USB-1208HS-4AO User's Guide
Contents
1. The USB 1208HS 4A0 is shown below All I O connections are made to the screw terminals located along each side of the USB 1208HS 4AO USB 1208HS 4AO User s Guide Introducing the USB 1208HS 4AO USB 1208HS 4A0 functions are illustrated in the block diagram shown here ia FPGA ee 2 5625V Reference eeprom dis 5 125V Reference x8 12 bit dual DA b 5 40V Supply Clock l Data Bus Microcontroller with USB 2 0 high speed D D USB o E FIFO Bus interface 5 DA DAC7553 Vaus 5V DA ENABLEs 33V Always on Trigger A D Clock In A D Clock Out B D A Clock In 16 5V D A Clock Out 1 2V Power ounter In 0 33V supplies Counter In 1 SV Timer Out x16 itwise E DIO ME tondere Protection DIO Figure 1 USB 1208HS 4A0 functional block diagram Software features For information on the features of nstaCal and the other software included with your USB 1208HS 4A0O 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 DA Q Software Quick Start pdf Check www mccdag com download ht m for the latest software version Chapter 2 Installing the USB 1208HS 4AO What comes with your USB 1208HS 4AO shipment As you unpack your USB 1208HS 4AO verify that the following components are included Hardware USB 1208HS 4AO USB cable 2 meter lengt2. sensitive Rising or falling edge High or low level The default setting at power up is edge sensitive rising edge Retrigger The acquisition uses the trigger settings for positive edge negative edge and level sensitive edge sensitive but automatically re arms the trigger after it is activated USB 1208HS 4AO User s Guide Functional Details Power terminals You can use the two 5V connections to supply power to external devices or circuitry These terminals can output up to 285 mA Refer to the pinout diagram on page 12 for the location of this pin Caution The 5V terminals are outputs Do not connect to an external power supply or you may damage the USB 1208HS 4A0 and possibly the computer Analog ground terminals The 10 analog ground AGND connections provide a common ground for all analog I O channels Refer to the pinout diagram on page 12 for the location of the AGND terminal pins Common ground terminals The six ground GND connections provide a common ground for the digital I O timer counter I O timer clock I O and the 5 V terminals Refer to the pinout diagram on page 12 for the location of the GND terminals 18 Chapter 4 Specifications All specifications are subject to change without notice Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Analog input Table 1 Analog input specifications Parameter Conditions Specif
3. 1 1 0 42 5 V 2 2 1 1 1 0 0 10 V 2 6 1 1 1 0 20 USB 1208HS 4AO User s Guide Specifications Analog output Table 5 Analog output specifications Parameter Conditions Specifications D A converter Texas Instruments DAC7553 Number of channels 4 independent Resolution 12 bits Output range Calibrated 10 V Uncalibrated 10 2 V Output transient Host PC is reset powered on suspended or a reset command is issued to device Duration 3 ms typical Amplitude 6 V p p typical D A update rate Software paced 33 to 5000 S s typical system dependent Hardware paced 1 MHz maximum per channel Sample clock source Internal D A clock or AOCKI Monotonicity 12 bits Output current 3 mA maximum per channel Output short circuit Output connect to GND Unlimited duration 10 mA protection typical Output coupling DC Power up and reset state 0V Output noise 0 53 mV rms Settling time to 0 0320 20 V output step RL 5 kQ CL 200 pf 5 uS maximum Absolute accuracy 0 1 Slew rate 6 7 V s typical Offset error drift 10 ppm C typical Gain error drift 65 ppm C typical Digital input output Table 6 Digital I O specifications Digital type CMOS Number of I O 16 Configuration Each bit may be configured as input power on default or output Pull up configuration default setti
4. 2 2 V minimum 5 5 V absolute maximum Input low voltage 1 5 V maximum 0 5 V absolute minimum 0 V recommended minimum Resolution 32 bits Counter read write rates software paced 33 to 8000 reads writes per second typical system dependent High pulse width 25 ns minimum Low pulse width 25 ns minimum Timer Table 10 Timer specifications Timer terminal name TMR Timer type PWM output with count period delay and pulse width registers Output value Default state is idle low with pulses high software selectable output invert Internal clock frequency 40 MHz Register widths 32 bits High pulse width 20 ns minimum Low pulse width 20 ns minimum Output high voltage 4 4 V minimum OH 50 pA 3 76 V minimum IOH 24 mA Output low voltage 0 1 V maximum IOL 50 uA 0 44 V maximum IOL 24 mA Output current 24 mA maximum per pin see Power section for additional information Memory Table 11 Memory specifications Data FIFO 4 kS analog input 4 kS analog output Non volatile memory 32 KB 16 KB firmware storage 16 KB calibration user data 23 USB 1208HS 4AO User s Guide Specifications Power Table 12 Power specifications Parameter Operating modes Conditions Specification Bus powered USB 5 V supply see Note 2 Supply current see N
5. 401120 a sana inan a sa mua kala di ia amaaa ama an a aaa inna 11 Theory of operation analoginputacguisitit nmodes 111 11 Software paced mode eserse cases esed iion iive nae aa ive seli selena dacutecsdacdhcssdaacbade selamla dee Leda do den ele seline 11 Continuous scan mode s eile de rod tpe e o ne be e OR ee CO Ode b bett debe e ee be i id lie eet eed 11 External Components 5 dose eoe eR GI allen ayn lala samimi a lke en ena a Dd 11 USB c nnector etre p Gente p e eo oe RO HR ep o te opea ide tp Taa ere Byk dl gey i 12 Activity LED id Status MED c an maa aa ak a ES sa Dade a D da gama e gah EET aye ap emen a yle B Screw terminals E C 12 Analog input terminals cce so ee Re Bk e EL REPE He ll a eren eletto e be ka 13 Hoiitenitunchtv PC ya dav 13 Analog output terminals noie eid a aos 14 External clock UO terminals tie Stetit Eee e ete sair nant elek le wetness 14 Digital U O terminals ree Hc ee peti oce Er pe lede D Pe el eo AN ebbe eic Vie eet ceases 14 Internal pull up pull down capability eee 15 Counter LO termials see e e pedea ee ee 17 Timer outputterminal ss ne apetece sa allen a an se e yaam sellem ele ya al 8 17 Trigger input terminal one eo Ra n e en o RU Ee la 17 Rett SG OF P ENES 17 Power tetim
6. B 1208HS 4AO FIFO buffer to the memory buffer on your computer The maximum sampling rate is 1 MS s aggregate over one to eight channels You can start a continuous scan with either a software command or with an external hardware trigger event External components The USB 1208HS 4A0 has the following external components as shown in Figure 2 Screw terminal banks two USB connector LEDs p diii 29 56 Pins 1 28 Activity LED connector Figure 2 USB 1208HS 4A0 external components 11 USB 1208HS 4AO User s Guide Functional Details USB connector The USB connector provides 5 V power and communication No external power supply is required Activity LED The Activity LED indicates the communication status of the USB 1208HS 4AO It flashes when data is transferred and is off when the USB 1208HS 4A0 is not communicating This LED uses up to 10 mA of current and cannot be disabled Status LED The Status LED lights up when the USB 1208HS 4A0 is detected and installed on your computer Screw terminals The USB 1208HS 4AO module s screw terminals provide the following connections Eight analog input connections AINO to AIN7 16 digital I O connections D100 to D1015 Four analog output connections AOUTO to AOUT3 10 analog ground connections AGND Six digital ground connections GND One external clock input AICKI and one external clock output AICKO for analog inputs One external cl
7. Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation Windows Microsoft and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation LabVIEW isa trademark of National Instruments CompactFlash is a registered trademark of SanDisk Corporation XBee and XBee PRO are trademarks of MaxStream Inc All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corporation is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corporation neither for its use nor for any infringements of patents or other rights of third parties which may result from 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 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 which a are intended for surgical implant
8. USB 1208HS 4AO USB based High Speed Analog and Digital O Module User s Guide 7 as MEASUREMENT 4 W x Vas COMPUTING USB 1208HS 4AO USB based High Speed Analog and Digital I O Module User s Guide X A a 4 W v Pa MEASUREMENT COMPUTING Document Revision 1 November 2008 Copyright 2008 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Refer to www mccdaq com execteam html for the names titles and contact information of each key executive at Measurement Computing 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 To provide PC based 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 replac
9. ads TRUE 1 If you move the switch to GND DIOO reads FALSE 0 Figure 6 Digital connection DIO detecting the state of a switch a p GND 5V Figure 7 Schematic showing switch detection by digital channel DIOO Internal pull up pull down capability Each of the 16 DIO bits on the USB 1208HS 4A0 has a 47 kO pull up pull down resistor To configure these bits for either a 5 V pull up or a 0 V pull down option you must open the USB 1208HS 4A0 case to access the three pin jumper labeled W34 The pull up pull down voltage is common to all of the internal 47 kQ resistors To open the case and set the W34 jumper do the following 1 Turn over the USB 1208HS 4A0 and rest it on its top on a flat stable surface 2 Peel off the four rubber feet on the bottom of the module to access the screws 3 Remove the four screws shown in Figure 8 from the bottom of the module 15 USB 1208HS 4AO User s Guide Functional Details i a Figure 8 Location of screws connecting bottom and top sections of case 4 Holding both the top and bottom sections of the module tum it back over rest it on the surface and carefully remove the top section of the case 5 Setthe jumper to either pull up or pull down see Figure 9 and Figure 10 09 0660096006005000 090600020000 Figure 9 Location of W34 jumper default pull down setting shown Pull down jumper Pull up jumper configuration configuration default Figur
10. are or losing your data di Angle brackets that enclose numbers separated by a colon signify a range of numbers such as those assigned to registers bit settings etc bold text Bold text is used for the names of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase For example The nstaCal 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 USB 1208HS 4AO MCC s Specifications USB 1208HS 4AO the PDF version of the Specifications chapter in this guide is available on our web site at www mccdaq com pdfs USB 1208HS 4A0 pdf MCC s Quick Start Guide is available on our web site at www mccdaq com PDFmanuals DA Q Software Quick Start pdf MCC s Guide to Signal Connections is available on our web site at www mccdag com signals signals pdf MCC s Universal Library User s Guide is available on our web site at www mccdaq com PDFmanuals sm ul user guide pdf MCC s Universal Library Function Reference is available on our web site at www mccdag com PDFmanuals sm ul functions pdf MCC s Universal Library for LabVIEW User s Guide is a
11. ation 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 1208HS 4A0 doc 3 Table of Contents Preface About this User s Guide 5 yi etme D yalan er yolan dala mi aaa lakin dl yandi 6 Whatyouvwilllearnfromthisuser sguide enne nennen nennen nennen enne 6 Conventionsinthisuser sguide emen 6 Wheretofindmoreinformatlon eee 6 Chapter 1 Introducing the USB 1208HS 4AO 100 eee aaa nn nn innen nn nnne tenni nunt ane nennt nnn nn 7 Softwatreeatules e o E e tee titi eset Mr E M 8 Chapter 2 Installing the USB 1208HS 4AQ nie rrt inttr ye ette ir eet Pe need eed 9 Unpacking the USB z1208HS 4A lee her A wench se e cei elut e OR re vu 9 Installing the softwar eene nieeenicdee ete eet eie la m ee a edenda 10 Installing the hardware ree eee e lime an gadam 10 Connecting the USB 1208HS 4AOtoyoursystem eee 10 CalibratingtheUSB 1208HS 440 eee 10 Chapter 3 Functional Details 01
12. but then turns off the computer has lost communication with the USB 1208HS 4AO To restore communication disconnect the USB cable from the computer and then reconnect it This should restore communication and the LED should light up again Calibrating the USB 1208HS 4AO The USB 1208HS 4A0 is shipped fully calibrated Calibration coefficients are stored in EEPROM Return the device to Measurement Computing Corporation when calibration is required The normal calibration interval is once per year Chapter 3 Functional Details Theory of operation analog input acguisition modes The USB 1208HS 4A0 can acquire analog input data in two basic modes software paced and continuous scan Software paced mode You can acguire one analog sample at a time in software paced mode You initiate the A D conversion by calling a software command The analog value is converted to digital data and returned to the computer You can repeat this procedure until you have the total number of samples that you want The throughput sample rate in software paced mode is system dependent and can range from 33 S s to 4000 S s Continuous scan mode You can acquire data from up to eight channels in continuous scan mode The analog data is continuously acquired converted to digital values and written to an onboard FIFO buffer on the USB 1208HS 4A0 until you stop the scan The FIFO buffer is serviced in blocks as the data is transferred from the US
13. e 10 W34 jumper pull down and pull up configurations 6 Replace the top section of the case and then fasten it to the bottom section with the four screws 16 USB 1208HS 4AO User s Guide Functional Details For more information on digital signal connections For general information regarding digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdag com signals signals pdf Counter I O terminals The terminals provide connections to each 32 bit counter input channel CTRO and CTR1 Each counter can count frequencies of up to 20 MHz Timer output terminal Use the TMR terminal to connect to the pulse width modulation PWM timer output You can set the following timer output parameters through software pulse frequency duty cycle pulse width divided by the pulse period number of pulses to generate time delay before starting the timer output after it s enabled resting state of the output idle high or idle low The timer can generate a pulse output with a programmable frequency range of 0 00931 Hz up to 20 MHz Both the period and time delay ranges are 50 ns to 107 4 seconds 5 V Timer generator TMR terminal Figure 11 USB 1208HS 4AO PWM timer channel Trigger input terminal The TRIG connection is an external digital trigger input The trigger mode is software selectable for Level sensitive or edge
14. e portion of the differential signal to be measured connects to AIN x 1 The analog ground reference wire connects to AGND The terminal configurations for single ended and differential modes are shown in the table below Channel 8 single ended channels configuration 0 4 differential channels configuration Vint Vin Vint Vin 0 AINO AGND AINO AINI 1 AINI AGND AIN2 AIN3 2 AIN2 AGND AIN4 AINS 3 AIN3 AGND AIN6 AIN7 4 AIN4 AGND 5 AINS AGND 6 AIN6 AGND 7 AIN7 AGND In single ended mode the input voltage ranges are 10 V 5 V 2 5 V 0 to 10 V In differential mode the input voltage ranges are 20 V 10 V and 5 V The voltage level on each AINx input is limited to 14 V The following image depicts a voltage source connected to a USB 1208HS 4A0 configured for single ended mode AGND Figure 4 Single ended measurement connection 13 USB 1208HS 4AO User s Guide Functional Details The following image depicts a Wheatstone bridge signal source connected to a USB 1208HS 4A0 configured for differential mode Figure 5 Differential measurement connection For more information on analog signal connections For more information on single ended inputs refer to the Guide to Signal Connections this document is available on our web site at www mccdag com signal
15. ed with same or similar device or refunded at MCC s discretion For specific information please refer to the terms and conditions of sale Harsh Environment Warranty 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 TracerDAQ Universal Library Harsh Environment Warranty Measurement Computing Corporation and the
16. ers maximum USB cable type A B cable UL type AWM 2527 or equivalent minimum 24 AWG VBUS GND minimum 28 AWG D D Environmental Table 14 Environmental specifications Operating temperature range 0 to 50 C Storage temperature range 40 to 85 C Humidity 0 to 90 non condensing 24 USB 1208HS 4AO User s Guide Specifications Mechanical Table 15 Mechanical specifications Dimensions 127 mm L x 88 9 mm W x 35 56 H Main connector and pin out Table 16 Main connector specifications Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Table 17 Main connector pin out Pin Signal name Pin Signal name 1 AINO 29 AOUTO 2 AGND 30 AOUT1 3 AIN1 31 AGND 4 AGND 32 AOUT2 5 AIN2 33 AOUT3 6 AGND 34 AGND 7 AIN3 35 AICKI 8 AGND 36 AICKO 9 AIN4 37 AOCKI 10 AGND 38 AOCKO 11 AIN5 39 TRIG 12 AGND 40 GND 13 AING 41 CTRO 14 AGND 42 CTR1 15 AIN7 43 TMR 16 AGND 44 GND 17 empty 45 empty 18 5V 46 5V 19 GND 47 GND 20 DIOO 48 DIO8 21 DIO1 49 DIO9 22 DIO2 50 DIO10 23 DIO3 51 DIO11 24 DIO4 52 DIO12 25 DIO5 53 DIO13 26 DIO6 54 DIO14 27 DIO7 55 DIO15 28 GND 56 GND 25 Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail
17. h 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 DA Q Software Quick Start pdf This booklet supplies a brief description of the software you received with your USB 1208HS 4A0 and information regarding installation of that software Please read this booklet completely before installing any software or hardware Unpacking the USB 1208HS 4AO As with any electronic device you should take care while handling to avoid damage from static electricity Before removing the USB 1208HS 4A0 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 1208HS 4AO is damaged notify Measurement Computing Corporation immediately by phone fax or email Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact your local distributor Refer to the International Distributors section on our contact web page Wwww mccdag com contact USB 1208HS 4AO User s Guide Installing the USB 1208HS 4AO 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 i
18. ication A D converter Analog Devices AD7329 13 bit successive approximation type Input ranges Software selectable per channel Differential 20 V 10 V 5 V The voltage level on each individual AIN input is limited to 14 V SE 10 V 5 V 2 5V 0 10V Number of channels 4 differential 8 single ended software selectable Input configuration Multiplexed Channel gain queue 8 unique consecutive elements Software configurable range for each channel Absolute maximum input voltage CHx IN to GND 25 V maximum power on 12 V maximum power off Input impedance 35 MQ minimum Input bandwidth 3 db All input ranges 2 MHz typical Input leakage current 250 nA typical 250 kHz input signal Input capacitance 32 pf typical Offset error drift 5 ppm C typical Gain error drift 25 ppm C typical Maximum working voltage 20 V 14 V signal common mode 10 V 411 V 45V 5 5V Sampling rate 1 S s to 1 MS s software programmable Sample clock source Internal A D clock or AICKI Burst mode Software selectable burst rate lus Throughput Software paced 33 to 4000 S s typical system dependent Scan to PC memory 1 MS s maximum Resolution 13 bits A D no missing codes Differential Mode 13 bits uncalibrated Single ended Mode 12 bits CMRR 60hz 74 dB typical Crossta
19. info omccdag com www mccdag com
20. irials 4t ERR ol a nen eR oo ea aea Rie od egets 18 Analog sround terminal 2 2 malik vei Reed et e dte rv rbd ee e E E RR DY 18 Common ground termin ls 5 ee tee eie n e bee Sa a ied eie de 18 Chapter 4 El reuptzupriemeeec K Y SER L teat RENE eee 19 Analog mp t e e Siyam yal ya n n Mak niz iin selam sella in alma a al AR 19 Analog outputs Sezerler li egeli Amine d dedica de le b eite el lek 21 Exi naliirp Sella lp lale Raman ni eicit dte tans tnt eni timeline Gamak A ele id 22 Etemalclockinput output eee 22 USB 1208HS 4AO User s Guide Memory USBispecifications ehe ie ali sets ae ten ated on a tse oe Re la Environmental ER D RS RERO ER yyl iyar Ete Main connector and pin out 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 1208HS 4A0 so that you get the most out of its USB data acguisition features This user s guide also refers you to related documents available on our web site and to technical support resources Conventions in this user s guide For more information on Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardw
21. lk Single ended mode All ranges 62dB typical 250 kHz input signal Differential mode all ranges 78 dB typical 19 USB 1208HS 4AO User s Guide Specifications Table 2 Calibrated absolute accuracy Range Accuracy mV 20 V differential mode 9 55 typical 13 18 maximum 10 V differential mode 4 59 typical 6 23 maximum 5 V differential mode 2 25 typical 2 75 maximum 10 V single ended mode 5 10 typical 8 06 maximum 5 V single ended mode 2 63 typical 4 03 maximum 2 5 V single ended mode 1 59 typical 2 70 maximum 0 10 V single ended mode 3 29 typical 5 13 maximum Table 3 summarizes the noise performance for the USB 1208HS 4AO Noise distribution is determined by gathering 50 kS with inputs tied to ground at the user connector Samples are gathered at the maximum specified sampling rate of 1 MS s Table 3 Noise performance Range Typical counts LSBrms 20 V differential mode 3 0 45 10 V differential mode 3 0 45 5 V differential mode 3 0 45 10 V single ended mode 5 0 91 5 V single ended mode 5 0 91 2 5 V single ended mode gt 0 91 0 10 V single ended mode 5 0 91 Table 4 Input settling time in us typical Condition Range 1LSB 4LSB 8LSB full scale to full scale channel switch same range to same range 10 V 1 5 1 1 1 0 5 V 2 1 1
22. n PDF at www mccdaq com PDFmanuals DA Q Software Quick Start pdf Installing the hardware Be sure you are using the latest system software Before you install your USB 1208HS 4AO run Windows Update to update your operating system with the latest USB drivers Install the MCC DAQ software before you install your board The driver needed to run your board is installed with the MCC DAQ software Therefore you need to install the MCC DAQ software before you install your board Refer to the Quick Start Guide for instructions on installing the software Connecting the USB 1208HS 4A0 to your system To connect the USB 1208HS 4A0 to your system turn your computer on and connect the USB cable to a USB port on your computer or to an external USB hub connected to your computer The USB cable provides power and communication to the USB 1208HS 4AO When you connect the USB 1208HS 4A0 for the first time a Found New Hardware dialog opens when the USB 1208HS 4A0 interface is detected The Status LED on the USB 1208HS 4A0 turns on at this time indicating the USB 1208HS 4A0 is detected and installing on your computer When the dialog closes the installation is complete Caution Do not disconnect any device from the USB bus while the computer is communicating with the USB 1208HS 4A0 or you may lose data and or your ability to communicate with the USB 1208HS 4A0 If the Status LED turns off If the Status LED lights up
23. ng is pull down The port has 47 kQ resistors configurable as pull ups or pull downs via internal jumper Digital I O transfer rate system paced dependent 33 to 8000 port reads writes or single bit reads writes per second typical system Input high voltage 2 0 V minimum 5 5 V absolute maximum Input low voltage 0 8 V maximum 0 5 V absolute minimum 0 V recommended minimum Output high voltage 4 4 V minimum IOH 50 uA 3 76 V minimum IOH 24 mA Output low voltage 0 1 V maximum IOL 50 uA 0 44 V maximum IOL 24 mA Output current 24 mA maximum per terminal see Power section for additional information 21 USB 1208HS 4AO User s Guide Specifications External trigger Table 7 External trigger specifications Parameter Specification Trigger source TRIG input Trigger mode Software configurable for edge or level sensitive rising or falling edge high or low level Power on default is edge sensitive rising edge Trigger latency 1 ps 1 clock cycle maximum Trigger pulse width 100 ns minimum Input type Schmitt Trigger 33 series resistor and 47 k pull down to ground Schmitt trigger 0 4 V to 1 2 V hysteresis Input high voltage 2 2 V minimum 5 5 V absolute maximum Input low voltage 1 5 V maximum 0 5 V absolute minimum 0 V recommended minimum External clock input output Table 8 E
24. ock input AOCKI and one external clock output AOCKO for analog outputs One digital trigger input TRIG Two counter inputs CTRO CTR1 One timer output TMR Two 5 V power output connections 5 V Use 16 AWG to 30 AWG for signal connections The screw terminal signals are shown in Figure 3 AINO 1 AOUTO AGND 2 3 AOUT1 AIN1 3 amp e AGND AGND 4 amp AOUT2 AIN2 5 AOUT3 AGND se AGND AIN3 Me AICKI AGND 8 1 AICKO AN SMS AOCKI AGND 10 9 AOCKO ANS jie TRIG AGND 129 amp GND AlNG M S CTRO AGND 14 98 CTR1 AIN7 se amp TMR AGND 16 9 GND empty 17 empty 5V se 5V GND 19S GND Dio 20 G DIO8 not 24e biog Doo 29 DIO10 Do 23 4 DIO11 Dos MMS DIO12 oos MMS DIO13 nos 2018 DIO14 no 27 DIO15 GND 28 GND Figure 3 USB 1208HS 4A0 screw terminal signals 12 USB 1208HS 4AO User s Guide Functional Details Analog input terminals You can connect up to eight analog input connections to the screw terminals labeled AINO through AINT Input configuration Analog signals are referenced to analog ground AGND Single ended mode requires two wires The wire carrying the signal to be measured connects to AINx The second wire connects to AGND Differential mode requires two wires plus a ground reference The wire carrying the positive portion of the differential signal to be measured connects to AINx The wire carrying the negativ
25. ote 1 Suspend mode lt 2 5mA Enumeration lt 100 mA Run mode lt 500 mA Power consumption excluding Run mode 1 175 W maximum 235 mA input current analog and digital outputs Power available for 5 V AICKO Run mode 1 325 W maximum AOCKO TMR analog outputs The total power consumption for all external loads must be digital I O less than this value and each load must meet the individual specification for the terminal Digital output power calculation Power per output Iout 5 V for example 24 mA P 0 024 5 120 mW output Analog output power calculation Power per output Iout 16 5 V 0 78 for example 3 mA P 0 003 16 5 0 80 63 5 mW output 5 V output power calculation Power W Iout 5 V 5 V output voltage range Run mode 4 5 V minimum 5 25 V maximum Suspend mode enumeration OV 5 V output current Run mode no other output loads 265 mA maximum 1 325 W Fuses On USB supply 0452 750 Littelfuse 0 750A NANO2 Slo Blo Subminiature Surface Mount Fuse Spare fuse mounted in holder on PCB Note 1 This is the total current consumption for the USB 1208HS 4A0 including 5 V digital output and analog output currents Note 2 Output voltage range assumes input power is within specified limits USB specifications Table 13 USB specifications USB device type USB 2 0 high speed USB device compatibility USB 1 1 2 0 USB cable length 5 met
26. s signals pdf Analog output terminals You can connect up to four analog output connections to screw terminals AOUTO to AOUT3 Refer to the pinout diagram on page 12 for the location of these pins Each channel can be software paced at rates up to 5 000 updates per second system dependent or hardware paced at rates up to 1 MS s Each analog output on the USB 1208HS 4A0 has a fixed 10 V output range The outputs default to 0 V at power up External clock I O terminals Use the AICKI and AOCKI terminals to receive a sampling clock from an external source Use the AICKO terminal to output the internal A D sampling clock Use the AOCKO terminal to output the internal D A sampling clock When using an external clock a pulse output generated by the external clock rising edge is also available at these terminals Digital I O terminals You can connect up to 16 digital I O lines to screw terminals DIOO through DIO15 Refer to the pinout diagram on page 12 for the location of these pins The 16 DIO terminals have 47 k resistors that you can configure for pull up pull down using a jumper inside the case The default configuration is pull down 14 USB 1208HS 4AO User s Guide Functional Details You can use the USB 1208HS 4A0 digital I O terminals to detect the state of any TTL level input Refer to the switch circuit shown in Figure 6 and the schematic shown in Figure 7 If you set the switch to the 5 V input DIOO re
27. vailable on our web site at www mecdag com PDFmanuals SM UL LabVIEW pdf USB 1208HS 4AO User s Guide this document is also available on our web site at www mccdaq com PDFmanuals USB 1208HS 4AO pdf Chapter 1 Introducing the USB 1208HS 4AO This user s guide contains all of the information you need to connect the USB 1208HS 4A0 to your computer and to the signals you want to measure The USB 1208HS 4A0 is a USB 2 0 high speed device supported under popular Microsoft Windows operating systems The USB 1208HS 4A0 is compatible with both USB 1 1 and USB 2 0 ports although the speed of the module maybe limited when using USB 1 1 ports With a multiplexed 13 bit A D converter for all analog input channels the USB 1208HS 4A0 can sample upto eight single ended analog inputs upto four differential analog inputs A digital trigger lets you start analog input and or analog output scans The USB 1208HS 4A0 also has 16 digital I O connections The port has 47 KQ resistors that you can configure for pull up pull down using a jumper inside the case The default configuration 1s pull down You can configure each digital bit for either input power on default or output The USB 1208HS 4A0 also includes four 12 bit analog outputs two 32 bit counters that can count TTL pulses and one 32 bit timer The USB 1208HS 4A0 is powered by the 5 volt USB supply from your computer and requires no external power
28. xternal clock I O specifications Parameter Specification Terminal names AICKI AICKO AOCKI AOCKO Terminal types AxCKI Input active on rising edge AxCKO Output power on default is 0 V active on rising edge Terminal descriptions AxCKI Receives sampling clock from external source AxCKO Outputs internal sampling clock D A or A D clock or pulse generated from AxCKI when in external clock mode Input clock rate MHz maximum Clock pulse width AxCKI 400 ns minimum AxCKO 400 ns minimum Input type Schmitt trigger 33 series resistor 47 kO pull down to ground Schmitt trigger 0 4 V to 1 2 V hysteresis Input high voltage 2 2 V minimum 5 5 V absolute maximum Input low voltage 1 5 V maximum 0 5 V absolute minimum 0 V recommended minimum Output high voltage 4 4 V minimum IOH 50 pA 3 76 V minimum IOH 24 mA Output low voltage 0 1 V maximum IOL 50 uA 0 44 V maximum IOL 24 mA Output current 24 mA maximum per terminal see Power section for additional information 22 USB 1208HS 4AO User s Guide Specifications Counters Table 9 Counter specifications Counter terminal names CTRO CTRI Counter type Event counter Number of channels 2 Input type Schmitt trigger 33 series resistor 47 kO pull down to ground Schmitt trigger hysteresis 0 4 V to 1 2 V Input high voltage
Download Pdf Manuals
Related Search