Keithley EXP-16 User Manual Download

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Summary of Contents for EXP-16

Page 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Page 2: ...EXP 16 and EXP 16 A User s Guide A G R E A T E R M E A S U R E O F C O N F I D E N C E...

Page 3: ...otherwise in accordance with the instructions therefore Keithley does not warrant that operation of the Keithley Software will be uninterrupted or error free and or that the Keithley Software will be...

Page 4: ...nt Pieters Leeuw 02 363 00 40 Fax 02 363 00 64 CHINA Yuan Chen Xin Building Room 705 12Yumin Road Dewai Madian Beijing 100029 8610 6202 2886 Fax 8610 6202 2892 FINLAND Tiet j ntie 2 02130 Espoo Phone...

Page 5: ...EXP 16 and EXP IG A User s Guide Revision E April 1995 Part Number 61590...

Page 6: ...ct Information Keithley Instruments Inc 28775 Aurora Road Cleveland OH 44139 Technical Support 1 888 KEITHLEY Monday Friday 8 00 a m to 5 00 p m EST Fax 440 248 6168 Visit our website at http www keit...

Page 7: ...IALDAMAGES RELATED TO THE USE OF THISPRODUCT THIS PRODUCT IS NOT DESIGNED WITH COMPONENTS OF A LEVEL OF RELIABILITY SUITABLE FOR USE IN LIFE SUPPORTOR CRITICAL APPLICATIONS Refer to your Keithley Inst...

Page 8: ...nstallation Category I and Installation Category II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most mea surement control and data I O signals are Installation...

Page 9: ...ld refer to the operating instructions located in the manual The symbol on an instrument shows that it can source or measure 1000 volts or more including the combined effect of normal and common mode...

Page 10: ...Setup Unwrapping and Inspecting Your Board 3 1 Locating Components 3 2 Activating Open Thermocouple Detection 3 3 Setting the Output Jumpers 3 5 Setting Gain 3 3 Selecting a CJC Channel 3 5 Selecting...

Page 11: ...N 1 Board 4 5 Avoiding Ground Loops 4 6 5 Calibration Equipment Requirements 5 1 Instrumentation Amplifier Calibration 5 2 CJC Circuit Calibration 5 4 6 Troubleshooting Problem Isolation 6 1 Common Pr...

Page 12: ...ource 4 6 Figure 4 6 Connecting a Floating Signal Source 4 6 Figure 5 1 Locations of Em 16 Calibration Components 5 3 Figure 5 2 Locations of EXP l6 A Calibration Components 5 3 Figure 6 1 EXP 16 or E...

Page 13: ...er 1 provides a n overview of the hardware features typical applications and accessories Chapter 2 provides a functional description of the EXP 16 and EXP I6 A including bIock diagrams Chapter 3 descr...

Page 14: ...Appendix D explains how to assign logical channel numbers for purposes of software control of your EXP 16or EXF 16 A An index completes this manual viii...

Page 15: ...detection Thetwo EXPs alsocontain a CJC coldjunction compensation circuit for correcting thermocouple readings This chapter briefly describes the EXP 16 and EXP 16 A and their features applications a...

Page 16: ...al amplification Signal conditioning Accessories Accessories for the EXP 16 and EXP l6 A are as follows C 1800is a cable for connecting a nEXP 16or EXP l6 A to a DAS 8 or DAS 800 Series board or to an...

Page 17: ...ctional Description This chapterdescribes features and operating optionsof the EXP 16 and EXP lWA Figure2 1 shows the block diagram 7 6 5 4 3 2 1 0 X Figure 2 1 Block Diagram of an EXP 16 and EXP 16IA...

Page 18: ...Input Channel Open Thermocouple Detection Each input circuit uses biasing resistors to enable open thermocouple detection Note that the 10ki2 resistor on the low input allows common mode voltages on t...

Page 19: ...istor across the channel screw terminals rather than in the mounting holes Multiplexer An Em 16 or EXP I6 A multiplexes signals from the 16 differential analog input channels into one signal for the a...

Page 20: ...10bits Cwith most 12 bitA D converters You can connect the CJC output voltage to any of the EXP 16 Series output lines usingjumper J3 refer to Figure 2 1 on page 2 1 The CJC circuit can support a dat...

Page 21: ...quipped with a grounded wrist strap discharge static electricity by holding the wrapped EXP in one hand while placing your other hand firmly on a metal portion ofthe computer chassis your computer mus...

Page 22: ...locations for key componentsof the EXP 16 and EXP I6 A OUTPLT m J 4 C J C w J 3 01 234587X I R Fl USER r E f R 0 piiiiiil Gain Switch Figure 3 1 Locationsof EXP 16 Key Components 52 I 1 dain Switch 3...

Page 23: ...nts use a soldering iron that is isolated grounded operates on less than40 V and develops no more than 40 W Setting Gain You control gain on an Em 16 orEXP lG Aeither with the gain switch or by instal...

Page 24: ...s be considered when choosing a value of gain or the output of the amplifier may saturate Also you can mix thermocouples of different types on one board so long as they all use the same gain For mixed...

Page 25: ...nnel The DAS board channel you choose for CJC must be different from the channel you choose for analog output If no cold junction compensation is required place the CJCjumper in position X of J3 Cauti...

Page 26: ...rations for an attached DAS 8 Seriesboard Output Jumper Location DAS Board Input Connector JllJ2 Channel Number Pin Number I 1 I 1 I 36 I I 3 I 3 I 34 I I 5 I 5 32 I I 7 I 7 30 I As Table 3 2 shows th...

Page 27: ...EXP 16 or EXP 16IA main 1 1 0connector Using External 5 V Only To use an external 5 V supply only with the EXP 16 and EXP IG A perform the following procedure 1 Install a PG408A DC DC converter modul...

Page 28: ...ries board or by way of an S 1600cable when connected to a DAS 16 1600 1400 1200 Series board The 5 V power from a DASCON 1 board however arrives on pin 20 by way of a C 1800cable The following two su...

Page 29: ...cts the two boards If a PG 408A module is installed on the EXP 16 or EXP l6 A set switch S1to INT or DC DC If a PG 408A is not installed set switch S1to EXT Note that the computer I O bus has a limite...

Page 30: ...se either connector for connection to a DAS board and the other for connection to a n STA XX or an additional Em 16 or EXP l6 A The two connectors are 37 pin D type and are labeled J1 and J2 Figure 4...

Page 31: ...have six or seven single endedinputs remaining dependingon whether cold junction compensation is used Figure4 2 illustrates a daisy chain of a DAS board severalEXP 16s or EXP 16 As and an STA XX outpo...

Page 32: ...rds you must use the optional PG 408A DCDC converters and set switch S1to INT or DC DC On the EXP l6 A the jumper at J9 should be on the two pins farthest from switch S I inits defaultposition as show...

Page 33: ...16s or EXP l6 As with a DAS 8PGAlpCDAS 8PGA Board You can add EXP 16s or EXP l6 As to any or dl of the eight analog inputs of a DAS XPGA pCDAS 8PGA An EXP 16 or EXP l6 A multiplexes 16 inputs into a s...

Page 34: ...DAS boards also require each connected EXF 16 or EXP 16 A to be used with a PG408A DCDC converter module and that switch S 1be set for JNT or DCDC On an EXP l6 A the jumper at J9 must be on the two p...

Page 35: ...you are driving an EX 16or EXP l6 A horn a signal source that is already grounded do not connect the EXP slow level ground L GND to its channel s low input LO Figure 4 5 illustrates the correct connec...

Page 36: ...rature stable environment can be one year or more In a dusty or varying temperature environment the calibration period can be as littIe asthree months Equipment Requirernents You must have the followi...

Page 37: ...s shown in Figure 5 1 and Figure 5 2 below Set the gain switch to 1000 Adjust the zero in potentiometer Em 16 R75 EXl 16A R49 until the multimeter reads 0 VDC Set the gain switch to 0 5 Adjust the zer...

Page 38: ...J2 r _ l 1 PG408A I 1 if used I L in Switch Figure5 1 Locationsof EXP 16CalibrationComponents Figure5 2 Locations of EXP lG A CalibrationComponents Instrumentation Amplifier Calibration 5 3...

Page 39: ...mper 33 2 Monitor the temperature in the vicinity of CR2 the CJC sensor 3 Adjust the CJC ADJ potentiometer Em 16 R77 Em 16A R33 to obtain a multimeter reading of 24 4 mV per C for example if the digit...

Page 40: ...the components in a simple measurement system using anEm 16 or EXP l6 A EXP 16 or 0 EXP IWA I HOSTPC Figure6 1 EXP 16 or EXP lG A System Components Measurement systems that use theEXP 16 or EXP l6 A...

Page 41: ...mple if you have another DAS board that is functional use it to replace the DAS board in a malfunctioning system If the malfunctioning system then works you have isolated the problem to the original D...

Page 42: ...om them Make sure you are using the correct cable to connect the DAS board to the EXP 16 or EXP l6 A Make sure the PC cover i s installed Re route the cable away from likely sourcesof emissions such a...

Page 43: ...Table 6 1 Problems and Suggested Solutions cont j Symptom IPossible Cause ISuggestions I Technical Support 6 4 Troubleshooting...

Page 44: ...ls Number of Ew 16 DAS board configuration Computer Model Serial Revision code Base address setting Interrupt level setting Number of channels Input S E or Diff Mode uni or bip DMA channel s Manufactu...

Page 45: ...ide of the shipping container When returning equipment for repair please include the following information Your name address and telephone number A description of the problem or its symptoms The RMA n...

Page 46: ...6 A Table A I Analog Data 1 Feature ISpecification I 1 Temperature coefficient 15 ppm typical 15ppm maximum 1 1 Commonmode range 1k1O V maximum I IAnalog output current I20 mA maximum I Table A 2 Cold...

Page 47: ...ere obtained without an input filter Settling timesobtained with standard input filter two 1k nresistors and a 1 pF capacitor are greater Table A 4 Power Requirements Common instrumentation IFeature I...

Page 48: ...Table A 6 Physical Specifications I Feature ISpecification I Weidt I 0 5 lb I I screw terminal wire sizes I 12 to 22 AWG I A 3...

Page 49: ...cabIed to the DAS board and the second J2 is normally cabled to an additional EXP 16 or EXP 16 A or to another types of accessory Pin assignments for the main I O connectors are shown in Figure B 1 1...

Page 50: ...ALL Mode 14 see the DAS 8 user s guide for a description of CALLmodes Upon execution of the Mode 14 C a L the OPO to OP3 outputs of the DAS 8 remain fixed any subsequent DAS 8 routines are performed o...

Page 51: ...f more than one of the DAS 8 input channels are to be used they can be scanned simply by nestingfor next loops Software Support for Low Level Devices The outputs of low level transducers such as therm...

Page 52: ...y also wish to copy BASICA COM from your DOS diskette to the EXP 16 software diskette The thermocouple subroutines are in ASCII to facilitate merging them into your own BASIC programs Each subroutine...

Page 53: ...numbered 0 through 7 If you require additional channels you can use up to eight 16 channelEXP 16 Series expansion accessoriesto increase the number of available channels to 128 Expansion accessories a...

Page 54: ...og input channels physical channels 3 through 7 in software as logical channels 48 through 52 0 1 chmneIs 0t015 EXP 16 channels 16 to 31 2 DAS 8 800 3 Series Board 4 Onboard I 5 channels Figure 0 1 An...

Page 55: ...4to 79 I I 6 I 96 to 111 I I 8 I 128 to 143 I I 10 I 160to 175 I I 12 I 192to 207 I I 14 I 224 to 239 I Figure D 2 illustrates the use of three Em 16 or EXF lG As and the 13 remaining onboard channels...

Page 56: ...annels 32 to 47 You refer to the remaining 13 onboard analog input channels physical channels 3 to 15 in software as logical channels 48 to 60 EXP 16 channels 010 15 EXP 16 16 to 31 channels DAS 16 16...

Page 57: ...5 3 connecting multipIe boards 4 2 connecting to DAS 16 l600 1400Series boards 4 3 DAS sAOLT Boards 4 5 DAS gPGA PCDAS 8PGA 4 4 DASCON 1 Board 4 5 STA XX accessory 4 2 connectors main I O 4 1 current...

Page 58: ...ignments main I O connectors B 1 problem isolation6 1 programming example C 1 resistor current measuring 2 3 gain adjustment 2 4 3 4 RMA number 6 6 5 5 1600 cable 1 2 4 3 selecting CJC channel 3 5 CJC...

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