boards are designed to withstand Contact MCC to determine your product s eligibility for this program 30 Day Money Back Guarantee Any Measurement Computing Corporation product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep 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 the use of its products even if Measurement Computing Corporation has been notified in advance of the possibility of such damages Trademark and Copyright Information Measurement Computing Corporation InstaCal Universal Library and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation Refer to the Copyrights amp Trademarks section on mecdaq com legal for more
19. supply and cord CB PWR 9 9 volt 1 amp DC power supply USB PDISO8 40 User s Guide Installing the USB PDISO8 40 Additional documentation In addition to this hardware user s guide you should also receive the Quick Start Guide available in PDF at www mecdag com PDFs manuals DAQ Software Quick Start pdf This booklet supplies a brief description of the software you received with your USB PDISO8 40 and information regarding installation of that software Please read this booklet completely before installing any software or hardware AO C40 37F x C40F 37M 2 C40FF x Optional components Cables Unpacking the USB PDISO8 40 As with any electronic device you should take care while handling to avoid damage from static electricity Before removing the USB PDISO8 40 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 any components are missing or damaged notify Measurement Computing Corporation immediately by phone fax or e mail Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport ymccdag com Installing the software Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data Acquisition Software CD This booklet is available in PDF at www mccdag com PDFs man
20. tinuously Initial communication is established between the USB PDISO8 40 and the computer or data 1s being transferred PWR LED The USB PDISO8 40 incorporates an on board voltage supervisory circuit that monitors the external 9 V power supply If the input voltage falls outside of the specified ranges the PWR LED shuts off see Table 3 2 Table 3 2 PWR LED illumination PWR LED illumination Steady green 9 V external power is supplied to the USB PDISO8 40 Off Input power is not supplied or a power fault has occurred A power fault occurs when the input power falls outside of the specified voltage range External power 9 V 6 5 V to 12 5 V Direct current dc power connector and 9 V power supply The USB PDISO8 40 requires between 6 5 V and 12 5 V of external power An external power connection is required to activate the relays and to run tests in InstaCal The USB specification allows high power devices to draw up to 500 mA When all eight relays are energized the collective current draw exceeds the maximum allowed for high power USB devices Therefore external power is required Use the 9 volt V DC power supply cord shipped with the USB PDISO8 40 to provide external power to this connector 3 2 USB PDISOS 40 User s Guide Functional Details Daisy chaining additional modules to the USB PDISO8 40 Daisy chained MCC USB Series products connect to the USB bus through the high speed hub on the USB PDISO8
21. uals DAQ Software Quick Start pdf Installing the USB PDISO8 40 Before you connect the USB PDISO8 40 to your computer connect the external power supply that was shipped with the device Y ou can connect up to four compatible Measurement Computing USB products in a daisy chain configuration to a single USB 1 1 port or USB 2 0 port on your computer Connecting the external power supply Power to the USB PDISO8 40 is provided with the 9 V external power supply CB PWR 9 You must connect the external power supply before connecting the USB cable to the USB PDISO8 40 and your computer If you are connecting more than one Measurement Computing USB product make sure that you provide adequate power to each device Refer to the Power limitations using multiple USB PDISO8 40 devices section on page 3 3 2 2 USB PDISOS 40 User s Guide Installing the USB PDISOS 40 To connect the power supply to your USB PDISO8 40 connect the external power cord to the power connector labeled POWER IN on the USB PDISO8 40 enclosure PWR IN on the board Refer to Figure 3 1 on page 3 1 for the location of this connector The PWR LED illuminates green when 9 V power is supplied to the USB PDISO8 40 If the voltage supply is less than 6 5 V or more than 12 5 V the PWR LED does not light Do not connect external power to the POWER OUT connector The power connector labeled POWER OUT on the enclosure PWR OUT on the board is used to provide power
22. uter 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 PDISO8 40 or you may lose data and or your ability to communicate with the USB PDISO8 40 If your system does not detect the USB PDISO8 40 If a USB device not recognized message appears when you connect the USB PDISO8 40 do the following 1 Unplug the USB cable from the USB PDISO8 40 2 Unplug the external power cord from the POWER IN connector on the enclosure 3 Plug the external power cord back into the POWER IN connector 4 Plug the USB cable back into the USB PDISO8 40 Your system should now properly detect the USB PDISO8 40 hardware Contact technical support if your system still does not detect the USB PDISO8 40 2 3 USB PDISOS 40 User s Guide Installing the USB PDISOS 40 Connecting the board for I O operations Connectors cables main I O connector Table 2 1 lists the board connectors applicable cables and compatible accessory boards Table 2 1 Board connectors cables accessory equipment Pd Api ion coed Compatible cables C40FF x 40 conductor ribbon cable female both ends x length in feet C40 37F x 40 pin IDC to 37 pin female D connector x length in feet Compatible accessory products CIO MINI40 AA fo Compatible accessory products CIO MINI37 Pin out main I O connector
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