ITC-18 Users manual
Contents
1. Figure 1 Explanation of symbols 12 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 2 Controls and Functions 2 1 Front Panel Controls Circled numbers reference to the diagram of the front panel i gt DAG OUTPUT ADC INPUT o amp gt READY T 1 T T T T T T 1 Y gt Oo 0 1 2 3 0 1 2 3 4 5 6 7 SIGNAL GROUND POWER 0 e SA A A A A A A A Pie O 110 18 comput R INTERFACE ISTRUTECH kororalion Great Neck N Y ude DD o o Figure 2 ITC 18 Front Panel Controls O READY indicator The ready indicator will be illuminated when the ITC 18 has been properly initialized by the host computer and the acquisition software If this indicator is not illuminated then the ITC 18 cannot function properly POWER indicator The power indicator will be illuminated when the ITC 18 has been powered on The 7C 18 uses circuitry that will automatically switch the internal power supply when the computer is started or shutdown DAC outputs Four BNC connectors provide access to the four individual deglitched 16 bit digital to analog converter outputs All DAC outputs are thermally stabilized to reduce drift The digital to analog converter output voltages and timings are controlled by the acquisition software The DAC channels have an output range of 10 24 to 10 23 volts These channels are optically isolated from the computer 13 I2. S MANUAL 5 Troubleshootin Most problems arise from incorrect installation of the hardware and or incorrect use of the software The first thing to check is for proper installation of the hardware interface card Instrutech Corporation has utilities available for testing the PCI 18 card under MacOS and DOS This utility is available from Instrutech by Internet WWW or FTP For access to our WWW site our URL is http www instrutech com For access by anonymous FTP use the URL ftp ftp instrutech com If you do not have access to the Internet call Instrutech and request the PCI utility disk Check the cable connecting the PCI 18 card to the ITC 18 interface Make sure both ends are plugged in securely and that the cable is not damaged Check to see that the AC line cord is plugged in correctly Check the fuses on the ITC 18 interface rear panel If all of the above steps fail to resolve the problem then contact your dealer for assistance 21 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 6 Additional Software 6 1 Available Driver Software Instrutech Corporation has available driver software for researchers and developers who wish to write custom applications using the ITC 18 Interface These drivers and appropriate manuals are available in both MacOS and Windows formats They are available from Instrutech Corporation by request They are also available from Instrutech Corporation by Internet WWW FTP or email For acce
3. 18 can access the A D D A and digital I O channels in any sequence This provides the ability of different sampling rates for each channel FIFO Memory The ITC 18 is supplied with a large 1024 kilosample dynamically allocatable FIFO memory for input and output data The ITC 18 allows data acquisition to be performed independent of the activity of the host computer A large FIFO memory allows for increased acquisition speed while minimizing the use of computer resources The ITC 18 costs more than low cost data acquisition devices which are built as printed circuit boards mounted in a computer without electrical isolation and multiplexing a single A D converter For this extra cost it provides a major improvement in the quality of acquired data making measurements possible that would not otherwise be feasible 11 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 1 7 Explanation of symbols Symbol Description N Alternating current Currant alternatif Wechselstrom Corriente alterna Corrente variabile On Supply Allum alimentation An Netz Encendido suministro Sotto tensione Off Supply teint alimentation Aus Netz Apagado suministro Fuori tensione Caution Attention Vorsicht Cuidado Cautela DPHE Protective conductor terminal Borne du conducteur de protection Schutzleiterpol Terminal de conductor protector Morsetto di filo di protezione
4. ITC 18 PCI USER S MANUAL 1 4 Purchase Information Take the time now while getting started to record some purchase information here This will make it easier to locate this information should this become necessary in the future Date of purchases uansett Dealer is Dealer telephone number ITC 18 Serial number PCI 18 Serial number Other notes INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 1 5 Technical Specifications Unless otherwise noted ambient temperature 25 degrees Celsius Analog Input Channels Channels 8 Input Range 10 24 volts to 10 23 volts Gain High speed programmable gain 1 2 5 or 10X instrumentation amplifier Settling time 3 microseconds 0 01 all gains Input Type True Differential Conversion Speed Programmable 5 us 200 kHz to 82 ms 12 Hz in 1 25 us steps Resolution 16 bit 1 in 3200 Input impedance I Meg ohm Input connector BNC Absolute maximum input 40 volts peak Analog Output Channels Channels 4 with built in thermal stabilization Output Range 10 24 volts to 10 23 volts Output Type Pseudo differential Conversion Speed Programmable from 5 us 200 kHz to 82 ms 12 Hz in 1 25 us steps Resolution True 16 bit Settling Time Less than 4 us to 0 001 Current drive capability
5. The optical isolation is provided to eliminate computer electrical noise from the analog measurements Computers contain digital electronics that switch at high speed producing large electrical transients The computer ground functions as the return path for these transients resulting in substantial high frequency ground noise The ITC 18 has a completely separate analog ground that is isolated from the computer ground Computer ground noise is not coupled into the measurement Optical isolation is almost essential if low noise analog outputs are provided If the analog outputs are not electrically isolated from the computer ground the analog output ground will contain computer generated noise This is one of the major ways by which computer generated noise is introduced into a measurement system The optical isolation of the ITC 18 brings with it another benefit that simplifies complex measurement systems Since the analog inputs and outputs of the ITC 18 float with respect to ground the ITC 18 and computer are not a source of ground loop problems Analog Circuitry The ITC 18 provides eight 18 bit A D converters that feature individually programmable input range of 1 2 5 or 10 volts Using separate A D converters for each analog input channel eliminates crosstalk between channels and improves the frequency response of the analog inputs 10 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL Typical data acquisition devices
6. by the acquisition software These digital input channels accept standard TTL levels 5 volts and 0 volts These channels are optically isolated from the computer The absolute maximum voltage range for these inputs is 0 5 volts to 5 5 volts Do not exceed this range or damage can result to the input circuitry O TTL digital outputs Four BNC connectors provide access to four out of the sixteen digital output channels The status of the digital output channels are controlled by the acquisition software These digital channels output standard TTL levels 5 volts and 0 volts These channels are optically isolated from the computer These channels are optically isolated from the computer These channels are optimized to drive 75 ohm BNC cables into an AC HC ACT HCT or 8 TTL load 14 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL TRIG IN A BNC connector provides access to the external trigger input A TTL trigger pulse can be given to start data acquisition The 7C 8 will be triggered with a positive logic pulse with a minimum duration of 150ns This input is not isolated The absolute maximum voltage range for this input is 0 5 volts to 5 5 volts Do not exceed this range or damage can result to the input circuitry TRIG OUT A BNC connector provides access to the sequencer out data bit 0 This sequence bit will switch with each timer period and does not use a time slot Can be used as a gate output signal for trigger
7. of its authorized agents If this upgrade is performed improperly the PCI 18 card will malfunction and become unusable First you must acquire the proper upgrade software from Instrutech Corporation or one of its representatives These upgrades will be announced on the Instrutech mailing list See previous section of this manual and on our Web site The cover of the computer must be removed to access the PCI 18 card in order to install a jumper A programming jumper needs to be installed across the pins labeled WE Install this shunt with the computer powered off After this shunt is installed power on the computer and run the software for your system Update software will be made available in MacOS and DOS formats The DOS program will run under Windows 3 1 and Windows 95 Windows NT users will need to boot their computer in DOS mode to perform this upgrade After the software is run is should give you a successful completion message The computer should then be powered down and the jumper removed from the WE pins Close the computer and turn the power back on The update has now been completed If there is any difficulty in this process please contact your dealer 23 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 8 Product Registration 8 1 Why Register your purchase Instrutech Corporation periodically offers enhancements and updates to our products Without product registration users of our products may miss out on
8. rear panel of the 7C 18 interface Figure 7 ITC 18 Current Driver Out connector pins Assignment Pin Assignment 9g Ground 2 2 24 7 10 3 11 12 out channel 2 bank 1 25 out channel 1 bank 1 3 out channel 0 bank 1 E 1 26 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 9 4 Digital I O and Sequence Out Connector Below is a listing of the pin assignments of the Digital I O and Sequence Out port on the rear panel of the ITC 18 interface Pin 49 Pin 1 y y N Pin 50 Pin2 Figure 8 ITC 18 Digital I O and Sequencer Out connector pins Pin Top amp Bottom Connector 2 Grom 2 assi SEN TTL input bit 15 TTL input bit 7 Ground no connection 2 2 2 2 3 5 7 9 43 BIQIQIQIQIQ ND 2T INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 9 5 Auxiliary Output Connector Pin 33 Pin 1 NY Vv K A Pin 34 Pin 2 Figure 9 ITC 18 Auxiliary output connector pins om Grow om J Grow mm 2 2 2 2 13 15 17 19 1 3 5 7 9 31 33 28 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 10 Warranty Information 10 1 Limited Warranty Instrutech Corporation warrants to the first purchaser for a period of two years from the date of purchase that this Instrutech Instrument hereafter referred to as the Product will be free from defective workmanship and materials and agrees that it will at its opti
9. the inside of the computer case For these computers loosen the two screws on the PCI 18 card that hold the rear bracket in place Adjust the bracket for a better fit and re tighten the screws 4 Re install the cover of the computer di ES Install the ITC 18 interface into the operating position Make sure that the interface can reach the computer with the supplied cable Do not extend this cable Unreliable operation can result if this cable is extended Install the cable between the TC 18 interface and the PCI 18 computer board The connectors on either end of the cable are keyed and will only mate when properly inserted Fix the connectors in place with the screws attached to the connector This is important to ensure a good electrical contact Connect the power cord to the ITC 18 The internal power supply used in the ITC 18 is an auto switching multi voltage supply that will operate from 100 volts to 260 volts Make sure that the ITC 18 power cord is plugged into a properly grounded AC receptacle Improper grounding of the ITC 18 could result in an electrical shock hazard It is advisable to plug all equipment into a common outlet strip this will minimize power line induced noise in the system Equipment plugged into different outlets can cause excessive sixty hertz noise to be induced into the acquired data 18 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 8 Before powering up please recheck all connections If all
10. tii dt nineteen 24 9 Rear Panel Connector PIN Assisnments salina 25 9 1 VR 10 100 Digital Data Recorder Connector 25 9 2 Seral O Connectof saga 26 9 3 Current Driver Out Connector vesener 26 9 4 Digital I O and Sequence Out Connector ccceccsseccssccesscssntsssstcsssncssctesacesnecenes 27 95 Auxiliary Outout Connector ispirare les Ale alate 28 LOS Warranty Information ln ias 29 LOL Limited Warranty ae 29 10 2 Obtaining Warranty Servi siii ilatina 29 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU FIGU RE 1 RE 2 RE 3 RE 4 RE 5 RE 6 RE 7 RE 8 RE9 Table of Figures EXPLANATION OF SYMBOLS ila a 12 ITC 18 FRONT PANEL CONTROLS Li 13 ITC 18 REAR PANEL CONTROLS ii 15 ITC 18 CURRENT DRIVER OUT EXTERNAL CONNECTIONS nooo 16 ITC 18 VR 10 VR 100 CONNECTOR PINS i 25 ITC 18 SERIAL PORT CONNECTOR PINS c i 26 ITC 18 CURRENT DRIVER OUT CONNECTOR PINS iii 26 ITC 18 DIGITAL I O AND SEQUENCER OUT CONNECTOR PINS nono 27 ITC 18 AUXILIARY OUTPUT CONNECTOR PINS iii 28 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL Credits Instrutech Corporation would like to thank the followi
11. 20 milliamperes typical Output impedance 200 ohm Output connector BNC Digital VO Channels TTL Inputs Sixteen CMOS compatible input lines with programmable sense level HIGH or LOW Two modes of operation latched or level sensing The latched mode will hold the value until read by the software Level sensing will change with all level transitions Either mode requires an input signal with a minimum duration of 150 nanoseconds Four inputs are available through BNC connectors on the front panel All inputs are available through a rear panel multi pin connector The absolute maximum voltage range for these inputs is 0 5 volts to 5 5 volts Do not exceed this range or damage can result to the input circuitry TTL Outputs Two banks channels with sixteen CMOS compatible output lines each Will drive AC HC ACT HCT or a maximum of eight TTL loads Four outputs from channel 1 are available through BNC connectors on the front panel All outputs are available through a rear panel multi pin connector and internal connectors Driven Outputs Fourteen current outputs parallel with channel 1 output lines divided into two user banks Each bank of 7 outputs can sink 350 milliamperes maximum depending on number of outputs in use An external power source is required Available on a female DB 25 connector on rear panel INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL Trigger In Start acquisition from an external unisolated CMOS compatibl
12. CORPORATION ITC 18 PCI USER S MANUAL AUX OUTPUTS 34 pin IDC connector 16 auxiliary output lines with individual grounds These signals are not isolated and must use the non isolated ground provided on this connector for proper operation 17 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 3 Installation 3 1 Hardware installation Turn the computer OFF Disconnect the power cord to the computer Remove the cover from the computer to access the computers PCI expansion slots Please follow the instructions outlined in your computer user s manual for removing the cover of the computer Locate an empty PCI bus slot and remove the cover over the case access opening Use caution here to guard against static as outlined in chapter one Remove the PCI 18 card from the static shielding packaging Line up the card edge connector on the PCI 18 board with the female connector on the CPU board Gently press the two together until fully seated If any resistance is felt please check for any proper alignment of the connectors Do not force the two boards together It should take minimal pressure to mate the two connectors If excessive force is used here damage could result to the PCI 18 card and the computer main board If your model computer uses a screw to secure the expansion cards in place install the screw and make sure that it is fastened securely Note On some model computers the rear bracket may not line up correctly against
13. NSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL O ADC inputs Fight BNC connectors provide access to the eight individual 16 bit analog to digital converter input channels Each A D channel uses a high speed programmable gain instrumentation amplifier to provide individually selectable gain Analog to digital converter channel selection and sampling interval timing is controlled by the acquisition software The ADC channels have an input range of 10 24 to 10 23 volts These channels are optically isolated from the computer These channels are differential inputs If the BNC connector shield is left unconnected unexpected results can occur Use only high quality 75 ohm BNC cables for optimal results The absolute maximum input range for these inputs is 40 volts Do not exceed this level or damage can result to the input circuitry SIGNAL GROUND connector A 3 mm banana receptacle provides connection to the internal analog ground This low noise ground is provided for connecting to the recording amplifier This ground connection is not connected to the 7C 8 case or to the computer power supply ground If desired the user should provide an external connection between the case and the instrument rack The mating plug for this connector is a Keystone Electronics Corporation part number 6077 O TTL digital inputs Four BNC connectors provide access to four out of the sixteen digital input channels The digital input channels are controlled
14. USER S MANUAL Model ITC 18 PCI DATA ACQUISITION INTERFACE a DAC OUTPUT ADC NPY Y H 1 1 2 3 0000 00000000 OD 10 18 COMPUTER INTERFACE INSTRUTECH Corporation Great Neck N InstruTECH Precision Instrumentation for Biological Research 20 Vanderventer Avenue Suite 101E Port Washington New York 11050 3752 U S A Tel 516 883 1300 Fax 516 883 1558 Internet sales instrutech com support instrutech com http www instrutech com Rev 8 2 4 2004 9 42 AM INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL Table of Contents EOLO RR FO O 2 ETEN 3 CIS Sota Ar aS eco lei ad assioni cei iaia aa 4 TEIGEN 5 1 1 Product mtend d Usage assessor ian alata 5 LL Accessoirer a 5 1 3 OPA iii 5 L 4 Piitehase Infommationi calice ai 150 Techical Se GST 8 16 Descnpiditare nella ele Alani 9 A A 12 2Controls andFuncionsaillo illa illa ella ila 13 21 Front Panel Control astros 13 2 2 RearPanel Contiols a coetanei 15 gt Installato Leucio 18 dl Hardware installation slice elia iran 18 4 Important COn id path Melilli 20 FT MR 20 4 2 Differential analog to digital ap aironi 20 5 Tre NN 21 6 Additional SOM io end 22 Ol Available Driver Sonate a aiar 22 6 2 Igor A NN 22 7 Product Upgrades varsam sadelen 23 TE PELIS adaptability AAA A a a E tba eae aeNes 23 S PEO UCR AA e o dea eds 24 8 1 Why Register your purchase Vassreset 24 8 2 How to Register your porchas ii a 24 8 3 Product announcement mailing
15. announcements of important enhancements to the products that they are using Instrutech Corporation does not make our customer list available to anyone else Any information that you provide to us is strictly confidential 8 2 How to Register your purchase Product registration can be accomplished in two ways You may fill out and mail in the product registration warranty card supplied with each Instrutech Corporation product You may also register on line at our World Wide Web site at http www instrutech com 8 3 Product announcement mailing list Instrutech Corporation has an Internet emailing list which we use as our primary outlet for announcements of new products product enhancements and product updates We strongly recommend that all users of our products sign up for this emailing list Email is kept to a minimum and list membership is kept in the strictest confidence Only Instrutech Corporation can send mail to members of our emailing list You may join this mailing list through our World Wide Web site at http www instrutech com To do this select Instrutech email lists from the main menu You may also sign up for this list by sending email to listserv instrutech com In the body of this message place the line JOIN instrutech list pour email address your name If this subscribe message is sent from the account where you wish to receive your email the your_email address and your_name parameters are optional This information will
16. be extracted directly from the message 24 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 9 Rear Panel Connector PIN Assignments 9 1 VR 10 100 Digital Data Recorder Connector Below is a listing of the pin assignments of the optional VR 10 VR 100 port on the rear panel of the ITC 18 interface configuration ITC 18 units 15 17 19 21 23 25 27 29 33 35 37 39 Pin 39 y a aN Pin 40 This port is optional and is not provided on standard Pin 1 Vv T Pin 2 Figure 5 ITC 18 VR 10 VR 100 connector pins Assignment PPMCMO0 channel mode PPMCM2 channel mode no connection no connection no connection no connection RSPCO RS 232 RxD Ground PPMPLY Play Rec mode no connection Ground PPMDI data bit 1 PPMD3 data bit 3 PPMDS data bit 5 PPMD data bit 7 PPMD9 data bit 9 PPMDI data bit 11 PPMD13 data bit 13 PPMSTR valid data flag Ground Assignment Pin ME 8 Do not ground these connections they are used by the VR 10 100 25 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 9 2 Serial I O Connector Below is a listing of the pin assignments of the male serial port connector on the rear panel of the 7C 18 interface o e 0 Figure 6 ITC 18 Serial Port connector pins RxD receive data Ground 7 9 3 Current Driver Out Connector Below is a listing of the pin assignments of the Current Driver Out connector on the
17. connections are proper then the power led will illuminate once the computer is started 9 You are now ready to power up the system and install the software Follow the installation instructions provided with the acquisition software that will be used with this ITC 18 PCI interface 19 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 4 Important considerations 4 1 Warm up The ITC 18 digital to analog converter circuitry uses a sophisticated thermal stabilization technique to provide complete stability of the DAC outputs over time For optimal stability of the DAC outputs the ITC 18 requires 20 to 30 minutes of warm up time During this initial 20 minutes after the ITC 18 is turned on DAC drift will occur This drift can be as large as 6 mV during the initial warm up period After this warm up period the DAC outputs will be extremely stable 4 2 Differential analog to digital inputs The ITC 18 analog to digital converter inputs are true differential inputs For proper operation of the A D converter the cable connecting the A D input to the signal source must have a complete shield High quality 75 ohm BNC to BNC cables are recommended for optimum performance A connection should be made between the SIGNAL GROUND connector on the ITC 18 front panel to the signal ground connector on the signal source Most patch clamp amplifiers provide a suitable connection point for the signal ground 20 INSTRUTECH CORPORATION ITC 18 PCI USER
18. e 1 PCI 18 PCI Bus computer plug in card 1 Cable assembly 1 ITC 18 Warranty card 1 PCI 18 Warranty card 1 User s manual If any of these items are missing please contact Instrutech Corporation immediately 1 3 Unpacking After unpacking the ITC 18 and accessories from the shipping carton please inspect each piece for any signs of shipping damage Please contact the delivering carrier and Instrutech Corporation immediately if there is any damage Do not dispose of the shipping carton The carrier will want to examine the shipping carton to process a damage claim Instrutech Corporation insures all shipments to cover shipping damage It is also advisable to keep the shipping carton in the event that the instrument must be returned for service INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL Use caution when removing the PCI 18 computer plug in card from the special static shielding bag that it is packed in This board is susceptible to damage and degradation by static discharges Do not remove the board from this static protection until you are ready to install it into the computer Touch the computer chassis to equalize the static charge between yourself and the computer chassis before handling the computer board Following these steps is extremely important to prevent damage to the computer interface card Instrutech Corporation does not warranty the PCI 18 computer card from damage caused by improper handling INSTRUTECH CORPORATION
19. e source Available through a BNC connector on the front panel The absolute maximum voltage range for this input is 0 5 volts to 5 5 volts Do not exceed this range or damage can result to the input circuitry Trigger Out Unisolated programmable trigger output Available through a BNC connector on the front panel Sequencer Out Seven isolated programmable CMOS compatible trigger outputs The sequencer outputs are very precise triggers that can be programmed to toggle when a particular entry in the sequence RAM is executed Available through a multi pin connector on rear panel PCI 18 Host interface The PCI 18 PCI interface card is a 5 volt slave PCI host card that interfaces the ITC 18 rack unit to the host computer The PCI 18 card is compatible with version 2 0 of the PCI bus specification FIFO memory Standard 1024 kilosample FIFO External Clock Optional 12 8 megahertz external clock will synchronize multiple ITC 18 interfaces Dimensions W 19 H 1 75 D 10 5 Weight 8 pounds W 47 5 cm H 4 375 cm D 26 25 cm Weight 3 6 kg Power requirements 85 264V AC 47 440 Hz 15 Watts Warranty Two years parts and labor All technical specifications are nominal conditions and are subject to change without notice 1 6 Description The ITC 18 is the second generation computer interface from Instrutech Corporation The ITC 18 offers increased capability while retaining all of the exceptional fea
20. gital Output Note The current sink grounds are fuse protected in case current is fed back to the ITC 18 interface A low impedance connection should be made if a common ground external power Ground supply is used As shown maximum drive currentis 350 mA Figure 4 ITC 18 Current Driver Out external connections O FUSE Current driver out ground fuse This fuse will open when current is fed back into the 7C 18 Replace fuse with a standard 1 5 inch type F 1 8A fuse only DIGITAL I O amp SEQUENCE OUTPUTS Dual 50 pin IDC connector 16 Digital input lines with individual grounds 16 Digital output lines with individual grounds Channel 1 and 7 sequencer outputs with individual grounds EXT CLK optional BNC connector The external clock option allows multiple ITC 18 interfaces to be synchronized by an external master clock Please contact Instrutech or your dealer for availability and specifications If this option is installed the absolute maximum voltage range for this input is 4 volts peak Do not exceed this range or damage can result to the input circuitry HOST COMPUTER 80 pin high density connector Connection to host interface board For Macintosh use either a MAC 18 NUBUS bus host or PCI 18 PCI bus host interface For Intel based computers use either a AT 16 ISA bus host or PCI 18 PCI bus host interface Note the inter connecting cable is supplied with the host interface card 16 INSTRUTECH
21. ing a scope or other instrument when data acquisition has started The true functionality of this output is software dependent This output is not isolated 2 2 Rear Panel Controls Y ZTN 3ra ner 1g a DIGITAL VO and SEQUENCER OUTPUTS AUX OUTPUTS 0 se ar e 0 i Figure 3 ITC 18 Rear Panel Controls O FUSE Replace fuse with a standard 20 mm type F 2A fuse only Littelfuse 217002 POWER CONNECTOR Accepts standard three wire IEC female type power cords The appropriate power cord will be provided with the ITC 18 The ITC 18 will function with a line voltage of 100 volts AC to 120 volts AC or 200 volts AC to 240 volts AC Acceptable line frequencies are from 47 hertz to 440 hertz The maximum power used by the ITC 18 is fifteen watts WARNING To avoid a shock hazard the ITC 18 must be plugged into a properly grounded receptacle 15 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL CURRENT DRIVER OUT DB 25 female connector The ITC 18 provides 14 digital output channels that can be used either as standard TTL levels or as current sink To use as current sink channels the connections to the external device is as follow 0 EN DIGITAL VO and SEQUENCER OUTPUTSEXT CLK SERIAL I O 0 CURRENT DRIVEROUT HOST COMPUTER VR 10 VR 100 100 240 VoLrs 000000000000 bai 00000000 e O IN campa Power Supply Maximum power supply voltage 50 Volts Di
22. ng individuals who have contributed their time and ideas to the development and testing of the ITC 18 computer interface Dr Fred Sigworth Yale University Dan Brown Bruxton Corporation Dr Hubert Affolter Heka electronik INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 1 General Information 1 1 Product intended usage The Instrutech 7C 18 PCI is intended for research use only in a laboratory by persons trained in its use Users are expected to be able to properly operate the ITC 18 PCI and associated instruments The Instrutech ITC 18 PCI is not intended for medical use The Instrutech ITC 18 PCI is not intended for use in life support situations or in situations were improper operation or failure of the ITC 18 PCI can result in personal injury Instrutech Corporation makes no representation that the design implementation testing or manufacture of the 7C 18 PCI meet reasonable standards for use as a medical product As stated in the Instrutech Limited Warranty Statement supplied with each product Instrutech Corporation expressly disclaims all warranties to buyer except the limited warranty set forth above including without limitation to any and all implied warranties of merchantability and fitness for a particular purpose 1 2 Accessories The following items should have been packed with your ITC 18 PCI Computer Interface 1 Power cord 110 volt or 220 volt type depending on application 1 ITC 18 Computer interfac
23. on either repair the defect or replace the defective Product or part thereof at no charge to the purchaser for parts and labor The Product must be returned to Instrutech Corporation postpaid and insured Instrutech Corporation will return the Product postpaid and insured in the most appropriate method as determined by Instrutech Corporation If a faster shipping service is desired by the customer any additional special delivery expenses must be paid by the customer This warranty does not apply to shipping damage Instrutech Corporation fully insures all shipments Any claims of damage upon receipt must be filed with the carrier and Instrutech Corporation immediately This warranty does not apply to any exterior appearance item of the Product which has been damaged or defaced which has been subjected to misuse and abuse abnormal service or handling or which has been altered or modified in design or construction This warranty does not apply to any interconnection cables supplied with the Product This warranty does not apply if any unauthorized repairs modifications or alterations have been made to the Product This warranty applies to software products only to the extent of maintenance release software to correct improper operation of the Product Software updates to increase the capabilities of the present product are not to be provided under the terms of this warranty Updates will be sent at no cost to the customer by normal common ca
24. rrier routes If faster delivery is desired the customer must assume any additional expenses for special delivery service No sales organizations other than Instrutech Corporation itself are authorized to make any warranties other than those described above or to extend the duration of any warranties beyond the time period described above on the behalf of Instrutech Corporation If Instrutech Corporation agrees to such a modification of this warranty Instrutech will furnish a modified copy of this agreement which must be presented if a claim is being made under these modified terms 10 2 Obtaining Warranty Service Warranty service of this Product can be obtained by returning the Product post paid and insured to Instrutech Corporation or one of its sales agents Prior authorization before shipping the product is advised for the most expedient service 29
25. ss to our WWW site our URL is http www instrutech com For access by anonymous FTP use the URL ftp ftp instrutech com By email send an empty message to info instrutech com for a document that will describe how to access Instrutech files by email If you do not have access to the Internet call Instrutech and request the ITC 18 driver disk of your choice 6 2 Igor XOP s Instrutech Corporation has available an XOP for Wavemetrics Igor that will allow researchers and developers to write custom applications using the ITC 18 Interface and Wavemetrics Igor software This XOP and the appropriate manual is available from Instrutech Corporation by request It is also available from Instrutech Corporation by Internet WWW FTP or email For access to our WWW site our URL is http www instrutech com For access by anonymous FTP use the URL ftp ftp instrutech com By email send an empty message to info instrutech com for a document that will describe how to access Instrutech files by email If you do not have access to the Internet call Instrutech and request the ITC 18 XOP diskette 22 INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL 7 Product Upgrades 7 1 PCI 18 adaptability The PCI 18 card is designed to be firmware upgradable by users should this ever become necessary to keep up with new developments in the specification for the PCI bus Do not attempt to do such an upgrade without the approval of Instrutech Corporation or one
26. tures of it s predecessor the ITC 16 The ITC 18 advances data acquisition to a new level Hardware Configuration The ITC 18 is a rack mountable unit It has BNC connectors for the analog inputs and outputs and ribbon cable connectors for the digital lines INSTRUTECH CORPORATION ITC 18 PCI USER S MANUAL The ITC 18 is connected to a host computer over a shielded cable to a host interface card Host interfaces boards are available for ISA bus PCI bus and NUBUS Moving the ITC 18 from one platform to another is a simple matter of replacing the host interface board This configuration is unique to data acquisition units Most data acquisition devices are printed circuit boards installed directly in the computer itself The interior of a computer is an electrically noisy environment At the very high speeds of modern computers even a short length of a conductive trace on a PC board acts as an antenna Certain kinds of data acquisition devices are not affected by such noise e g slow speed integrating A D converters but high speed high resolution A D and D A converters like the ones used in the ITC 18 are affected by such noise Mounting the electronics in an external box is the most effective way of reducing this noise Optical Isolation The analog electronics of the ITC 18 are optically isolated from the digital electronics and the computer This provides complete electrical isolation between the computer and the measurement
27. use a single A D converter with a multiplexer to select between input channels The multiplexer usually an integrated circuit is a single point where all analog input signals connect Crosstalk both from the multiplexer itself and from closely spaced printed circuit board traces causes signals appearing at one analog input to appear at other inputs as well The amount of crosstalk is usually frequency dependent High frequency signals can be affected significantly The ITC 18 design is particularly important when making measurements using multiple high frequency signal sources and analyzing the signals for correlation An added benefit to the ITC 18 design is that all analog inputs can be sampled simultaneously This simplifies analysis of high frequency correlation between signals since there is no time offset between sample points on the input channels The ITC 18 provides four 18 bit D A converters that feature high accuracy with less than 1 bit 300 microvolts of noise The ITC 18 provides sixteen digital input channels that feature level sensitive normal or inverted polarity or latched modes for maximum versatility Thirty two digital output channels fourteen capable of current sink for controlling perfusion valves and other devices Six programmable sequencer outputs for precise triggering from any entry in the sequence RAM All analog and digital input and output channels are sampled simultaneously for maximum precision The ITC
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