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CyberResearch UMDAS 0802DA manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    Data Acquisition USER’S MANUAL VER. 1.1 • January 2006 No part of this manual may be reproduced without permission UMDAS 0802DA USB Data Acquisition Module - 8 Channels of 48kHz 13-bit A/D, 16 DIO, with 2 channels of 12-bit D /A ® CyberResearch ® , Inc. www.cyberresearch.com 25 Business Park Dr., Branford, CT 06405 USA 203-483-8815 (9am to 5p[...]

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    CyberResearch ® Data Acquisition UMDAS 0802DA CyberResearch, Inc . iii 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m ©Copyright 2006 All Rights Reserved. January, 1 2006 The information in this document is su bject to change without prior notice in order to improve reliability, desi gn, and fu[...]

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    UMDAS 0802DA CyberResearch ® Data Acquisition iv ©Copyright 2006 Cy berResearch , Inc. Intentionally Blank[...]

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    Table of Contents Preface About this U ser's Gu ide ........................................................................................................ ..............vi What you will learn from this user's guide ..................................................................................... ...................vi Conventions in [...]

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    U MDAS 0802DA User's Guide Non-volatile memory ............................................................................................................ .......................... 4-5 Microcontr oller ................................................................................................................ ............................[...]

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    Preface About this User's Guide What you will learn from this user's guide This user's guide explai ns how to install, co nfigure, an d use the UMDAS 0802DA , a nd also refers you to rel ated document s available on our web si te, and t o technical su pport reso urces. Conventions in this user's guide For more information on …[...]

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    Chapter 1 Introducing the UMDAS 0802DA This user's guide con tains all of the information you need to connect the UMDAS 0802DA to your computer and to the signals you want to measure. The UMDAS 0802DA is par t of the CyberResearch ™ brand of USB- based data acquisit ion product s. The UMDAS 0802DA is a USB 2.0 full-spee d, device that is sup[...]

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    U MDAS 0802DA User's Guide I ntroducing the UMDAS 0802DA U MDAS 0802DA block diagram U MDAS 0802DA functions are i llustrated in the bloc k diagram shown here . Screw te rminal I/O c onnector SPI 8 DIO Even t Co unte r 1 channel (32-bit) USB Microc ontrol ler SYNC 16 USB Ful l-sp eed USB 2.0 Compli ant Inte r fa ce Screw te rmina l I/ O conne [...]

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    Connecting a UMDAS 0802DA to your computer is easy Installing a data acquisition device has never been easier. ! The UMDAS 0802DA relies upon th e Microsoft Human Inte rface Device (HID) class drive rs. The HID class drivers ship with ev ery copy of Windows that is d esigned to work with USB ports. We use the Micro soft HID because it is a standard[...]

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    Chapter 2 Installing the UMDAS 0802DA What comes with your UMDAS 0802DA shipment? As you unpack y our UMDAS 0802DA , verify t hat the follo wing com ponents are included . Hardware ! U MDAS 0802DA ! USB cable (2 meter lengt h) Additional documentation In addition to this hard ware user's guide, you shoul d also receive the Quick Start Guide (a[...]

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    U MDAS 0802DA User's Guide I nstalling the UMDAS 0802DA Unpacking the UMDAS 0802DA As with any el ectronic de vice, yo u should ta ke care whil e handlin g to avoi d damage fr om static electricity. Before removing the UMDAS 0802DA fro m its packaging, ground yourself using a wrist strap or by simply t ouching the computer chassi s or othe r g[...]

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    The last popup bal loon or di alog states "You r new hardwa re is instal led and ready t o use," and t he LED on the U MDAS 0802DA should flash and th en remain lit. This in dicates that communication is estab lished between the U MDAS 0802DA and your computer. On most computers, you can install up to two UMDAS 0802DA un its. If you need [...]

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    Chapter 3 Functional Details Theory of operation - anal og input acquisition modes The UMDAS 0802DA can acqui re analog i nput data i n two diffe rent modes – software paced and co ntinuous scan . Software paced mode In software paced mode, you can acquire one analog sample at a tim e. You initiate the A/D conversion by calling a software command[...]

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    UMDAS 0802DA User's Guid e F unctional Details USB connector The USB connector is on the right sid e of the UMDAS 0802DA . This connector prov ides +5 V power and communicat ion. The vol tage supplie d through t he USB connect or is system -dependent , and m ay be less than 5 V. No external power supply is required. LED The LED on the front of[...]

  • Page 18

    Screw terminal – pins 21-40 The screw terminals on the bottom edge of the (pins 21 to 40) provide the follo wing connections: ! 16 digital I/O connections ( Port A0 to Port A7 , and Port B0 to Port B7 ) ! One power connection ( PC+5 V ) ! Three ground co nnections ( GND ) Main connector and pin out Connector type Screw terminal Wire gauge range 1[...]

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    Pi n 3 AGND Pin 1 CH0 Figure 3-3. Single-end ed measurement connection The following example shows th e single-ended measurem ent data acquired by TracerDAQ. Figure 3-4. Measurement dat a (9 volt ) plotted on TracerDAQ's Strip Chart Single-ended measurements using d ifferential channels To perform a single-ended measurement usi ng diffe rentia[...]

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    In differential mode, the following two requirements must be met for linear operation: ! Any analog input m ust remain in the − 10V to +20V range with respect to ground at all times. ! The maximum differential voltage on an y given analog input pair must remain within the selected voltage range. The input [ common - mode volt age + si gnal ] of t[...]

  • Page 21

    Since the analog inputs are restricted to a − 10 V to +20 V signal swing with respect to ground, all ranges except ±20V can realize a linear output for any differenti al signal wi th zero com mon mode voltage a nd full scal e signal inputs. The ±20 V range is the exception. You canno t put − 20 V on C HHI and 0 V on CHLO since thi s violates [...]

  • Page 22

    +5V +GND Port A0 Figure 3-9. Schematic showing s witch detection by digital channel Port A0 For more information on digital signal connections For more in formati on on digit al signal c onnecti ons and digi tal I/O t echniques, available on the software CD which accompanies your device. Power terminals The PC +5V conn ection (pin 30) draws power f[...]

  • Page 23

    +2.5VREF terminal The +2.5VREF connection (pin 16) is an output terminal that supplies 2.5 volts. The imag es below show the +2.5VREF pin configured as th e voltage source for channel 0. Single-ended measurement Differential measurement SYNC terminal The SYNC connect ion (pin 19) is a bidi rectional I/ O signal. Yo u can use i t for two p urposes: [...]

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    -10V +10V Input Vo lta ge 0 1638 3 Out put C ode 8192 Figure 3-10. Ideal ADC transfer function The offset err or is measured at mi d-scale. Ideally, a zero volt input should pr oduce an out put code of 8192. Any deviation fr om this i s an offse t error. Figure 3-11 Figure 3-11. ADC transfer function with offset error shows an e xample of a UMDAS 0[...]

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    The accuracy pl ots in Figur e 3-12 are dra wn for clarit y and are n ot drawn to scal e. -10 V +10V Input Voltage 0 163 8 3 A ctual Ide al Output Code Gain e rror = + 0.0 2% o r +2 mV Gain err or = -0. 02% , or -2 m V 8192 Figure 3-12. ADC Transfer function with gain error Figure 3-12 shows an example of a UMDAS 0802DA transfer functi on with a ca[...]

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    UMDAS 0802DA channel gain queue feature The UMDAS 0802DA 's channel gain queue f eature allows you to set up a scan sequence with a unique per-c hannel gain setting a nd channel se quence. The channel ga in queue feat ure removes t he restrict ion of usi ng an ascendi ng channel se quence at a fixed gain. This feature creates a channel list wh[...]

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    4. Select Gated from the Ext. Clock Type drop-down list. 5. Set the Universal Library EXTCLOCK option with cbAInScan()/AInScan for the slave UMDAS 0802DA to enable pacing from the master USB device. This Insta Cal option does not affect internally paced ac quisition. It only a ffects scans that use the EXTC LOCK option. An example of a master/ slav[...]

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    Chapter 4 Specifications Typical for 25°C unless other wise specified. Specifications in italic text are guara nteed by design. Analog input Table 4-1. Analog in put spec ifications Parameter Conditions Specification A/D converter type Successive approximation type Input voltage range for linear operation, single-ended mode CHx to GND ±10 volts ([...]

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    U MDAS 0802DA User's Guide S pecifications Maximum throughput scanning to PC mem ory is machine depende nt. The rates specified are for Windows XP o nly. Maxim um rates on ope rating system s that predat e XP may be less and must be determined through testin g on your machine Note 2: Note 3: Note 4: The ADS7871 conv erter only retu rns 13-bits[...]

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    Analog output Table 4-6. Analog output specif ications Parameter Conditions Specification Resolution 12-bits, 1 in 4096 Output range 0 to 4.096 V, 1 mV per LSB. Number of channels 2 Software paced 250 S/s single ch annel typical, PC dependent Single channel, con tinuous scan 10 kS/s Throughput (Note 5) Dual channel, continuous scan, simultaneous up[...]

  • Page 31

    External trigger Table 4-10. Digital trigger specificati ons Parameter Conditions Specification Trigger source (Note 7) External digital TRIG_IN Trigger mode Software selectable Edge sensitive: user configurable for CMOS compatible rising or falling edge. Trigger latenc y 10 µs max Trigger pulse width 1 µs min Input high voltage 4.0 V min, 5.5 V [...]

  • Page 32

    Non-volatile memory Table 4-13. Non-volatile memor y specifications EEPROM 1,024 bytes Address Range Access Description 0x000-0x07F Reserved 128 bytes system data 0x080-0x1FF Read/write 384 bytes cal data EEPROM Configuration 0x200-0x3FF Read/write 512 bytes user area Microcontroller Table 4-14. Microcontro ller specific ations Type High performanc[...]

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    General Table 4-16. General specifications Parameter Conditions Specification Device type USB 2.0 full speed Device compatib ility USB 1.1, USB 2.0 Environmental Table 4-17. Environmental specificati ons Operating temperature range 0 to 70 °C Storage temperature range –40 to 70 °C Humidity 0 to 90% non-condensing Mechanical Table 4-18. Mechanic[...]

  • Page 34

    8-channel single-ended mode Pin Signal Name Pin Signal Name 1 CH0 IN 21 Port A0 2 CH1 IN 22 Port A1 3 AGND 23 Port A2 4 CH2 IN 24 Port A3 5 CH3 IN 25 Port A4 6 AGND 26 Port A5 7 CH4 IN 27 Port A6 8 CH5 IN 28 Port A7 9 AGND 29 GND 10 CH6 IN 30 PC+5V 11 CH7 IN 31 GND 12 AGND 32 Port B0 13 D/A OUT 0 33 Port B1 14 D/A OUT 1 34 Port B2 15 AGND 35 Port B[...]

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    CyberResearch ® Data Acquisition UMDAS 0802DA CyberResearch, Inc . 31 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m Product Service Diagnosis and Debug CyberResearch, Inc. maintains technica l support lines staffed by experienced Applications Engineers and Technicians. There is no charge to cal[...]

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    UMDAS 0802DA CyberResearch ® Data Acquisition 32 ©Copyright 2006 Cy berResearch , Inc. Intentionally Blank[...]

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    CyberResearch ® Data Acquisition UMDAS 0802DA CyberResearch, Inc . 33 25 Business Park Drive P: (203) 483-8815; F: (203) 483-9024 Branford, CT USA www.cyberresearch.co m Warranty Notice CyberResearch, Inc. warrants t hat this equipme nt as furnished will be fr ee from defects in material and workman ship for a period of one year from the conf irme[...]

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    UMDAS 0802DA CyberResearch ® Data Acquisition 34 ©Copyright 2006 Cy berResearch , Inc. Intentionally Blank[...]

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    CyberResearch, Inc. 25 Business Park Drive Branford, CT 06405 USA P: (203) 483-8815; F: (203) 483-9024 www.cyberresearch.com[...]