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DT8871U and DT8871 User's Manual for LXI Temperature Instruments

1. Note TEMPpoint instruments do not support Auto MDIX 145 Appendix A 146 Connector Pin Assignments Appendix B 148 Table 20 lists the pin assignments for the 37 pin digital I O connector on the DT8871U and DT8871 instruments Table 20 Digital O Connector Pin Assignments Pin Description Pin Description 1 Digital Input 0 2 Digital Input 1 20 Digital Input 0 3 Digital Input 2 21 Digital Input 1 4 Digital Input 3 22 Digital Input 2 5 Digital Input 4 23 Digital Input 3 6 Digital Input 5 24 Digital Input 4 T7 Digital Input 6 25 Digital Input 5 8 Digital Input 7 26 Digital Input 6 9 Not Connected 27 Digital Input 7 10 Digital Output 0 28 Not Connected 11 Digital Output 1 29 Digital Output 0 12 Digital Output 2 30 Digital Output 1 13 Digital Output 3 31 Digital Output 2 14 Digital Output 4 32 Digital Output 3 15 Digital Output 5 33 Digital Output 4 16 Digital Output 6 34 Digital Output 5 17 Digital Output 7 35 Digital Output 6 18 Not Connected 36 Digital Output 7 19 Not Connected 37 Not Connected 7 A Using the TEMPpoint Application CWerVIBW ciilcenizaecco edri bka rca e yere pi Er Eg e ETE 150 Running the TEMPpoint Application 4 151 Changing the Configuration of Your TEMPpoint Instrument 154 Detining AL LUIS cesse eerte Ree CES 157 Logging Data to D
2. 162 Using the TEMPpoint Application Viewing a Data File To view the data that you recorded in an hpf file with the Chart Recorder perform the following steps 1 2 Optional From the Windows menu select File Viewer From the File menu select Load Data File You are prompted to select the name of the data file to view Select the name of the data file to view and then click Open The data file is displayed in the File Viewer window You can then scroll through the data change the scale of the display print the data and so on Refer to the online help provided with the TEMPpoint application for more information about these features When you are finished viewing the data file click Close 163 Appendix C Reading Digital Input Values To read the state of the digital input port perform the following steps 1 Click the IN button from the upper left of your screen or from the Windows menu select Digital Output Panel A screen similar to the following appears TEMPpoint Digital Input Panel In InS In7 Decimal Value 56 In4 In3 In2 In1 ind Note The LED indicator turns green when a value of 1 is detected on the digital input line and turns gray when a value of 0 is detected on the digital input line 164 Using the TEMPpoint Application Exiting from the TEMPpoint Application When you finished using the TEMPpoint application exit from the application by select
3. 3 In the General tab window double click Internet protocol TCP IP If a TCP IP selection is not listed click Install select Protocol click Add select the TCP IP protocol and click Install and repeat step 3 Internet Protocol TCP IP Properties General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address IP address Subnet mask Default gateway Use the following DNS server addresses Prefered DNS server E Altemate DNS server 4 IMPORTANT Write down the IP address and subnet mask that is displayed You will need this information later 5 Select Obtain an IP address automatically and then click OK 169 Appendix D Internet Protocol TCP IP Properties General Altemate Configuration You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address IP addre Subnet mask Default gateway Obtain DNS server address automatically Use the following DNS server addresses a Preferred DNS server Alternate DNS server 6 Select the Alternate Configuration tab and ensu
4. 0 00 e eee eee eee 108 Conversion Modes 00 eee e cece eee eens 109 Simultaneous Single Value Operations 109 Continuous Scan Mode sss esses 109 Specifying Channels for a Continuous Scan Operation 6 6 eee eee ee 110 How Continuous Scan Works 111 Filtering PC 112 Contents Data Format 122 ale tere tens Scr ngs hn Ra lon te oa denen oat tu i tenda 113 Error Conditions ers rreryeirriivesi erti eese 113 Digital 1 O Features cccee memes mes 115 Digital Input Lines picce ssec peek heeii kiea 115 Digital Output Lines sssseesseeeeeeeeeeee 116 Channel to Channel Isolation lesse esse 117 Resolution eee pe paese re eios 117 Operation Modes ssssssseeseeeeeee 118 Chapter 7 Troubleshooting Lll 119 General Checklist 00 cee cece cece eens 120 Technical Support 2 cise edeorache ew arg eee 125 If Your DT8871U or DT8871 Needs Factory Service 126 Appendix A Specifications essse 127 Analog Input Specifications 128 Basic Instrument Specifications 00005 128 Thermocouple Specifications 0000 129 System Temperature Error for the DT8871U 129 System Temperature Error for the DT8871 132 Isolation and Protection Specifications 135 Memory Specifications 136 Temperature Stability Specifications 13
5. 4 Optional Select a Digital Output bit to set from the drop down list box for this channel This bit will be set active when the limit range is exceeded high or low When multiple channels are configured to set a digital output bit a logical OR condition exists between them and any value out of range sets the bit 5 Click Save configuration to apply your changes If you do not save before leaving this page your changes are lost You can also click the Discard changes button before you save to return to the previous configuration if desired 86 Verifying the Operation of the DT8871U or DT8871 Digital Input Configuration Use the Configuration gt Digital In web page to configure the digital input lines of your TEMPpoint instrument DATATRANSLATION j M M pent eM DEBET SHE Digital Input Configuration Home SSE Save nian LAN um Channel E 0 LED1 Scan rate Filter 1 LED2 Limits 2 Switch Digital In ee Digital Out 3 Vave Measurement amp control 4 Channel 5 Digital Input Digital Output 6 File 7 Download Measurements Help Topics Technical Support To change your digital input configuration do the following 1 Under Label type text in the fields for each channel if you want to describe the channel 2 Click Save configuration to apply your changes If you do not save before leaving this page your changes are lost You can
6. Supported Measurement Range Thermocouple Type Minimum Maximum B 0 C 32 F 1820 C 3308 F E 200 C 328 F 1000 C 1832 F J 210 C 346 F 1200 C 2192 F K 200 C 328 F 1370 C 2498 F N 200 C 328 F 1300 C 2372 F R 50 C 58 F 1750 C 3182 F S 50 C 58 F 1750 C 3182 F T 200 C 328 F 400 C 752 F Refer to Appendix A for the thermocouple accuracy of the DT8871U and DT8871 over the dynamic range of the instrument Principles of Operation Cold Junction Compensation Each analog input channel has its own cold junction compensation CJC at the input The software reads the value of the CJC input along with the value of the analog input channel and automatically corrects for errors based on the specified thermocouple type and the thermocouple linearization data stored in onboard ROM A separate multiplexed A D is used to acquire all the CJC input values The software takes care of correlating the CJC measurements with the analog input measurements Note The TEMPpoint software provides the option of returning CJC values in the data stream This option is seldom used but is provided if you want to implement your own temperature conversion algorithms in software when using continuous operations Refer to page 113 for more information on this feature Open Thermocouple Detection Break detection circuitry 100 nA is provided to ensure that open t
7. 0 86 C 0 35 C 300 C 0 29 C 0 34 C 0 29 C 0 26 C 0 75 C 0 71 C 1 84 C 0 33 C 500 C 0 28 C 0 31 C 0 26 C 0 71 C 0 66 C 1 2 C 0 33 C 700 C 0 27 C 0 3 C 0 27 C 0 68 C 0 63 C 0 92 C 0 33 C 900 C 0 27 C 0 34 C 0 28 C 0 66 C 0 6 C 0 8 C 0 33 C 1100 C 0 28 C 0 34 C 0 64 C 0 58 C 0 71 C 0 34 C 14000C oce 0 62 C 0 56 C 0 64 C a Conditions for accuracy measurements Warm up time of 30 minutes Inclusive of typical 0 2 C CJC error maximum CJC error is 0 3 C Inclusive of typical 5 uV offset error maximum offset error is 50 uV Exclusive of thermocouple errors Exclusive of noise see Figure 24 and Figure 25 for more information about system noise 132 Specifications The histograms shown in Figure 24 andFigure 25 characterize the Gaussian system noise distribution for each of the available filter types on the DT8871 Note that converting uV error to temperature error depends on thermocouple type For example a K thermocouple changes approximately 39 uV per degrees C therefore a noise level of 10 uV adds 0 3 C error 10 uV 39 uV for a type K thermocouple HISTOGRAM OF SYSTEM NOISE 1200 1000 800 600 400 Numbe
8. Java 67 L LAN configuration 79 connecting to a private LAN 41 connecting to a site LAN 39 LED 49 LEDs ENet Activity 48 ENet Link 48 49 LAN 49 LMT 48 106 107 OPN 48 105 107 Power 45 USB 48 limit configuration 85 LMT LED 48 106 107 logging data to disk 160 M Measure Foundry 20 mechanical relays controlling 64 Microsoft Excel 73 Microsoft Notepad 73 N network settings 167 NI VISA 31 Notepad 73 179 Index 180 O open thermocouple detection 105 operation modes continuous analog input scan mode 109 digital I O 118 simultaneous single value analog input 109 OPN LED 48 105 107 out of range data 106 P password 80 physical specifications 141 pinging the instrument 121 122 pop up blockers 72 power applying 44 specifications 141 preparing to wire signals 53 prerequisite software 31 private LAN 41 connecting directly to a computer 42 connecting using a hub or switch 41 R rack mounting 22 ranges analog input 106 recommendations for wiring 53 recording data 160 regulatory specifications 142 requirements 30 requirements for web interface 67 associating CSV files 73 Internet Explorer browser settings 68 Java 67 Reset pin 50 resetting the instrument 50 resolution analog input 107 digital I O 117 returning boards to the factory 126 RJ45 connector specifications 144 RMA 126 router using with a site LAN 40 S sample clock 108 sample rate 111 scan operations analog
9. specify the static IP address and subnet mask that was initially assigned to the PC see page 168 and click OK Internet Protocol TCP IP Properties General You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address IP address NE S T Subnet mask zmm 25 25 0 Default gateway Use the following DNS server addresses Preferred DNS server Altemate DNS server Configuring Network Settings on Your PC Renew the IP address of the computer From the Windows Start menu click Settings gt Network Connections gt Local Area Connection gt Support gt Repair Or if you prefer to do this from the command prompt window click Run from the Windows Start menu enter cmd and click OK to bring up the command prompt window Then from the command prompt window enter ipconfig renew renews the IP address ipconfig all checks the IP address 175 Appendix D 176 A accessories 22 accuracy specifications thermocouple 130 132 Active Scripting 68 activity Ethernet LED 48 address string 46 Agilent VISA 31 alarm limit configuration 85 alias VISA 46 analog input calibration 107 channels 102 CJCs 105 configuration 81 continuous operations 109 conversion modes 109 data format 113 differential c
10. Channels that you want to measure Scan rate Filter Alarm limits Digital I O lines LAN Configuration Use the Configuration gt LAN web page to configure the Local Area Network LAN settings for the TEMPpoint instrument 79 Chapter 5 DATATRANSLATION MPpernt DT8871 48 Home LAN Configuration Configuration i LAN item n ae Channel Hostname local host Scan rate Filter Description LXI ceritified at LXI PlugFest Feb 2008 Limits DHCP Potanin Automatic private IP address enabled Measurement amp control Static Channel Static IP Address configuration Ngita 63 IP Digital Input IP address assignment Digital Output Mask File 192 168 187 218 Gateway Download Measurements Primary DNS Help Secondary DNS Topics Primary SNTP server 192 43 244 18 Technical Support Secondary SNTP server 132 163 4 101 Password When you first access your TEMPpoint instrument the LAN settings that the instrument obtained through DHCP or AutoIP should be sufficient If you need to make changes later click the Modify button to enable changes Note If you want to assign a static IP address ensure that you uncheck the checkbox called Automatic private IP address enabled When you click Modify you must supply a password for the instrument The username is sysadmin it cannot be changed The default passwo
11. Ifyou wish to install the Eureka Discovery Utility recommended click Eureka Discovery Utility from the TEMPpoint Installation web site and follow the prompts to install the software and help file 5 Ifyouare installing from the TEMPpoint CD perform these steps Click Install TEMPpoint b Ensure that TEMPpoint Software amp Application is selected c If you wish to install the evaluation version of Measure Foundry in addition to the TEMPpoint application also select Measure Foundry EVAL Note To use Measure Foundry with the TEMPpoint instruments select the evaluation version of Measure Foundry Pro Instruments Pak d Ifyou wish to install the Eureka Discovery Utility recommended select Eureka Discovery Utility e Click Install Selected Features and follow the prompts to install the software f When you are finished with the TEMPpoint CD click Quit Installer For information on using the TEMPpoint application to verify the operation of the DT8871U or DT8871 instrument refer to Chapter 5 starting on page 65 33 Chapter 2 Installing SCPI Support Software Note The DT8871U DT8871 and DT8872 TEMPpoint instruments do not support DT Open Layers programming Do not select the USB only packages If you wish you can develop application programs for the DT8871U and DT8871 TEMPpoint instruments using SCPI Standard Commands for Programmable Instruments To install the SCPI example pro
12. Local Intranet Zone 0 0000 e eee 70 Trusted Sites Zone 71 Pop up Blockers 0 00 e eee eee eee eee 72 Associating CSV Files with Microsoft Excel or Notepad 73 Contents Locating Your Instrument on the LAN sssssuuese 75 Configuring the Instrument sslssssseeseese 79 LAN Configuration esisi iie e E 79 Channel Configuration a sses ssa sss errar 81 Scan Rate occserditas dr d dure a ERES PEE EE 82 Filter Configuration 00 000 cee eee ee 83 Alarm Limits Configuration 000 85 Digital Input Configuration 0 0005 87 Digital Output Configuration 000 88 Measuring Data and Controlling the Instrument 89 Starting and Stopping a Scan 000 000008 89 Controlling the Digital Outputs 0 00 91 Reading the Digital Inputs 00084 92 Downloading Measurements 00 000 eee eee eee 93 Chapter 6 Principles of Operation 99 Analog Input Features 0 0000 e eee eee eee 102 Analog Input Channels 0 06000 ranra 102 Cold Junction Compensation 6 000 e eee 105 Open Thermocouple Detection 000 105 Input Ranges and Out of Range Data 106 Resolution Aer Les ER eRRERR REUS e ERE 107 Calibration eere epe ket ee merde eee eder dede 107 Sample Clock Source
13. entire digital output port You can also return the value of the entire digital input port in the analog input data stream if you want to correlate analog input data with digital events refer to page 109 for more information 118 Troubleshooting General hecklisk o cedere RI RIP RPDRESSE 120 Technical SUP POM sce rey de teppet de eene pete ds 125 If Your DT8871U or DT8871 Needs Factory Service 126 119 Chapter 7 120 General Checklist Should you experience problems using a DT8871U or DT8871 temperature instrument do the following 1 Read all the documentation provided for your product Make sure that you have added any Read This First information to your manual and that you have used this information Check the TEMPpoint CD for any README files and ensure that you have used the latest installation and configuration information available Check that your system meets the requirements stated in Chapter 2 Check that you have installed your hardware properly using the instructions in Chapter 3 Check that you have wired your signals properly using the instructions in Chapter 4 Check that you have installed Java and configured your web browser appropriately using the instructions on page 67 Search the DT Knowledgebase in the Support section of the Data Translation web site at www datatranslation com for an answer to your problem If you still experience problems try using the in
14. for the name and telephone number of your nearest distributor Sample Clock Source The DT8871U and DT8871 temperature instruments support an internal clock with a maximum sampling rate of 10 Samples s Use software to specify an internal clock source and a clock frequency between 0 000152590219 Hz and 10 0 Hz Note The clock frequency that you specify is rounded to the closest correct value that the instrument can accept without error Internally the 10 Hz clock is divided by an integer in the range of 1 to 65535 the internal clock divider to determine the closest value Using software you can query this setting to determine the actual clock frequency that is used When the continuous operation is started all the channels specified in the channel list are read simultaneously at the specified clock frequency Principles of Operation Conversion Modes The DT8871U and DT8871 temperature instruments support simultaneous single value and continuous scan conversion modes for reading the values of the analog input channels This section describes each of these conversion modes Simultaneous Single Value Operations If you want a snapshot of all the analog input channels at one point in time you can perform a simultaneous single value operation also called a single values operation using SCPI commands Note This operation mode is supported in SCPI only it is not supported by the IVI COM driver or the instrume
15. 121 Trusted Site zone 71 U unpacking 29 USB LED 48 username 80 UTC 78 V VISA alias 46 VISA resource string 46 voltage ranges 106 VXI 11 clients 67 W warm up time 53 web interface 19 alarm limit configuration 85 analog input channel configuration 81 clients 67 controlling the digital outputs 91 181 Index 182 digital input configuration 87 digital output configuration 88 downloading measurements 93 filter configuration 83 LAN configuration 79 measurement and controlling the instrument 89 reading the digital inputs 92 requirements for using 67 scan rate configuration 82 starting and stopping a scan 89 wiring signals current loop inputs 59 digital inputs 63 digital outputs 64 preparing 53 recommendations 53 thermocouple inputs 55 voltages 58 warm up time 53 Z zones Internet 69 Intranet 70 Trusted Site 71
16. 82 2 Under Type select the sensor type for each configured channel from the drop down list boxes You can use the Set all button to change all channels to the sensor type specified in the heading s drop down list box 3 Under Label type text in the fields for each configured channel if you want to describe the channel 4 Click Save configuration to apply your changes If you do not save before leaving this page your changes are lost You can also click the Discard changes button before you save to return to the previous configuration if desired Scan Rate Use the Configuration gt Scan Rate web page to set the scan rate for all channels on the instrument DATATRANSLATION MPpeent LXI DT8871 48 Home Configuration Save configuration Discard changes LAN Scan Rate LIL d Channel 10 000000 Hz Sr r Scan rate Minimum 0 000153Hz maximum 10 0000Hz Filter Limits Digital In Digital Out To change your instrument s scan rate do the following 1 Typea value in Hertz between the minimum and maximum shown in the Scan Rate field Verifying the Operation of the DT8871U or DT8871 Note The scan rate that you specify is rounded to the closest correct value that the instrument can accept without error Internally the 10 Hz clock is divided by an integer in the range of 1 to 65535 the internal clock divider to determine the closest value When you save the sc
17. Eg EE EE EE EE EE Be HE Bg 157 Appendix C 158 2 Digital Output Definition If you want to change the minimum alarm limit for a channel enter a value in the Min field for that channel and then click Set next to the value that you entered If you want to change the maximum alarm limit for a channel enter a value in the Max field for that channel and then click Set next to the value that you entered If you want to set a digital output line when the alarm limits for a channel are exceeded click the Open Digital Output Definition Window button from the Limit Definition screen The following screen appears For each channel select the digital output line bit that you want to turn on when the limits for a channel are exceeded If you do not want to set a digital output line when the alarm limits are exceeded choose none Using the TEMPpoint Application Note You can assign the same digital output line to multiple channels The digital output line is turned on 1 when any of the alarm limits are exceeded on the channels that were assigned to that digital output line If alarm limits are not exceeded the digital output line is turned off 0 6 To see the state of the digital output lines click the OUT button from the upper left of your screen or select the Windows menu and then select Digital Output Panel A
18. LAN Channel scan measurements Meter Digital In Digital Out Measurement amp control Channel Digital Input Digital Output Press the Start scan button to begin acquiring data from the sensors The measurements are displayed on the screen 89 Chapter 5 DATATRANSLATION MPpesnt DT8871 24 Home Configuration LAN Channel Scan rate Filter Limits Digital In Digital Out Measurement amp control Channel Digital Input Digital Output File Download Measurements Help Topics Technical Support LXI Scan Control e en Channel scan measurements Notice the following aspects of the display When acquiring data the Start scan button changes to say Stop scan and the currently configured scan rate is displayed Each box on the Meter tab represents one of the analog input channels in the same position as the physical connectors If you configured custom labels for some of the channels those labels are shown here rather than the channel numbers Red boxes indicate that the value is out of range for the specified RTD type The values are updated only for the channels that you enabled and at the scan rate you configured Press the Stop scan button to stop acquiring data from the sensors Verifying the Operation of the DT8871U or DT8871 Controlling the Digital Outputs Use the Measurement amp control gt Digital Output web page to view the curren
19. Panel of the DT8871U or DT8871 48 Setting Up and Installing the DT8871U or DT8871 Table 5 Using TEMPpoint LEDs to Determine Ethernet Activity LEDs Color Description LAN LED Solid Green TEMPpoint instrument has valid IP address on front panel Blinking Green TEMPpoint instrument identified using the Web interface see page 75 for more information Red If the Ethernet link is operational the instrument does not have a valid IP address Otherwise the Ethernet link is not operational ENet Link LED Yellow Ethernet link operational on rear panel f Off Ethernet link not operational ENet Activity LED Green Network traffic detected on rear panel Off No network traffic detected 49 Chapter 3 Resetting the Instrument If needed you can restore the default configuration of your TEMPpoint instrument by pressing the Reset pin on the rear panel of the instrument shown in Figure 8 on page 48 until the LAN LED on the front panel turns off which takes approximately 5 seconds and then releasing the Reset pin The instrument reboots automatically using the factory default LAN configuration DHCP and auto IP enabled this process typically takes up to 40 seconds to complete This forces the instrument to re acquire an IP address from the DHCP server or if that fails to use Auto IP to get an IP address Note The default configuration overwrites any changes
20. Specifications Feature Specifications Emissions EMI FCC Part 15 EN55022 1994 A1 1995 A2 1997 VCCI AS NZS 3548 Class A Immunity EN61000 6 1 2001 RoHS EU Directive 2002 95 EG Compliant as of July 1st 2006 Aerospace Material Specification Compliant with AMS2750D 142 Specifications Thermocouple Connector Specifications Table 18 lists the thermocouple connector specifications for the DT8871U and DT8871 temperature instruments Table 18 Thermocouple Connector Specifications Feature Specifications Thermocouple jacks Cu Cu Omega plugs White SMPW U M Thermocouple connector Omega partit PCC SMP U 100 R CE ROHS 143 Appendix A Ethernet RJ45 Connector Specifications The Ethernet RJ45 connector used on the TEMPpoint instruments is shown in Figure 26 E Jw Pin 1 Figure 26 Ethernet RJ45 Connector The pin assignments of this connector are described in Table 19 Table 19 Ethernet Connector Pin Assignments Pin Signal Name Description 1 TXD Transmit Data 2 TXD Transmit Data 3 RXD Receive Data 4 EPWR Power from Switch 5 EPWR Power from Switch 144 Specifications Table 19 Ethernet Connector Pin Assignments cont Pin Signal Name Description 6 RXD Receive Data 7 EPWR Power from Switch 8 EPWR Power from Switch
21. are still available after power on but the channel and digital I O labels and channel limits are lost 136 Specifications Temperature Stability Specifications Table 13 lists the temperature stability specifications for the analog input subsystem on the DT8871U and DT8871 temperature instruments Table 13 Temperature Stability Specifications Feature Specifications Additional error due to ambient temperature change J type thermocouple K type thermocouple B type thermocouple E type thermocouple N type thermocouple R type thermocouple S type thermocouple T type thermocouple 0 010 C per degree ambient change typical 0 011 C per degree ambient change typical 0 014 C per degree ambient change typical 0 010 C per degree ambient change typical 0 011 C per degree ambient change typical 0 012 C per degree ambient change typical 0 012 C per degree ambient change typical 0 010 C per degree ambient change typical Warm up time 30 minutes CJC Error 0 2 C Accuracy Corrected in ROM 25 C to zero error Drift per year 50 ppm typical a Includes the A D reference gain and CJC errors 137 Appendix A 138 Voltage Measurement Specifications Table 14 lists the voltage measurement specifications for the analog input subsystem on the DT8871U and DT8871 temperature instruments Table 14 Voltage Measurement Specifications Feature Specif
22. has been stopped all the data in the buffer is downloaded to a comma separated CSV file starting with the most recent data Most Recent Data Circular Buffer Y pa Beginning of Buffer End of Buffer If scanning is in progress a snapshot of the data from the most recent data at the time that the Download button was clicked to the oldest data in the buffer is downloaded to a comma separated CSV file Most Recent Data Circular Buffer Y N Oldest Data A Beginning of Buffer End of Buffer 94 Verifying the Operation of the DT8871U or DT8871 2 Inthe resulting dialog box choose Open or Save Ifyou choose Open the CSV file opens in the associated application Microsoft Excel or Notepad Ifyou choose Save you can open the CSV file in Microsoft Excel Notepad or other utilities for analysis at a later time Under some circumstances your data may be displayed in a frame in the browser or Excel may open the data in the frame DATATRANSLATION MPpeent LXI DT8871 48 f Scan rate Home Configuration LAN Time ichanO Channel IC IC ic jc Scan rate 2 14 30 13 24 98 2329 26890penTC Filter 2008 14 30 13 24 98 2329 26 9 openTC J8 14 30 12 24 99 23 29 26 91 open TC f 14 30 12 24 99 2329 26 914 openTC Paraan 14 30 12 25 233 26 91 open TC Digital Out 14 30 12 25 23 3 26 91 open TC Measu
23. input 109 scan rate 82 SCPI clients 67 installing 34 programming 20 security levels 69 Internet zone 69 Intranet zone 70 Trusted Site zone 71 SENSOR IS OPEN 105 signal connections 54 simultaneous single value analog input 109 site LAN 39 connecting using a hub switch or router 40 connecting without using a hub switch or router 40 software packages 20 solid state relays controlling 64 Index sourcing 64 specifications 127 147 149 167 analog input 129 135 136 basic instrument 128 digital I O 140 environmental 141 physical 141 power 141 regulatory 142 143 RJ45 connector 144 temperature stability 137 thermocouple connectors 143 voltage measurement 138 static IP address 80 static IP addresses 168 174 STP37 screw terminal panel 22 61 switch using with a private LAN 41 using with a site LAN 40 system requirements 30 T TCP IP configuration 46 technical support 125 TEMPpoint application 19 configuring 154 defining alarm limits 157 exiting 165 features 150 installing 32 logging data to disk 160 opening a data file in Excel 162 reading the digital input lines 164 running 151 updating the digital output lines 159 using the Chart Recorder 160 viewing a data file 163 TEMPpoint Calibration Utility 20 thermocouple accuracy specifications 130 132 thermocouple connector specifications 143 Thermocouple Open LED 48 time zone 77 troubleshooting procedure 120 technical support 125 troubleshooting table
24. screen similar to the following appears TEMPpoint Digital Output Panel 159 Appendix C Logging Data to Disk To log data to disk perform the following steps 1 Ensure that you configured the channels that you want to log to disk see page 155 2 Start acquisition by clicking Start Acquisition from the Acquisition menu or by clicking Start Stop from the main window 3 Click the CRT button from the upper left of your screen or from the Windows menu select Chart Recorder A screen similar to the following appears KJ TEMPpoint Chart Recorder Channel Visibility Sampling every 2 seconds 5 Hz Time Axis Length mo a1 a2 a3 m4 gs v RIT Single Band Multiple Bands CJE LJe 7 00 00 00 00 25 00 00 50 00 01 15 00 01 40 00 02 05 00 02 30 00 02 55 Open Last Recording in Excel Start Recording J X t s 160 Using the TEMPpoint Application Under Channel Visibility select the channels that you want to be visible on the display Note The first time that you run the TEMPpoint application all the channels are visible From the Time Axis Length drop down list select the time 10 Seconds 1 Minute 5 Minutes 10 Minutes 30 Minutes 1 Hour 2 Hours 4 Hours to use for the time axis If you want to display all the data on a single band leave the Single Band Multiple Band button untouched the button indicator is green If you want to display the data for ea
25. that you have made to the LAN configuration using the instrument s web interface 50 NL Wiring Signals Preparing to Wire Signals crede bee eee n 53 Connecting Thermocouple Inputs 00 0 2 e eee 55 Connecting Voltage Inputs 02 issus Ree ren 58 Connecting Current Loop Inputs 6 60 eee eee 59 Connecting Digital I O Signals 0000 61 51 Chapter 4 52 C Prepare to Use the DT8871U or DT8871 see Chapter 2 starting on page 27 ET a Set Up and Install the DT8871U or DT8871 see Chapter 3 s tarting on page 37 Wire Signals this c hapter the Operation of the DT8871U or DT887 see Chapter 5 starting on page 65 Wiring Signals Preparing to Wire Signals This section provides recommendations and information about wiring signals to the DT8871U or DT8871 temperature instrument Wiring Recommendations Keep the following recommendations in mind when wiring signals to a DT8871U or DT8871 temperature instrument Separate power and signal lines by using physically different wiring paths or conduits e To avoid noise do not locate the TEMPpoint instrument and cabling next to sources that produce high electromagnetic fields such as large electric motors computer monitors power lines solenoids and electric arcs unless the signals are enclosed in a mumetal shield Locate the TEMPpoint front pa
26. 0 P EL Hot X Neutral uoce 120 V AC pin 29 Digital Out 0 or 240 V AC ee 30V DC 400 mA Output can switch AC or DC Figure 15 Switching up to 30 V at 400 mA 64 JJ Verifying the Operation of the DT8871U or DT8871 Before Using the Web Interface ssssseessseeess 67 Locating Your Instrument on the LAN 00 75 Configuring the Instrument 6 cece eee pes 79 Measuring Data and Controlling the Instrument 89 Downloading Measurements 00 000 93 65 Chapter 5 66 Prepare to Use the DT8871U or DT8871 see Chapter 2 starting on page 27 Set Up and Install the DT8871U or DT8871 see Chapter 3 starting on page 37 Wire Signals see Chapter 4 starting on page 51 Verify the Operation of the DT8871U or DT8871 this chapter You can verify the operation of the DT8871U or DT8871 temperature instrument using the instrument s web interface You can configure measure and control the DT8871U or DT8871 instrument either locally or remotely using this interface You can also use the provided TEMPpoint application developed in Measure Foundry for more complex data analysis This chapter focuses on verifying your instrument using the web interface refer to Appendix C starting on page 149 for information on using the TEMPpoint application with the DT8871U or DT8871 Verifying the Operation of the
27. 13 STP37 Screw Terminal Panel Digital Output 7 Digital Output 7 Digital Output 6 Digital Output 6 Digital Output 5 Digital Output 5 Digital Output 4 Digital Output 4 Digital Output 3 Digital Output 3 Digital Output 2 Digital Output 2 Digital Output 1 Digital Output 1 Digital Output 0 Digital Output 0 Wiring Signals Connecting Digital Input Signals Figure 14 shows how to connect digital input signals lines 0 and 1 in this case to the digital I O connector on the DT8871U or DT8871 temperature instrument A 5 V TEMPpoint Digital I O Connector 1 kQ pin 1 DIN 0 TTL Outputs pn2 Ni L 7 in 20 B e DIN 0 pin21 P DIN 1 1 KQ pull up to 5 V required for TTL outputs Figure 14 Connecting Digital Inputs 63 Chapter 4 Connecting Digital Output Signals The digital output lines of the DT8871U and DT8871 instruments act as a solid state relay The customer supplied signal can be 30 V at up to 400 mA peak AC or DC You can use the digital output lines of the instrument to control solid state or mechanical relays or high current electric motors Figure 15 shows how to connect digital output signals to line 0 of the DT8871U or DT8871 to control a motor relay TEMPpoint Digital Motor 1 0 Connector di O Relay Controlled by ve M Software Fuse pin 10 Digital Out
28. 62 V Chi Ch2 22 65 C 20 57 C Open 0 62 V 0 62 V Figure 27 Channel Overview Screen of the TEMPpoint Application 153 Appendix C Changing the Configuration of Your TEMPpoint Instrument To change the configuration of your TEMPpoint instrument follow these steps 1 Stop acquisition by clicking Stop Acquisition from the Acquisition menu or by clicking Start Stop from the main window 2 Click the Configuration menu and then click Change Configuration The Change Configuration screen is displayed TEMPpoint Change Configuration Acquisition Unit Log Channels to Disk Acquisition Frequency Sensor Type Channel Y gi 1 Every 2 Seconds Type J v 2 Every 5 Seconds Type J v 3 Every 10 Seconds Type J Every Minute 4 Type J Every 2 Minutes Every 5 Minutes Set allto Volts NRE 154 Using the TEMPpoint Application Under Unit select the temperature units in which to display temperature data C Celsius F Fahrenheit or K Kelvin Under Sensor Type select the input type Volts J K B E N R S or T for each of the channels Notes If you want to set all the channels to the same configuration at once select the configuration to apply using the Set all to combo box If you select a sensor type of Volts for a channel the data is displayed in voltage The sensor type setting is ignored for the digital input port Under Log Cha
29. 7 Voltage Measurement Specifications 138 Digital I O Specifications ssu assanar rrenan 140 Power Physical and Environmental Specifications 141 Regulatory Specifications 0 06 cece eee eee 142 Thermocouple Connector Specifications 143 Ethernet RJ45 Connector Specifications 144 Appendix B Connector Pin Assignments 147 Contents Appendix C Using the TEMPpoint Application 149 OVELVIEW o odutee ie sem e dedero rtr RE eru ethane 150 Running the TEMPpoint Application 151 Changing the Configuration of Your TEMPpoint Instrument 154 Defining Alarm Limits lceseeeeeeeeeeeeee 157 Logging Data to Disk 00 0000 160 Viewing a Data File 2 nnn eee 163 Reading Digital Input Values 00004 164 Exiting from the TEMPpoint Application 165 Appendix D Configuring Network Settings on Your PC 167 Configuring the PC to Use Auto IP 0048 168 Specifying a Static IP Address for your Instrument 172 Reconfiguring the PC to Use a Static IP Address 174 Contents 10 About this Manual TEMPpoint is a family of temperature measurement instruments that includes the DT9871U DT9871 DT8871U DT8871 DT9872 and DT8872 The DT8871U and DT8871 are Ethernet LXI LAN eXtensions for Instrumentation instruments capable of mea
30. 8871U or DT8871 describes how to unpack the instrument check the system requirements install the TEMPpoint software and view the TEMPpoint documentation online Chapter 3 Setting Up and Installing the DT8871U or DT8871 describes how to apply power to the DT8871U or DT8871 and connect the instrument to the network Chapter 4 Wiring Signals describes how to wire signals to the DT8871U and DT8871 instruments Chapter 5 Verifying the Operation of the DT8871U or DT8871 describes how to verify the operation of the DT8871U and DT8871 instruments with the instrument s web interface Chapter 6 Principles of Operation describes all of the features of the DT8871U and DT8871 instruments in detail Chapter 7 Troubleshooting provides information that you can use to resolve problems with the DT8871U and DT8871 temperature instruments should they occur About this Manual Appendix A Specifications lists the specifications of the DT8871U and DT8871 Appendix B Connector Pin Assignments describes the pin assignments of the digital I O connector on the DT8871U and DT8871 temperature instruments e Appendix C Using the TEMPpoint Application describes how to use the TEMPpoint application with the DT8871U and DT8871 Appendix D Configuring Network Settings on Your PC describes how to configure the network settings of your PC to use Auto IP or a static IP address Anindex completes
31. AN 39 Connecting to a Site LAN esses 39 Connecting to a Private LAN 0 0 e eee eee 41 Contents Connecting Using a Hub or Switch 41 Connecting Directly to a Computer 42 Applying Power isses ert x th ere RE RR ERA ede aen 44 Getting an IP Address and Host Name 0 46 Determining Ethernet Activity llsseeeeeeee 48 Resetting the Instrument 6 cece eee eee 50 Chapter 4 Wiring Signals ssesless 51 Preparing to Wire Signals 00000000 53 Wiring Recommendations 6 60 cece eee 93 Warm Up TIME e rte quete rente kt e METRE ERA Wn 53 Signal Connections ee ei E a e T e 54 Connecting Thermocouple Inputs 60000 eee 55 Connecting Voltage Inputs n nuas us nanan r nnne 58 Connecting Current Loop Inputs eee 59 Connecting Digital I O Signals 66 00 eee eee 61 Connecting Digital Input Signals 66 63 Connecting Digital Output Signals 64 Chapter 5 Verifying the Operation ofthe DT8871U or DT6871 1 2 2252 9n RIRs 65 Before Using the Web Interface 00 000000 67 Java Requirements sseseeeseeeeeeee 67 Internet Explorer Browser Settings 06 68 JavaScript sed sida ea heu eee ER E EI 68 Security Levels todas ba detinet 69 Internet Zoner daiire ari 69
32. CSDP C Device Project file amp flCSPROJ Ci Project file CSS Cascading Style Sheet Document L CSV Microsoft Office Excel Comma Separated Value CTL LabVIEW Control Rrrr ey OT TA M b Details for CSV extension Opens with EE Microsoft Office Excel Files with extension CSV are of type Microsoft Office Excel Comma Separated Values File To change settings that affect all Microsoft Office Excel Comma Separated Values File files click 7 Click OK Now when you click Download on the Download Measurements web page you should see a dialog box asking if you want to Open or Save the data in the appropriate application 74 Verifying the Operation of the DT8871U or DT8871 Locating Your Instrument on the LAN To access the web interface of your instrument you must determine its IP address on your TCP IP network Note Discovery will work only for devices on the same subnet We recommend that you run Data Translation s Eureka Discovery Utility that is provided with the TEMPpoint software to locate your TEMPpoint instrument quickly Alternatively you can use other LXI discovery tools such as Agilent Connection Expert if you have them installed on your computer Or you can check your router s address assignments or locate the instrument s MAC Ethernet hardware address in your DHCP server log To use the Eureka Discovery Utility perform the following steps 1 From the W
33. DATA TRANSLATION UM 22967 E DT8871U and DT8871 Te MFpernt Temperature Instruments for LXI User s Manual Fifth Edition January 2009 Data Translation Inc 100 Locke Drive Marlboro MA 01752 1192 800 525 8528 www datatranslation com Fax 508 481 8620 E mail info datx com Copyright O 2008 2009 by Data Translation Inc All rights reserved Information furnished by Data Translation Inc is believed to be accurate and reliable however no responsibility is assumed by Data Translation Inc 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 rights of Data Translation Inc Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer software clause at 48 C F R 252 227 7013 or in subparagraph c 2 of the Commercial computer Software Registered Rights clause at 48 C F R 52 227 19 as applicable Data Translation Inc 100 Locke Drive Marlboro MA 01752 Data Translation 9 is a registered trademark of Data Translation Inc TEMPpoint is a trademark of Data Translation Inc All other brand and product names are trademarks or registered trademarks of their respective companies Radio and Television Interference This equipment has been tested and found to com
34. DT8871U or DT8871 Before Using the Web Interface This section describes system requirements and browser settings for proper operation of the instrument s web interface Note Atany instant up to 8 clients can access the TEMPpoint instruments concurrently using the web interface Up to 12 additional clients can access the TEMPpoint instruments concurrently using SCPI commands over VISA or sockets Of these 4 can be VXI 11 clients which use the SOCKETS or VISA INSTR resource to access the instrument At this time the web and SCPI interfaces cannot be locked therefore one client can change the configuration of the instrument that another client is accessing However you can optionally lock the VXI 11 interface using the VISA APIs viLock viUnlock this prevents other VXI 11 clients including VXI 11 discovery from accessing the instrument Refer to the SCPI documentation for your instrument for more information on supported SCPI commands Java Requirements Before using the instrument web interface ensure that your computer has Version 6 Update 5 or greater of Java installed this version of Java installs version 1 6 of the Java plug in To download or upgrade Java go to www java com To verify that you have version 1 6 of the Java plug in installed do the following 1 Launch version 6 0 or 7 0 of Internet Explorer 67 Chapter 5 2 From the Internet Explorer browser select Tools gt Sun Java C
35. LAN is useful in applications that require access by many users or access by users at distributed sites In this connection scheme a DHCP Dynamic Host Configuration Protocol server is used to assign an IP address to the TEMPpoint instrument Figure 2 shows a typical site LAN connections using a dedicated Ethernet hub switch or router Figure 3 shows typical site LAN connections without using a dedicated Ethernet hub switch or router Note Use standard LAN cables for network connections The TEMPpoint instrument ships with a standard LAN cable EP372 for connecting to the LAN RJ45 connector on the rear panel of the TEMPpoint instrument 39 Chapter 3 Computer Ethernet Hub Switch Router Tosite CAN Ja n i La jur i TEMPpoint TEMPpoint TEMPpoint TEMPpoint 5 V Power 5 V Power 5 V Power 5 V Power Supply Supply Supply Supply Figure 2 Typical Site LAN Connections using a Hub Switch or Router To Site LAN Computer To Site LAN TEMPpoint 5 V Power Supply Figure 3 Typical Site LAN Connections Without Using a Hub Switch or Router 40 Setting Up and Installing the DT8871U or DT8871 Connecting to a Private LAN A private LAN or subnet generally involves the direct connection of the instruments to the computer and may include Ethernet hubs or switches Access to the instruments is l
36. Text and Images 36 Z Setting Up and Installing the DT8871U or DT8871 Connecting the DT8871U or DT8871 to the LAN 39 Getting an IP Address and Host Name suuuusueu 46 Determining Ethernet Achivity eec pecie necesse nernkese pess 48 Resetting the Instrument cosirer iocis inrer inris e 50 37 Chapter 3 Prepare to Use the DT8871U or DT8871 see Chapter 2 starting on page 27 Set Up and Install the DT8871U or DT8871 this chapter Wire Signals see Chapter 4 starting on page 51 Verify the Operation of the DT8871U or DT8871 see Chapter 5 starting on page 65 E Note Your DT8871U and DT8871 temperature instruments are factory calibrated Thereafter yearly recalibration is recommended Refer to page 107 for more information on calibration 38 Setting Up and Installing the DT8871U or DT8871 Connecting the DT8871U or DT8871 to the LAN This section describes how to connect the DT8871U or DT8871 temperature instrument to the LAN Local Area Network Two connection schemes are shown Site LAN connections described on this page Private LAN connections described on page 41 Note It is recommended that you consult with your network administrator to ensure that all network security performance and reliability issues are considered when using connecting TEMPpoint instruments to the LAN Connecting to a Site LAN A site
37. U and DT8871 click Programs gt Data Translation Inc gt Hardware Documentation gt DT8871 User s Manual For documentation on the DtxTempPoint IVI COM driver click Programs gt IVI gt DtxTempPoint gt Documentation For documentation on the Eureka Discovery Utility click Programs gt Data Translation Inc gt Instrument Support gt Eureka LXI Instrument Discovery For documentation about SCPI support for TEMPpoint click Programs gt Data Translation Inc gt TEMPpoint SCPI Support For documentation about Measure Foundry click Programs gt Data Translation Inc gt Measure Foundry gt 5 1 The following may be helpful when using Adobe Reader To navigate to a specific section of the document click a heading from the table of contents on the left side of the document Within the document click the text shown in blue to jump to the appropriate reference the pointer changes from a hand to an index finger 35 Chapter 2 To go back to the page from which the jump was made click the right mouse button and Go Back or from the main menu click Document and then Go Back To increase or decrease the size of the displayed document from the main menu click View and then Zoom By default Adobe Reader smooths text and monochrome images sometimes resulting in blurry images If you wish you can turn smoothing off by clicking File and then Preferences General and unchecking Smooth
38. also click the Discard changes button before you save to return to the previous configuration if desired 87 Chapter 5 Digital Output Configuration Use the Configuration gt Digital Out web page to configure the digital output lines of your TEMPpoint instrument DATATRANSLATION MPpeent LXI Digital Output Configuration Home LAN Channel Scan rate Filter 1 LED1 Limits Digital In Digital Out Measurement amp control 4 Channel Digital Input Digital Output 6 File Download Measurements Help Topics Technical Support To change your digital output configuration do the following 1 Under Label type text in the fields for each channel if you want to describe the channel 2 Click Save configuration to apply your changes If you do not save before leaving this page your changes are lost You can also click the Discard changes button before you save to return to the previous configuration if desired 88 Verifying the Operation of the DT8871U or DT8871 Measuring Data and Controlling the Instrument Use the Control web pages start or stop data acquisition on the sensor channels or to update the value of the digital output line Starting and Stopping a Scan To start or stop a scan use the Measurement amp control gt Channel web page DATATRANSLATION MPpeent LXI DT8871 48 Home Scan Control Configuration
39. an rate configuration the actual scan rate is shown 2 Click Save configuration to apply your changes If you do not save before leaving this page your changes are lost You can also click the Discard changes button before you save to return to the previous configuration if desired Filter Configuration Use the Configuration gt Filter web page to configure the filter type used by the instrument DATATRANSLATION MPpeent LXT DIS Filter Configuration Home Configuration Save configuration Discard changes Help LAN Filter type Channel Raw ati Scan rate Filter Limits Digital In Digital Out You can choose one of the following filter types e Raw No filter Provides fast response times but the data may be difficult to interpret Use when you want to filter the data yourself 83 Chapter 5 84 The Raw filter type returns the data exactly as it comes out of the Delta Sigma A D converters Note that Delta Sigma converters provide substantial digital filtering above the Nyquist frequency Generally the only time it is desirable to use the Raw filter setting is if you are using fast responding thermocouples sampling them at higher speeds 1 Hz and need as much response speed as possible Moving average The default filter setting for the DT8871U Provides a compromise of filter functionality and response time This filter can be used in any application This low pass filter ta
40. are No prerequisite software is required if you are using a single client to access the TEMPpoint instrument on the LXI bus or if you are managing how multiple clients concurrently access a TEMPpoint instrument on the LXI bus In these case your application can use sockets to communicate with the TEMPpoint instrument If however you want multiple clients to access the TEMPpoint instrument on the LXI bus and you want to lock access to the instrument so that one client cannot change the configuration of the instrument that another client is accessing you need to install VISA we recommend either Agilent VISA or NI VISA from National Instruments You can then use the VISA methods viLock viUnlock to prevent other clients from accessing the instrument To install Agilent VISA do the following 1 Goto www agilent com enter IO Libraries Suite in the search field and select Agilent IO Libraries Suite 15 0 from the search results 2 Follow the instructions on Agilent s web site to download and install the Agilent IO Libraries which include VISA support VISA COM support and the Agilent Connection Expert tool We recommend that you run Data Translation s Eureka Discovery Utility that is provided with the TEMPpoint software to locate your TEMPpoint LXI instrument on the network see page 75 for more information 31 Chapter 2 Installing the IVI COM Driver TEMPpoint Application and Eureka Discovery Utility The TEMPp
41. ata Format DT8871U and DT8871 instruments return data as 32 bit floating point values If you specify a thermocouple type of None voltage a voltage value in the range of 0 075 V for the DT8871U and 1 25 V for the DT8871 is returned For all other thermocouple types a temperature value in degrees C or one of the error constants described on page 113 is returned In normal operation one floating point value is returned for each enabled channel including the digital input port If you enable the capability of returning CJC data in the data stream described on page 105 two floating point values are returned in the data stream for each enabled analog input channel The first value in the pair represents the temperature or voltage of the channel the second value in the pair represents the CJC temperature in degrees C for that channel Error Conditions The DT8871U and DT8871 instruments report any overrun errors by sending an overrun event to the application program If this error condition occurs the instrument stops acquiring and transferring data to the host computer To avoid this error try one or more of the following Reduce the sample rate Close any other applications that are running Runthe program on a faster computer 113 Chapter 6 114 Additionally the following constants may be reported to the host e 99999 0 SENSOR IS OPEN described on page 105 e 88888 0 TEMP OUT OF RANGE HIGH des
42. ated digital output lines The outputs are solid state relays that operate at 30 V and 400 mA peak AC or DC Switching time is 2 ms maximum Figure 21 shows the digital output circuitry 116 Principles of Operation 1 of 8 Solid State Relays Figure 21 Digital Output Circuitry Digital outputs resemble a switch the switch is closed if the state of the digital output line is 1 and the switch is open if the state of the digital output line is 0 On power up or reset the digital outputs are disabled Channel to Channel Isolation The DT8871U and DT8871 instruments include channel to channel 6 isolation of up to 250 V between digital I O lines If you require greater channel to channel isolation use every other digital line This reduces the number of digital I O lines but provides channel to channel isolation of 500 V one channel can be 250 V while the adjacent channel can be 250 V Resolution The DT8871U and DT8871 instruments provide a resolution of 8 bits for the digital input port to accommodate the 8 digital input lines and a resolution of 8 bits for the digital output port to accommodate the 8 digital output lines These lines are organized as isolated dedicated ports You cannot configure port resolution through software 117 Chapter 6 Operation Modes Using software you can read from a single digital input line or the entire digital input port or write to a single digital output line or the
43. ch channel on a separate band click the Single Band Multiple Band button so that the button indicator turns gray To begin recording data click the Start Recording button You are prompted to name the file in which to store the recorded data Note The data file has an hpf extension and is saved in the following directory on your hard disk NDocuments and Settings V All Users Application Data Measure FoundryNExamples N Ready to Measure Applications Enter a name for the data file and then click Save The data for each channel is then displayed on the screen and logged to disk 161 Appendix C gt TEMPpoint Chart Recorder t E3IE 2g amp eH gt Channel Visibility Sampling every 2 seconds 5 Hz Time Axis Length 1 Minute ir 1 2 26 5 26 0 25 5 25 0 24 5 24 0 23 5 v All Visible All Invisible T a OS U Single Band Multiple Bands i lt JL lt J t JJ 16 02 10 16 02 20 16 02 30 16 02 40 16 02 50 16 03 00 Open Last Recording in Excel R Stop Recording X t s 1 1 FC 2 270 9 When you have finished recording click the Stop Recording button 10 If you want to view this data in Microsoft Excel click the button called Open Last Recording in Excel Note The Chart Recorder has other features such as scrolling autoscaling printing and so on Refer to the online help provided with the TEMPpoint application for more information on these features
44. ck your LAN configuration see the DT8871 does DT8871 instructions on page 79 not respond configuration is Check the IP address of the instrument by incorrect opening a Command Prompt window Start gt Programs gt Accessories gt Command Prompt and entering the command ipconfig all The IP settings of your instrument are returned Ping the instrument by opening a Command Prompt window Start gt Programs gt Accessories gt Command Prompt and entering the command ping address where address is the IP address of your instrument If a timeout message is returned the IP address is incorrect If a no host error message is returned the subnet mask is incorrect Refer to page 46 for more information on IP and subnet addresses If needed reset the instrument using the instructions on page 50 The DT8871U or Contact Data Translation for technical support DT8871 is refer to page 125 damaged 122 Troubleshooting Table 6 Troubleshooting Problems cont Symptom Possible Cause Possible Solution Intermittent Loose connections Check your wiring and tighten any loose operation or vibrations exist connections or cushion vibration sources see the instructions in Chapter 4 The DT8871U or Check environmental and ambient DT8871 is temperature consult the specifications on overheating page 141 of this manual and the documentation provided by your comp
45. connecting input signals 63 connecting output signals 64 controlling the outputs 91 input configuration 87 lines 115 116 operation modes 118 output configuration 88 reading the digital input port in the analog data stream 110 reading the inputs 92 resolution 117 subsystem specifications 140 discovery utility Eureka 19 31 75 DNS server 46 downloading measurements 93 E encoding data 113 ENet Activity LED 48 ENet Link LED 48 49 environmental specifications 141 EP333 cable assembly 22 61 EP372 LAN cable 41 error conditions 113 Ethernet activity 48 49 Ethernet cable 39 41 Ethernet crossover cable 42 Eureka Discovery Utility 19 31 installing 32 using 75 Excel 73 opening a data file 162 using to display data 95 F factory service 126 features 16 filtering 112 filters 83 floating point data 113 formatting data 113 frequency 108 Index G GMT 78 H hardware features 16 high drive digital outputs 64 host name 46 hub using with a private LAN 41 using with a site LAN 40 I input channels 102 CJC 105 configuration differential 55 ranges 106 resolution 107 installing the software 31 Eureka Discovery Utility 32 IVI COM driver 32 prerequisites 31 SCPI support 34 TEMPpoint application 32 instrument web interface 19 Internet Explorer browser settings 68 JavaScript 68 pop up blockers 72 security levels 69 Internet zone 69 Intranet zone 70 IP address 46 IVI COM driver 20 installing 32 J
46. cribed on page 106 e 88888 0 TEMP OUT OF RANGE LOW described on page 106 If any of these constants is reported the A D subsystem continues to acquire data the error condition is cleared when the data falls within range Principles of Operation Digital I O Features The DT8871U and DT8871 instruments provide 8 digital input lines and 8 digital output lines that you can use to control external equipment including solid state or mechanical relays This section describes the following digital I O features of the DT8871U and DT8871 temperature instruments Digital input lines described below Digital output lines described on page 116 e Channel to channel isolation described on page 117 Resolution described on page 117 Operation modes described on page 118 Digital Input Lines The DT8871U and DT8871 temperature instruments feature eight isolated digital input lines Digital inputs operate from 3 to 28 V DC with a switching time of 6 2 ms maximum Figure 20 shows the digital input circuitry a 2 2 kQ resistor is used in series with the LED in the opto isolator input 115 Chapter 6 2 2K Digital Input 7 1 of 8 Opto Isolators Figure 20 Digital Input Circuitry A digital line is high switch is closed if its value is 1 a digital line is low switch is open if its value is 0 Digital Output Lines The DT8871U and DT8871 temperature instruments feature eight latched and isol
47. ed If your TEMPpoint instrument is not included in the list of Available TEMPpoint instruments but you want to manually connect to it do the following a Click Advanced The following screen is displayed gt Advanced Enter the VISA Connect and Option Strings in the fields below VISA Connect String TCPIP 169 254 68 75 SOCKET Set VISA Option String Ea Cancel Continue Using the TEMPpoint Application b Determine the IP address of your instrument on the TCP IP network using an LXI discovery tool such as the Eureka Discovery Utility provided with your TEMPpoint instrument see page 75 for information on using this utility c Enterthe VISA Connect String for your device such as TCPIP 192 43 218 69 INSTR or TCPIP 192 43 218 44 SOCKET and click Set d Ifyou want to simulate the operation of a device enter the string simulate true model DTxxxx in the VISA Option String text box and click Set where xxxx equals 9871 for a DT9871 9872 for a DT8872 8871 for a DT8871 or 8872 for a DT8872 instrument 6 Click Continue The latest state is saved and used when the application is next run and the Channel Overview screen of the TEMPpoint application is displayed Note that data acquisition is started automatically and temperature values are displayed in degrees C by default WJ TEMPpoint Channel Overview Chi 0 62 V 0 62 V 0 63 V 0 63 V 0 62 V Chid Ch13 0 61 V 22 58 C 0 62 V 0 63 V 0
48. el of that zone to Medium high or lower The following section describe how to configure each zone Internet Zone To configure the security level of the TEMPpoint instrument s IP address in the Internet zone perform the following steps 1 From the Internet Explorer browser select Tools gt Internet Options 2 Click the Security tab 69 Chapter 5 Internet Options General Security Privacy Content Connections Programs Advanced Select a Web content zone to specify its security settings Intemet Localintranet Trusted stes Restricted sites Internet A This zone contains all Web sites you havent placed in other zones Security level for this zone Move the slider to set the security level for this zone gers Safe browsing and still functional Prompts before downloading potentially unsafe content Unsigned ActiveX controls will not be downloaded Appropriate for most Intemet sites 3 Select Internet click Default Level and move the slide bar to select a security level of Medium high or lower 4 Click OK Local Intranet Zone To add the TEMPpoint IP address to the Local intranet zone and configure its security level do the following 1 From the Internet Explorer browser select Tools gt Internet Options 2 Click the Security tab 3 Click Local intranet and click Sites 4 Select which web sites to add to the zone and then click Advanced 70 Veri
49. ernet Explorer browser select Tools gt Pop up Blocker b Select Turn Off Pop up Blocker 72 Verifying the Operation of the DT8871U or DT8871 Associating CSV Files with Microsoft Excelor Notepad If files with the CSV extension do not have the proper file associations actions set up then clicking Download in the Download Measurements page of the instrument web interface will not present the option of saving the data to a file or loading the data to an application such as Microsoft Excel or Microsoft Notepad that can display it Instead the data will be displayed in the browser To associate a CSV file with Microsoft Excel or Notepad perform the following steps 1 From the Windows Control Panel open the Folder Options dialog and select File Types 2 Scroll down to the CSV entry and select it If it is not in the list add it as a new file type by selecting New and entering CSV Click Advanced to access the Edit File Type dialog box 5 Click New to access the New Action dialog box Enter Open in the Action edit field gv opt abe Uu Click Browse and find Excel exe typically located in C Program Files M Microsoft OfficeNOFFICExxNEXCEL EXE or Notepad exe typically located in C Windows Notepad exe on your system and then click OK 73 Chapter 5 Folder Options General View File Types Offline Files Registered file types Extensions file Types cs CH Source file GE
50. ersion is an ultra quiet version of the DT8871 the DT8871 offers the same features as the DT8871U but has different A D noise and input range specifications Table 1 DT8871U and DT8871 Models Number of Analog Models Input Channels A D Noise A D Input Range DT8871U 8 8 DT8871U 16 16 DT8871U 24 24 0 25 uV RMS 30 075 V DT8871U 32 32 DT8871U 40 40 DT8871U 48 48 DT8871 8 8 DT8871 16 16 DT8871 24 24 5 uV RMS 1 25 V DT8871 32 32 DT8871 40 40 DT8871 48 48 a The A D noise specification is based on the raw none software filter Overview The key hardware features of the DT8871U and DT8871 temperature instruments are as follows Analog input subsystem Configurable analog input channels for thermocouple or differential voltage inputs easy access jacks for each channel for quick wiring One CJC cold junction compensation input for each thermocouple channel One 24 bit Delta Sigma A D converter per channel for simultaneous high resolution measurements B E J K N R S and T thermocouple types supported the instrument automatically linearizes the measurements and returns the data as a 32 bit floating point temperature values 500 V galvanic isolation channel to channel and to the host computer to protect signal integrity 100 nA break detection circuitry to detect open thermocouple inputs Throughput rate of up to 10 Sample
51. escribed in Chapter 5 allows you to verify the operation of your TEMPpoint instrument and perform basic functions with Internet Explorer and no additional software Using it you can configure your instrument control output signals measure input signals and save results to disk TEMPpoint application This application developed using Measure Foundry lets you do the following Configure your TEMPpoint instrument Acquire temperature and voltage data from up to 48 analog input channels Display acquired temperature and voltage data during acquisition Set alarm limits for each channel Update the value of the digital output lines based on alarm conditions Use a chart recorder to display data over time and log it to an hpf file for later analysis Open the last recorded hpf data file in Microsoft Excel View any hpf data file in a file viewer 19 Chapter 1 20 You can customize this application to suit your needs using Measure Foundry Professional with the Instrument Pak the source code for this application is included with TEMPpoint Measure Foundry An evaluation version of this software is available for developing applications for TEMPpoint instruments Measure Foundry is a rapid application development package that provides a system solution for all types of measurement instruments Using Measure Foundry you can develop complex test and measurement applications easily without writing code Simply drag a
52. formation in Table 6 to isolate and solve the problem If you cannot identify the problem refer to page 125 Troubleshooting Table 6 Troubleshooting Problems Symptom Possible Cause Possible Solution DT8871U or The DT8871U or Ensure that your DT8871U or DT8871 is DT8871 is not DT8871 cannot properly connected see the instructions in found communicate with Chapter 3 the netwark If your PC has a static IP address reconfigure it for Auto IP using the instructions on page 168 Check your LAN configuration see the instructions on page 79 Check the IP address of the instrument by opening a Command Prompt window Start gt Programs gt Accessories gt Command Prompt and entering the command ipconfig all The IP settings of your instrument are returned Ping the instrument by opening a Command Prompt window Start gt Programs gt Accessories gt Command Prompt and entering the command ping address where address is the IP address of your instrument If a timeout message is returned the IP address is incorrect If a no host error message is returned the subnet mask is incorrect Refer to page 46 for more information on IP and subnet addresses If needed reset the instrument using the instructions on page 50 121 Chapter 7 Table 6 Troubleshooting Problems cont Symptom Possible Cause Possible Solution DT8871U or The DT8871U or Che
53. fying the Operation of the DT8871U or DT8871 5 Enter the IP address of the TEMPpoint instrument to the zone and click Add Local intranet PR You can add and remove Web sites from this zone All Web sites in this zone will use the zone s security settings Require server verification https for all sites in this zone Loc Jem 6 Click OK 7 Click Default Level and move the slide bar to select a security level of Medium high or lower 8 Click OK Trusted Sites Zone To add the TEMPpoint IP address to the Trusted sites zone and configure its security level do the following 1 From the Internet Explorer browser select Tools gt Internet Options 2 Click the Security tab 3 Click Trusted sites and click Sites 4 Enter the IP address of the TEMPpoint instrument to the zone note that the address must be prefaced by https and click Add 71 Chapter 5 Trusted sites You can add and remove Web sites from this zone All Web sites in this zone will use the zone s security settings Add this Web site to the zone https 192 43 218 69 Web sites Require server verification https for all sites in this zone Lo jJ e J 5 Click OK 6 Click Default Level and move the slide bar to select a security level of Medium high or lower 7 Click OK Pop up Blockers To disable pop up blockers perform the following steps a From the Int
54. gram of the DT8871 Temperature Instrument 101 Chapter 6 Analog Input Features This section describes the following features of the analog input A D subsystem on the DT8871U and DT8871 temperature instruments Analog input channels described below Cold junction compensation described on page 105 Open thermocouple detection described on page 105 Input ranges and out of range data described on page 106 Resolution described on page 107 Calibration described on page 107 Sample clock source described on page 108 Conversion modes described on page 109 Filtering described on page 112 Data format described on page 113 Error conditions described on page 113 Analog Input Channels The number of analog input channels that are available depends on the instrument model that you purchased as shown in Table 3 102 Principles of Operation Table 3 Number of Analog Input Channels Number of Models Analog Input Channels DT8871U 8 or DT8871 8 8 numbered 0 to 7 DT8871U 16 or DT8871 16 16 numbered 0 to 15 DT8871U 24 or DT8871 24 24 numbered 0 to 23 DT8871U 32 or DT8871 32 32 numbered 0 to 31 DT8871U 40 or DT8871 40 40 numbered 0 to 39 DT8871U 48 or DT8871 48 48 numbered 0 to 47 You can attach a voltage input or any of the following thermocouple types to these channels in a mix and match fashion B E J K N R S and or T By default all channels are configu
55. grams and documentation perform the following steps 1 Ifyou have not already done so perform the following steps a Insert the TEMPpoint CD into your CD ROM or DVD drive The installation program should automatically start and the TEMPpoint installation program should appear b Ifthe installation program does not automatically start double click Setup exe from the CD The TEMPpoint installation program appears c Click Install from Web or Install from CD 2 If you are installing from the web click TEMPpoint SCPI Support and follow the prompts to install the example programs and documentation 3 Ifyouare installing from the TEMPpoint CD perform these steps a Click Install Additional Software b Click TEMPpoint SCPI Support c Click Install Selected Features and follow the prompts to install the example programs and documentation d When you are finished with the TEMPpoint CD click Quit Installer 34 Preparing to Use the DT8871U or DT8871 Viewing the Documentation Note To view the documentation you must have Adobe Reader 5 0 or greater installed on your system Adobe Reader is provided on the TEMPpoint CD If you install Adobe Reader from this CD make sure that you open Adobe Reader and accept the license agreement before viewing the documentation You can access the documentation for your TEMPpoint instrument from the Windows Start menu as follows For documentation about the DT8871
56. hermocouple type at several temperature points over the dynamic range of the instrument 129 Appendix A Table 9 Calculated Thermocouple Accuracy of the DT8871U Thermocouple Type Input Temp J K T E S R B N 100 C 0 17 C 0 17 C 0 16 C 0 16 C 0 16 C 0 C 0 15 C 0 16 C 0 16 C 0 15 C 0 2 C 0 2 C 0 16 C 100 C 0 18 C 0 15 C 0 16 C 0 15 C 0 18 C 0 18 C 0 15 C 300 C 0 15 C 0 17 C 0 16 C 0 15 C 0 18 C 0 18 C 0 23 C 0 15 C 500 C 0 15 C 0 15 C 0 15 C 0 18 C 0 17 C 0 21 C 0 15 C 700 C 0 15 C 0 15 C 0 16 C 0 18 C 0 18 C 0 17 C 0 16 C 900 C 0 15 C 0 17 C 0 17 C 0 18 C 0 18 C 0 19 C 0 16 C 1100 C 0 15 C 0 16 C 0 19 C 0 18 C 0 18 C 0 16 C 1400 C 0 18 C 0 18 C 0 17 C a Conditions for accuracy measurements Warm up time of 30 minutes Inclusive of typical 0 15 C CJC error maximum CJC error is 0 25 C Inclusive of typical 0 25 uV offset error maximum offset error is 2 5 uV Exclusive of thermocouple errors Exclusive of noise see Figure 22 and Fig
57. hermocouples are detected The Open OPN LED on the rear panel lights when this condition occurs see Figure 8 on page 48 for the location of this LED In addition the software returns the value SENSOR IS OPEN 99999 decimal for any channel that was configured for a thermocouple input and has either an open thermocouple or no thermocouple connected to it This value is returned anytime a voltage greater than 100 mV is measure on the input since this value is greater than any legitimate thermocouple voltage 105 Chapter 6 106 If the channel is configured for a voltage input not a thermocouple type the Open OPN LED never lights and the SENSOR I5 OPEN value is not returned Instead the voltage value is returned If no input is connected to the channel the software returns a value of approximately 0 7 V due to the open thermocouple detection pull up circuit Input Ranges and Out of Range Data The DT8871U instrument provides an input range of 0 075 V while the DT8871 instrument provides an input range of 1 2500 V Each thermocouple type has an allowable voltage range If a voltage is measured on the input that is outside of the legal range for the selected thermocouple type the channel may be configured for the wrong type of thermocouple or something other than a thermocouple may be connected to the channel For channels configured with a thermocouple type of None voltage the Limit LMT LED on the rear panel
58. hown in Table 5 Table 5 Supported Channels for Continuous Operations Analog Input Channel for Reading Models Channels the Digital Input Port DT8871U 8 or DT8871 8 0 to 7 8 DT8871U 16 or DT8871 16 Oto 15 16 DT8871U 24 or DT8871 24 0 to 23 24 DT8871U 32 or DT8871 32 0 to 31 32 DT8871U 40 or DT8871 40 0 to 39 40 DT8871U 48 or DT8871 48 0 to 47 48 The channels are read in order from the lowest channel number to the highest channel number in the list of enabled channels this process is known as a scan Principles of Operation How Continuous Scan Works When you issue a command to start the scan the TEMPpoint instrument simultaneously samples all the analog input channels CJC inputs and the digital input port and converts the analog inputs to temperature or voltage based on the thermocouple type If the channel is enabled the sampled data is placed in the FIFO on the instrument On the DT8871U and DT8871 the FIFO is used as a circular buffer Acquisition continues indefinitely until you stop the operation When the FIFO is full the operation wraps to the beginning of the FIFO values are overwritten starting at the first location in the FIFO It is up to your application to retrieve the data from the FIFO refer to your software documentation for more information The conversion rate is determined by the frequency of the input sample clock refer to page 108 for more information about
59. iate orientation Table 6 lists the color designations for the and polarities of the supported thermocouple types for both the ANSI American and IEC International standards Table 6 Thermocouple Color Designation Standards Thermocouple Thermocouple Wire Color Coding Wire Color Coding Standard Type Polarity Polarity ANSI Type J White Red Type K Yellow Red Type T Blue Red Type E Violet Red Type S Black Red Type R Black Red Type B Gray Red Type N Orange Red 55 Chapter 4 56 Table 6 Thermocouple Color Designation Standards cont Thermocouple Thermocouple Wire Color Coding Wire Color Coding Standard Type Polarity Polarity IEC Type J Black White Type K Green White Type T Brown White Type E Violet White Type S Orange White Type R Orange White Type B Gray White Type N Pink White For more information on thermocouple standards refer to the following web site http www omega com thermocouples html Figure 9 shows how to connect a thermocouple input to channel 0 of the DT8871U or DT8871 temperature instrument Wiring Signals Cho DT8871 Omega Cu Cu Plug SMPW U M M Thermocouple Input Figure 9 Connecting Thermocouple Inputs 57 Chapter 4 Connecting Voltage Inputs Figure 10 show
60. ibration procedure including warm up times for each TEMPpoint model The TEMPpoint Calibration Utility allows you to revert to the factory calibration for any or all channels or revert back to the last user calibration values if desired In addition this utility generates a report that lists the starting and ending calibration values for each channel allowing traceability Refer to the Data Translation web site www datatranslation com for information about selecting the right software package for your needs 21 Chapter 1 22 Accessories The following optional accessories are available for the DT8871U and DT8871 instruments e STP37 screw terminal panel The STP37 permits easy screw terminal connections for accessing the digital I O signals of the TEMPpoint instrument e EP333 cable The EP333 is a 2 meter shielded cable with two 37 pin connectors that connects the STP37 screw terminal panel to the digital I O connector of the TEMPpoint instrument e Rack mount kits To rack mount a single TEMPpoint instrument order a single rack mount kit Data Translation part number 22927 To rack mount two TEMPpoint instruments side by side order a dual rack mount kit Data Translation part number 22735 Overview Getting Started Procedure The flow diagram shown in Figure 1 illustrates the steps needed to get started using the DT8871U or DT8871 temperature instrument This diagram is repeated in each Gett
61. ibutor 124 Troubleshooting Technical Support If you have difficulty using a DT8871U or DT8871 temperature instrument Data Translation s Technical Support Department is available to provide technical assistance To request technical support go to our web site at http www datatranslation com and click on the Support link When requesting technical support be prepared to provide the following information Your product serial number e The hardware software product you need help on The version of the TEMPpoint CD you are using Your contract number if applicable If you are located outside the USA contact your local distributor see our web site www datatranslation com for the name and telephone number of your nearest distributor 125 Chapter 7 126 If Your DT8871U or DT8871 Needs Factory Service If your DT8871U or DT8871 temperature instrument must be returned to Data Translation do the following 1 Record the instrument s serial number and then contact the Customer Service Department at 508 481 3700 ext 1323 if you are in the USA and obtain a Return Material Authorization RMA If you are located outside the USA call your local distributor for authorization and shipping instructions see our web site www datatranslation com for the name and telephone number of your nearest distributor All return shipments to Data Translation must be marked with the correct RMA number
62. ications Input voltage range no compensation DT8871U x 0 0750 V DT8871 1 2500 V A D converter resolution 24 bits Voltage resolution DT8871U 0 015 uV DT8871 0 3 uV Sample rate 10 Samples s Gain 1 Input impedance 5 MO typical Input common mode voltage xb00 V Common mode rejection 60 Hz and 50 Hz gt 150 dB Coupling DC System linearity 0 005 System gain error includes all noise sources gain 1 0 00075 FSR 1 part in 133 333 System zero error includes all noise sources gain 1 DT8871U DT8871 0 25 uV RMS no filter 5 uV RMS no filter System drift error Zero Gain 0 02 uV C typical 4 ppm C Specifications Table 14 Voltage Measurement Specifications cont Feature Specifications A D reference Drift Drift per year x8 ppm C maximum 100 ppm typical Full scale long term stability 100 ppm year typical zero is auto zeroed to 0 25 uV typical for the DT8871U and 5 uV typical for the DT8871 139 Appendix A Digital I O Specifications Table 15 lists the specifications for the digital input DIN and digital output DOUT subsystems on the D18871U and DT8871 temperature instruments Table 15 Digital I O Specifications Feature Specifications Number of digital I O lines 16 8 In 8 Out Number of ports 2 8 bit 1 In 1 Out Inputs Input type High
63. ies resistor to convert current to voltage For the DT8871U version 1 Q 0 075 A 0 075 V For the DT8871 version 1 Q 1 25 A 1 25 V Figure 11 Connecting Current Loop Inputs Wiring Signals Connecting Digital I O Signals To make digital I O connections easier you can use the optional STP37 screw terminal panel and EP333 cable with your TEMPpoint instrument Connect the STP37 to the digital I O connector of the TEMPpoint instrument as shown in Figure 12 TEMPpoint Instrument Back Panel EP333 Cable Assembly EE Digital I O Connector STP37 Figure 12 Connecting the DT8871 to the STP37 Figure 13 shows the layout of the STP37 screw terminal panel and lists the assignments of each screw terminal 61 Chapter 4 62 Digital Input 1 Digital Input 1 Digital Input 2 Digital Input 2 Digital Input 3 Digital Input 3 Digital Input 4 Digital Input 4 Digital Input 54 Digital Input 5 Digital Input 64 Digital Input 6 Digital Input 7 Digital Input 7 Not Connected Not Connected 21 22 23 24 25 26 27 28 TB2 TB4 Digital Input 0 Digital Input 0 N e H o uU ir e Not Connected Not Connected I Not Connected TB3 TB5 36 17 35 16 34 15 33 14 32 13 31 12 30 11 29 10 Figure
64. imited to users that are directly connected to the private LAN therefore security performance and reliably are generally better on a private LAN than on a site LAN In this connection scheme the DHCP Dynamic Host Configuration Protocol server is typically not available therefore Auto IP is used to assign an IP address to the TEMPpoint instrument Note If no DHCP server exists and your PC is set up to use a static IP address you must temporarily reconfigure your PC to use Auto IP as described on Appendix D starting on page 167 Connecting Using a Hub or Switch Figure 4 shows a typical connection scheme when connecting TEMPpoint instruments to a private LAN using a dedicated Ethernet hub or switch Note Use standard LAN cables for network connections The TEMPpoint instrument ships with a standard LAN cable EP372 for connecting to the LAN RJ45 connector on the rear panel of the TEMPpoint instrument 41 Chapter 3 Computer Ethernet Hub Switch 42 Ci C Q TEMPpoint TEMPpoint 5 V Power 5 V Power 5 V Power 5 V Power Supply Supply Supply Supply Figure 4 Typical Private LAN Connections using a Hub or Switch Connecting Directly to a Computer Optionally you can connect the TEMPpoint instrument directly to your computer creating an ad hoc network as shown in Figure 5 Be aware that the time and date settings of the instrument will not be updated using this connection
65. indows Start menu click Programs gt Data Translation Inc gt Instrument Support gt Eureka LXI Instrument Discovery A screen similar to the one shown in Figure 16 appears 75 Chapter 5 4 Eureka lletourneauxp datx com 192 43 218 31 IP Manufacturer 192 43 218 111 Agilent Technologies 34411A 2 06 1 07 0 09 45 4 192 43 218 44 Data Translation DT8872 48 8169001 L5 192 43 218 41 Data Translation DT8871 24 8189005 15 11 DATA TRANSLATION www datatranslation com Figure 16 Eureka LXI Discovery Utility 2 Double click the appropriate IP address to open the web pages for your instrument using your default web browser Alternatively you can enter the IP address of your instrument directly in your Internet Explorer address bar to see the instrument s web interface The main web page shows information about your TEMPpoint instrument on the network 76 Verifying the Operation of the DT8871U or DT8871 DATATRANSLATION MPpernt LXI X X X _ DT8871 48 Home Home Configuration Turn ON front panel identification indicator Channel Manufacturer Data Translation Inc Erry Instrument model DT8871 48 Filter Firmware revision 1 5 1 0 Limits Serial number 08189005 Digital In Description Modify LXI ceritified at LXI PlugFest Feb 2008 LXI Class c Measurement amp control EL version 11 Channel Hostiam algorab datx com Digital Input MAC address 00 40 9D 2C 66 4A Digital Output IP address Modif
66. ing Started chapter the shaded area in the diagram shows you where you are in the getting started procedure d Prepare to Use the DT8871U or DT8871 Ns see Chapter 2 starting on page 27 Set Up and Install the DT8871U or DT8871 see Chapter 3 starting on page 37 Wire Signals see Chapter 4 starting on page 51 Verify the Operation of the DT8871U or DT8871 see Chapter 5 starting on page 65 Figure 1 Getting Started Flow Diagram 23 Chapter 1 24 Part 1 Getting Started 2 Preparing to Use the DT8871U or DT8871 Dc n e ER 29 Checking the System Requirements 000 30 Installing the Sofware o eis pieneni ese he ne met mer thee 31 Viewing the Documentation 35 27 Chapter 2 Prepare to Use the DT8871U or DT8871 this chapter Set Up and Install the DT8871U or DT8871 see Chapter 3 starting on page 37 Wire Signals see Chapter 4 starting on page 51 Verify the Operation of the DT8871U or DT8871 see Chapter 5 starting on page 65 28 Preparing to Use the DT8871U or DT8871 Unpacking Open the shipping box and verify that the following items are present e DT8871U or DT8871 temperature instrument EP372 Ethernet cable e EP361 5V power supply and cable TEMPpoint CD ROM If an item is missing or damaged contact Data Translation If you are in the United States call the Customer Service Departme
67. ing the File menu and clicking Quit 165 Appendix C 166 z Configuring Network Settings Configuring the PC to Use Auto IP 00 0004 168 Specifying a Static IP Address for your Instrument 172 Reconfiguring the PC to Use a Static IP Address 174 167 Appendix D Configuring the PC to Use Auto IP To set up the TEMPpoint instrument when the LAN does not support a DHCP server and your PC is configured to use a static IP address you must temporarily reconfigure the PC to use Auto IP by performing the following steps Note This procedure may differ slightly depending on your computer and the version of Windows you are using Windows XP instructions are shown here 1 From the Windows Start menu click Settings and then click Network Connections 2 Right click Local Area Connection and select Properties This connection uses the following items v dB File and Printer Sharing for Microsoft Networks V dili QoS Packet Scheduler Intemet Protocol TCP IP v lt Propeties Description Transmission Control Protocol Intemet Protocol The default wide area network protocol that provides communication across diverse interconnected networks v Show icon in notification area when connected v Notify me when this connection has limited or no connectivity Lok cms 168 Configuring Network Settings on Your PC
68. input voltage Low input voltage High input current Low input current DC 3 to 28 V 41 5V 2 2 kQ resistor to 1 2 V 2 2 kQ resistor to 1 2 V Termination Series 2 2 KQ Outputs Output type Solid state relay Output driver CMOS High output 30V Low output 0 4 V 400 mA Breakdown voltage 60V Contact impedance 10 Isolation voltage To computer ground 500 V Channel to channel 250 V a Determined by the pin spacing in the 37 pin digital connector For greater channel to channel isolation use every other digital I O line using every other digital I O line allows 500 V isolation channel to channel Specifications Power Physical and Environmental Specifications Table 16 lists the power physical and environmental specifications for the DT8871U and DT8871 temperature instruments Table 16 Power Physical and Environmental Specifications Feature Specifications External power requirements 5 V 0 25V 1 25 A 0 8 A typical Physical Dimensions of enclosure 88 14 H x 212 85 mm W x 211 43 mm D Weight 1704 g Environmental Operating temperature range 0 C to 55 C Storage temperature range 25 C to 85 C Relative humidity to 95 noncondensing Altitude up to 10 000 feet 141 Appendix A Regulatory Specifications Table 17 lists the regulatory specifications for the DT8871U and DT8871 temperature instruments Table 17 Regulatory
69. isk sce candace Rv head PEERS 160 Viewing a Data File eoc sese cee ce een 163 Reading Digital Input Values 0000000005 164 Exiting from the TEMPpoint Application 165 149 Appendix C 150 Overview In addition to the web interface described in Chapter 5 you can verify the operation of the DT8871U and DT8871 temperature instruments using the TEMPpoint application that is provided with the instrument The TEMPpoint application developed using Measure Foundry lets you perform the following functions Configure your TEMPpoint instrument Acquire temperature or voltage data from up to 48 analog input channels Display temperature or voltage data during acquisition Use a Chart Recorder to display and log data to an hpf file for later analysis View any hpf file and view the last recorded hpf data file in Microsoft Excel Set minimum and maximum alarm limits for each channel Set the state of the digital output lines based on alarm limits Read the state of the digital input port If desired you can use Measure Foundry to customize this application Refer to page 31 for information on installing the TEMPpoint application Using the TEMPpoint Application Running the TEMPpoint Application To run the TEMPpoint application perform the following steps 1 Click Start gt Programs gt Data Translation Inc gt TEMPpoint TEMPpoint The Device Selection screen is displa
70. kes the previous 16 samples adds them together and divides by 16 Verifying the Operation of the DT8871U or DT8871 Alarm Limits Configuration Use the Configuration gt Limits web page to define alarm conditions for specific enabled channels that you want to measure If the alarm condition occurs the specified digital output line is turned on DATATRANSLATION T f mice 7 DISAS Limit Configuration E Home Configuration __ Save configuration __ Save configuration Discard changes _ Help LAN i Channel Limit Low Limit High Limit Digital Output Ree Disable al Filte Menable ec r Limits 1 V Enable 50 oc 500 oc 5 B Digital In T Digital Out 2 v Enable ip E 10 c os Measurement amp control 3 Enable C c Channel 4 Enable v v Digital Input Digital Output 5 Enable v v rue 6 Enable v v Download Measurements Help 7 Enable v v Topics 8 Enable v v Technical Support 9 Enable v v 10 Enable v v b4 i 2 To set up limit checking do the following 1 Under Limit click the Enable buttons next to the channels for which you want to define limits You can use the Disable All button to quickly stop limit checking on all channels For each channel 2 Typea value in the Low Limit text box 3 Typea value in the High Limit text box 85 Chapter 5
71. larm Limits When you start the TEMPpoint application for the first time the following alarm limits are defined for each channel e Minimum alarm limit 0 Maximum alarm limit 100 If the acquired value for a channel is between the defined minimum and maximum alarm limits the value is within range and is displayed in black If the acquired value for a channel is below the minimum or above the maximum alarm limit the value is out of range and is displayed in red To change the alarm limits do the following 1 Select the Windows menu and then select Limit Definition A screen similar to the following is displayed TEMPpoint Limit Definition Ch40 Chd Ch42 Min 0 Mi o Se min Set Max 100 Set Max 100 Set Ch33 Ch34 Min 0 Set min jo Set Max 100 Set Max 100 Set Ch25 Ch26 Mi o Set min o Max 100 Set Max 100 Get Chi Chis min 0 Set min o Max 100 Set Max 100 Cha Chio Min 0 Set win o Max 100 Set Max 100 Chi Ch2 minjo Set win o Max 100 Set Max 100 Open Digital Output Definition Window Max 100 Ch32 Min 0 Max 100 Ch24 mjo a Max 100 Chi6 Min 0 Max 100 Ch8 Min 0 Max 100 Cho Min 0 Max 100 Gal al Sal Sal Gel Set Set Set al Set Set EE EE EE EE EE EE B O88 EE EE EE EE
72. method Therefore this connection scheme is generally recommended for quick set up and verification only Note TEMPpoint instruments do not support the Auto MDIX function therefore use a crossover cable rather than a standard LAN cable to connect your TEMPpoint instrument unless your computer has enabled the Auto MDIX function Setting Up and Installing the DT8871U or DT8871 Computer TEMPpoint Standard LAN Cable if PC enabled Auto MDIX 5 V Power or Supply Ethernet Crossover Cable if PC doesn t enable Auto MDIX or you are not sure Figure 5 Typical Private LAN Connections when Connecting Directly to a Computer 43 Chapter 3 Applying Power The DT8871U and DT8871 temperature instruments are shipped with an EP361 5V power supply and cable To apply power to the instrument do the following 1 Connect the 5 V power supply to the power connector on the rear panel of the DT8871U or DT8871 Refer to Figure 6 DT8871U DT8871 Rear Panel Power Digital O CAN 5 V In Reset V Q B EP361 5 V Power Supply P4 To wall outlet Figure 6 Attaching a 5 V Power Supply to the DT8871U or DT8871 Temperature Instrument 2 Plugthe power supply into a wall outlet Setting Up and Installing the DT8871U or DT8871 3 Press the Power switch on the rear panel of the instrument shown in Figure 6 to turn on the DT8871U or DT8871 temperature instr
73. nd drop components on a form and configure their property pages to access all elements of your system Measure Foundry supports all LXI instrument classes through IVI COM Instruments with interfaces such as GPIB PXI LXI RS 232 and USB are supported through SCPI commands using the VISA transport layer Order the Instrument Pak for Measure Foundry SP1309 CD to build your own application for the TEMPpoint instrument DtxTEMPpoint IVI COM driver This driver provides access to the DT8871U or DT8871 temperature instrument functions through a COM server The IVI COM driver works in any development environment that supports COM programming including Measure Foundry MATLAB Visual Basic NET Visual C NET Agilent VEE Pro LabVIEW LabWindows and others SCPI commands Use SCPI commands to program TEMPpoint LXI instruments Refer to the SCPI Programmer s Manual for TEMPpoint UM 23040 for information on the supported SCPI commands and example programs TEMPpoint Calibration Utility Users can calibrate any TEMPpoint instrument in the field using precise calibration equipment and the TEMPpoint Calibration Utility Since each TEMPpoint instrument consists of 48 individual instruments great care must be taken to ensure that proper warm up times are followed and precise calibration equipment is used Overview The TEMPpoint Calibration Utility ships with a comprehensive help file that describes the required equipment and cal
74. nel as far away as possible from sources of high or low temperatures or strong air currents such as fans Prevent electrostatic discharge to the I O while the TEMPpoint instrument is operational Select an appropriate wire length and gauge for each thermocouple in general use the shortest wire length and largest gauge for the application to yield best results Use shielded thermocouple wire for maximum rejection of electrical interference Warm Up Time For accurate temperature measurements the DT8871 requires a warm up time of 30 minutes for the analog circuitry to stabilize 53 Chapter 4 Signal Connections Each DT8871U or DT8871 temperature instrument contains Cu Cu thermocouple jacks for connecting thermocouple inputs a 37 pin digital I O connector and an Ethernet connector for attaching to a host computer The remaining sections of this chapter describe how to attach thermocouple inputs voltage inputs and digital I O signals to the the instrument 54 Wiring Signals Connecting Thermocouple Inputs Depending on the model you purchased you can connect up to 48 thermocouples input signals to the thermocouple jacks on the DT8871U or DT8871 Internally these signals are connected in differential mode You can mix and match the following thermocouple types across channels B E J K N R S and or T Each Cu Cu thermocouple input jack is polarized and accepts a mating Cu Cu plug in the appropr
75. nnels to Disk check the channels that you want to log to disk when you use the Chart Recorder described on page 160 The first time you use the TEMPpoint application all channels are selected for data logging Under Acquisition Frequency click the frequency 10 Hz 5 Hz 2 Hz Every 2 s Every 5 s Every 10 s Every Minute Every 2 Minutes Every 5 Minutes at which to simultaneously sample all channels Notes If you wish to calibrate all channels performing an auto zero function on software command click the Auto Calibrate button When you are finished configuring the TEMPpoint application click OK To save the configuration settings click the Configuration menu and then click Save Configuration File 155 Appendix C 156 10 Enter a name for the configuration file select the directory in which to save the file and then click Save This file which has the extension TEMPpoint is saved in the following directory on your hard disk by default NDocuments and Settings All Users Application Data Measure FoundryN Examples Ready to Measure Applications Note You can save numerous configuration settings if desired To load a previously saved configuration click the Configuration menu and then click Load Configuration File Restart acquisition by clicking Start Acquisition from the Acquisition menu or by clicking Start Stop from the main window Using the TEMPpoint Application Defining A
76. ns Table 7 lists the basic instrument specifications for the DT8871U and DT8871 temperature instruments Table 7 Basic Instrument Specifications Feature Specifications Number of channels in channel list DT8871U 8 and DT8871 8 DT8871U 16 and DT8871 16 DT8871U 24 and DT8871 24 DT8871U 32 and DT8871 32 DT8871U 40 and DT8871 40 DT8871U 48 and DT8871 48 9 8 differential analog inputs 1 digital input port 17 16 differential analog inputs 1 digital input port 25 24 differential analog inputs 1 digital input port 33 32 differential analog inputs 1 digital input port 41 40 differential analog inputs 1 digital input port 49 48 differential analog inputs 1 digital input port ann ne A D converter type 24 bit Sigma Delta 128 Specifications Thermocouple Specifications Table 8 lists the thermocouple specifications for the analog input subsystem on the DT8871U and DT8871 temperature instruments Table 8 Thermocouple Specifications Feature Specifications Thermocouple types software selectable B E J K N R S T A D resolution 24 bits Sample rate 10 Samples s Thermal disturbance channel to channel None Upscale break detection current 100 nA System temperature error DT8871U See Table 9 on page 130 DT8871 See Table 10 on page 132 System Temperature Error for the DT8871U Table 9 lists the accuracy of the DT8871U for each t
77. nstruments this document describes the supported SCPI commands and example programs for TEMPpoint IVI foundation www ivifoundation org Omega Complete Temperature Measurement Handbook and Encyclopedia or the Omega Engineering web site http www omega com Both resources provide valuable information on thermocouple types standards and linearization Where To Get Help 14 Should you run into problems installing or using the DT8871U or DT8871 temperature instrument the Data Translation Technical Support Department is available to provide technical assistance Refer to Chapter 7 for more information If you are outside the United States or Canada call your local distributor whose number is listed on our web site www datatranslation com Overview Hardware Features ccc ces Cere EI RE ere betes 16 Supported Somware icccsic ee err e e ed ave se EYE 19 JADUGESOIIBE oy Lie n Sp adad steer gade CE CRM RE RA kes 22 Getting Started Procedure cero ree ree d 23 15 Chapter 1 16 Hardware Features TEMPpoint is a family of temperature measurement instruments that includes the DT8871U and DT8871 The DT8871U and DT8871 are 24 bit temperature instruments for the Ethernet LXI bus It is a class C device and complies with LXI version 1 1 The DT8871U and DT8871 instruments are available in a number of configurations listed in Table 1 to accommodate the number of analog input channels you need The DT8871U v
78. nt at 508 481 3700 ext 1323 An application engineer will guide you through the appropriate steps for replacing missing or damaged items If you are located outside the United States call your local distributor listed on Data Translation s web site www datatranslation com Once you have unpacked your DT8871U or DT8871 temperature instrument check the system requirements as described in the next section 29 Chapter 2 30 Checking the System Requirements For reliable operation the computer that accesses your DT8872 temperature instrument requires the following configuration PC with Pentium III 500 MHz or higher processor Screen resolution of 1024 x 768 or higher 256 MB of RAM 512 MB or more recommended 50 MB of hard disk space Ethernet port CD ROM drive Administrator privileges for software installation For access to the instrument web interface java Version 6 Update 5 or greater Internet Explorer 6 0 or 7 0 web browser Refer to page 67 for more information on installing Java and configuring your browser settings Acrobat Reader 5 0 or later for viewing documentation Once you have verified that your system meets the system requirements install the software as described in the next section Preparing to Use the DT8871U or DT8871 Installing the Software This section describes how to install the software you need to use the DT8871U or DT8871 TEMPpoint instrument Prerequisite Softw
79. nt s web interface Use one of the MEASure SCPI commands to specify the channels that you want to sample and the configuration of the channels if needed Refer to Table 3 on page 103 for a list of the available channels for your instrument model One single value is then acquired from each analog input channel simultaneously and returned If you need to continuously acquire data from one or more channels use continuous scan mode described next instead Continuous Scan Mode Continuous scan mode takes full advantage of the capabilities of the DT9871 temperature instrument Use continuous scan mode if you want to accurately control the period between successive simultaneous conversions of specific channels 109 Chapter 6 110 In addition to the analog input channels this conversion mode allows you to read the digital input port all 8 digital input lines as part of the analog input data stream This feature is particularly useful when you want to correlate the timing of analog and digital events Specifying Channels for a Continuous Scan Operation Using software enable the analog input channels that you want to sample by specifying the channel numbers in the channel list You can also read the value of the digital input port through the analog input data stream by specifying the digital input channel in the channel list the number of the digital input channel depends on the instrument model that you are using as s
80. of the DT8871 temperature instrument lights to alert you when the voltage is out of range see Figure 8 on page 48 for the location of this LED For channels configured with a thermocouple type other than None voltage the LMT LED lights when the temperature limit is out of range for the specified thermocouple type In addition if the input voltage is less than the legal voltage range for the selected thermocouple type the software returns the value TEMP OUT OF RANGE LOW 88888 decimal If the input voltage is greater than the legal voltage range for the selected thermocouple type the software returns the value TEMP OUT OF RANGE HIGH 88888 decimal Principles of Operation Note If you are continuously measuring from a properly configured thermocouple input channel and the thermocouple opens or becomes disconnected the open thermocouple pull up circuit causes the input voltage to rise to approximately 0 7 V over a few seconds In this case the temperature value rises very quickly and you will receive the TEMP OUT OF RANGE HIGH 88888 decimal value followed by the OPEN SENSOR 99999 decimal value In this case the OPN LED lights when the open thermocouple is detected and the LMT LED lights when the temperature limit is out of range for the thermocouple type Resolution The resolution of the analog input channels is fixed at 24 bits you cannot specify the resolution in software Calibration Your TEMPpoin
81. of up to 48 Channels 500 Volt Isolation Barrier Calibration ROM The USB LED is not used on this instrument 3 SE ao 1 of 8 I nl Digital Output H m Isolators ccc RJ45 Connector ENet Link Ethernet gt k gt LED ENet Activity gt LAN LED gt Power LED E gt USB LED Limit e gt LED Open TC gt LED lt gt ID ROM Figure 17 Block Diagram of the DT8871U Temperature Instrument 100 Principles of Operation Figure 18 shows a block diagram of the DT8871 temperature instrument 1of8 64KB m SRAM Digital Input EN S Isolators 58 100 nA a3 Break cE Detection Isolated 1of8 a 8 PEDE gt Digital Output H m Isolators ccc v E 91 AN a 24 Bit a EN RAS E AD E connector 9 AN 3 Control FPGA ENet Link CJC Per S Ethernet gt LED i lt e Point S Q 1 of up to 48 Channels 7 ENet Activity Sa Se gd c LED Embedded Controller gt gt LAN LED Calibration ROM gt M Power LED gt USB LED Limit gt ED The USB LED is not used on this instrument gt Open TC lt gt ID ROM Figure 18 Block Dia
82. oint application developed using Measure Foundry provides a quick way to verify that your temperature measurement instrument is working properly To install the TEMPpoint application the Eureka Discovery Utility and all the components necessary to use the TEMPpoint application with the DT8871U or DT8871 instrument including the IVI COM driver perform the following steps 1 Insert the TEMPpoint CD into your CD ROM or DVD drive The installation program should automatically start and the TEMPpoint installation program should appear 2 If the installation program does not automatically start double click Setup exe from the CD The TEMPpoint installation program appears 3 Click Install from Web recommended to get the latest version of the software or Install from CD to install the software from the CD 4 Ifyouare installing from the web perform these steps a Click TEMPpoint Software and follow the prompts to install the TEMPpoint software including the TEMPpoint application and IVI COM driver and related documentation b Ifyou wish to install the evaluation version of Measure Foundry click Measure Foundry Evaluation from the TEMPpoint Installation web site and follow the prompts to install the software and related documentation Note To use Measure Foundry with the TEMPpoint instruments select the evaluation version of Measure Foundry Pro Instruments Pak 32 Preparing to Use the DT8871U or DT8871 c
83. onfiguration 55 error conditions 113 filtering 112 input range 106 open thermocouple detection 105 resolution 107 sample clock 108 specifications 128 129 135 136 137 138 wiring current loop inputs 59 wiring thermocouple inputs 55 wiring voltages 58 application wiring current loop inputs 59 Index digital inputs 63 digital outputs 64 thermocouple inputs 55 voltages 58 applying power 44 associating CSV files 73 attaching the module to the computer 39 Auto IP 41 46 168 C cables 39 crossover 42 standard LAN EP372 41 calibration analog input 107 channels analog input 102 digital I O 115 116 CJC in hardware 105 clients 67 clocks analog input 108 cold junction compensation 105 configuring alarm limits 85 analog input channels 81 digital inputs 87 digital outputs 88 filters 83 LAN 79 scan rate 82 configuring network settings on PC 167 177 Index 178 connecting signals current loop inputs 59 digital inputs 63 digital outputs 64 thermocouple inputs 55 voltages 58 connecting to the LAN 39 private LAN 41 site LAN 39 continuous analog input scan operations 109 conversion modes analog input 109 continuous analog input scan mode 109 digital I O 118 simultaneous single value analog input 109 conversion rate 111 crossover cable 42 CSV files 73 customer service 126 D data encoding 113 data format 113 DHCP server 39 41 46 differential channels 55 digital I O
84. onsole The Java Console window appears 3 Verify that version 1 6 or greater of the Java plug in installed Java Console Java Plug in 1 6 0 05 Using JRE version 1 6 0 05 Java HotSpot TM Client VM Internet Explorer Browser Settings For proper operation of the instrument s web interface ensure that your Internet Explorer 6 0 or 7 0 browser is configured as follows JavaScript Active Scripting must be enabled Security level of the TEMPpoint instrument IP address must be Medium high or lower e Pop up blockers must be disabled The following sections describe how to configure these settings JavaScript To enable JavaScript also referred to as ActiveScripting perform the following steps 1 From the Internet Explorer browser select Tools gt Internet Options 2 Click the Security tab 3 Select Internet and then click Custom Level 4 Scroll down to the Scripting section 68 Verifying the Operation of the DT8871U or DT8871 Security Settings Settings 3 Scripting 8 Active scripting Disable Enable Prompt 5 Under Active Scripting select Enable and then click OK Security Levels By default the IP address of the TEMPpoint instrument is added to the Internet zone If you d rather leave the settings of the Internet zone at a level higher than Medium high then you can add the IP address of the TEMPpoint to either the Local intranet or Trusted sites zone and configure the security lev
85. ply with CISPR EN55022 Class A and EN61000 6 1 requirements and also with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Changes or modifications to this equipment not expressly approved by Data Translation could void your authority to operate the equipment under Part 15 of the FCC Rules Note This product was verified to meet FCC requirements under test conditions that included use of shielded cables and connectors between system components It is important that you use shielded cables and connectors to reduce the possibility of causing interference to radio television and other electronic devices Canadian Department of Communications Statement This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le pr sent appareil num rique n met pa
86. r of Occurences 200 20 10 0 10 20 Noise in uV Figure 24 System Noise on the DT8871 Using No Software Filter Raw Filter 133 Appendix A HISTOGRAM OF SYSTEM NOISE 800 700 500 400 200 100 Number of Occurences 4 2 0 2 4 Noise in uV Figure 25 System Noise on the DT8871 Using the Moving Average Filter 134 Specifications Isolation and Protection Specifications Table 11 lists the isolation and protection specifications for the analog input subsystem on the DT8871U and DT8871 temperature instruments Table 11 Isolation and Protection Specifications Feature Specifications Overvoltage protection power on off 40 V ESD protection Arc 8kV Contact 4 kV Isolation voltage to the host computer 500 V Channel to channel isolation 500 V 135 Appendix A Memory Specifications Table 12 lists the memory specifications for the analog input subsystem on the DT8871U and DT8871 temperature instruments Table 12 Memory Specifications Feature Specifications Data memory onboard 4 MByte For Data logger built in maximum time before old data is overwritten 48 channels 10 Hz 30 minutes 48 channels 1 Hz 5 hours 48 channels Q 0 1 Hz 50 hours a Assumes CJC data is not collected AND limit detection is off for all channels If power fails all temperature data in the system is lost The channel input type and filter settings
87. rd is user You can change the password on this page Note that the new password goes into effect after the device reboots If you are prompted for a password before the device reboots you must enter your original password 80 Verifying the Operation of the DT8871U or DT8871 Contact your system administrator and view the instrument s built in help pages to determine the correct LAN settings Channel Configuration Use the Configuration gt Channel web page to enable the channels that you want to measure specify the sensor to use for each channel and add a label to describe each channel if desired DATATRANSLATION DTUB 1 24 Channel Configuration Home LAN Channel Enable Channel Type Label Channel Scan rate EK FTT Filter 0 V Enable J i Oven diss 1 v Enable J Heated Digital In Digital Out 2 Y Enable iv i Measurement amp control 3 Enable v v Channel v v wv Digital Input Digital Output 5 v Enable v SUS 6 v Enable v MJ Download Measurements Help 7 V Enable Jw Topics 8 V Enable J v Technical Support 9 v Enable 3 M To change your channel configuration do the following 1 Under Enable Channel check the boxes next to the channels that you want to collect data You can use the Enable All and Disable All buttons for quick configuration of many channels 81 Chapter 5
88. re that Automatic private IP address is selected 170 Configuring Network Settings on Your PC Internet Protocol TCP IP Properties ee General Altemate Configuration If this computer is used on more than one network enter the altemate IP settings below Automatic private IP address Renew the IP address of the computer From the Windows Start menu click Settings gt Network Connections gt Local Area Connection gt Support gt Repair Or if you prefer to do this from the command prompt window click Run from the Windows Start menu enter cmd and click OK to bring up the command prompt window Then from the command prompt window enter ipconfig renew renews the IP address ipconfig all checks the IP address 171 Appendix D 172 Specifying a Static IP Address for your Instrument To specify a static IP address for your TEMPpoint instrument use the LAN Configuration page of the web interface as follows 1 2 DATA TRANSLATION MP From the LAN Configuration page click Modify Specify the username as sysadmin and specify the password the default password is user You can change the password if you desire Uncheck the checkbox called Automatic private IP address enabled Click Static Specify a static IP address for the TEMPpoint instrument so that is will be on the same subnet as your PC DT8872 Home Config
89. red for voltage inputs You can specify the thermocouple types for channels over the LAN using the web interface as described in Channel Configuration on page 81 in software using the Change Configuration dialog in the supplied TEMPpoint application or by using an API call in your application program You can also use standard SCPI commands over VISA or sockets if desired Note In a mix and match thermocouple system it is easy to accidentally mismatch the software and hardware configuration for a channel Therefore it is recommended that you pay particular attention when configuring channels since the resultant errors may be notlarge enough to notice initially but may be significantly larger than the accuracy specification for the instrument 103 Chapter 6 Since each channel has its own 24 bit A D analog inputs are measured simultaneously Using the DT8871U or DT8871 temperature instrument you can acquire data from a single analog input channel acquire a single value from all the analog input channels simultaneously or continuously acquire data from one or more analog input channels simultaneously using a channel list Refer to page 109 for more information on specifying the channels for 104 each of these conversion modes Table 4 lists the supported measurement range for each thermocouple type Table 4 Supported Measurement Range for Each Thermocouple Type
90. rement amp control 14 30 12 25 23 32 26 9 open TC Limits e 8 14 30 11 2523 32 269openTC 08 14 30431 4 2501 23 32 2689openTC Desunt 14 3011414 2501 2332 26890penTC Digital Output 2008 14 30 11 25 01 23 32 26 88 open TC File 24 2008 14 30 11 25 01 23 32 26 88 open TC 25 01 23 32 26 87 open TC 2501 23 32 26 87 openTC 25 2332 26 86 open TC tonics 25 2332 26860penTC Download Measurements 14 EAR t Help Technical Support gt 14 30 10 24 99 23 32 26 85 open TC 22 22 6 24 2008 14 30 09 t 24 99 23 31 2685 open TC 23 6 24 2008 14 30 09 t 24 99 23 31 26 85 open TC 24 6 24 2008 14 30 09 25 23 32 26850penTC y csvjtemppoint 6 24 2008_1 lt xi Change your Microsoft Excel Microsoft Explorer and Internet Explorer settings to turn off these behaviors and open your files directly in Excel 95 Chapter 5 96 Part 2 Using Your DT8871U or DI8871 Temperature Instrument Principles of Operation Analog Input Features cies Lb eee eet s 102 Digital I O Features eosdebet yu 115 99 Chapter 6 Figure 18 shows a block diagram of the DT8871U temperature Digital Input 10f8 E Isolators instrument 100 nA Break Detection Isolated DC DC v o WN 24 Bit x20 AID ot ye CJC Per Point 1
91. rement amp control 5 amp Open Channel S amp Digital Input Open Digital Output z amp ben File Download Measurements Help Topics Technical Support If you configured custom labels for the digital input lines those labels are shown here The Current state LEDs show green if the digital input line is on relay is closed or red if the digital input line is off relay is open 92 Verifying the Operation of the DT8871U or DT8871 Downloading Measurements You can use the File gt Download Measurements web page to download your temperature measurement results including timestamp and limit values if applicable to disk Note Before using this feature ensure that you have associated CSV files with Microsoft Excel or Notepad described on page 73 or the data will be displayed in the browser and not saved to a file DATATRANSLATION MPpernt LXI DT8871 48 Download measurements Home Configuration Hel LAN Channel Scan rate Filter Limits Digital In Digital Out Measurement amp control Channel Digital Input Digital Output File Download Measurements Help lopics Technical Support Measurements taken by the instrument are stored in a large circular buffer when the buffer is full the oldest data is overwritten with the most recent data 93 Chapter 5 To download your data do the following 1 Clickthe Download button on this page If scanning
92. s de bruits radio lectriques d passant les limites applicables aux appareils num riques de la class A prescrites dans le R glement sur le brouillage radio lectrique dict par le Minist re des Communications du Canada Table of Contents About this Manual 2000 0c eee eee eee 11 Intended Audience 0 00 cc ccc cece cette e eese 12 How this Manual is Organized 0 000000048 12 Conventions Used in this Manual Ls sss 13 Related Information enanssa annann eannan 13 Where To Get Help 0 0 00 14 Chapter 1 Overview lesen 15 Hardware Features 0 0 0 cece cence eee 16 Supported Software 6 cee eee 19 Accessories Mop EM 22 Getting Started Procedure rruar 23 Chapter 2 Preparing to Use the DT8871U or DT8871 lsslssss 27 Unpacleing eid se aie etoile depen easet in ee nian 29 Checking the System Requirements sssssssse 30 Installing the Software u nan nann eee eee eee ee 31 Prerequisite Software 0 000 e eee eee eee 31 Installing the IVI COM Driver TEMPpoint Application and Eureka Discovery Utility 000 32 Installing SCPI Support Software s a s ssassn 34 Viewing the Documentation 06 0000 cece ee eee ee 35 Chapter 3 Setting Up and Installing the DT8871U or DT8871 lessen 37 Connecting the DT8871U or DT8871 to the L
93. s how to connect a differential voltage input to channel 0 of the DT8871U or DT8871 temperature instrument DT8871U or DT8871 Cho Ww Omega Cu Cu Plug SMPW U M Voltage Input Analog Input 0 lt Analog Input 0 Return EM Signal Source Figure 10 Connecting Voltage Inputs 58 Wiring Signals Connecting Current Loop Inputs In some applications such as solar cell fuel cell and car battery testing applications you may want to accurately sense and measure current in a high voltage loop The DT8871U and DT8871 instruments provide channel to channel isolation of 500 V meaning that each input can be referenced to 500 V For the DT8871U instrument which has an input range of 0 075 V you can use a 1 Q series resistor to measure 0 075 A Similarly you can use a 0 1 Q series resistor to measure 0 75 A For the DT8871 instrument which has an input range of 1 25 V you can use a 1 Q series resistor to measure 1 25 A Similarly you can use a 0 1 Q series resistor to measure 12 5 A or a 10 Q series resistor to measure 20 125 A Figure 11 shows how to wire your signals to measure a current loop In this example the input is referenced to 80 V 59 Chapter 4 60 DT8871U or DT8871 Cho se 1 series resistor Circuit 80V Use a 1 ser
94. s s for all channels Auto calibrating front end resets the zero point on each power up in addition the instrument supports anytime calibration performing an auto calibration function on software command A TEMPpoint Calibration Utility is available for calibrating your TEMPpoint instrument in the field see page 20 for more information on this utility Digital I O subsystem 8 opto isolated digital input lines 8 opto isolated digital output lines the outputs are solid state relays that operate from 30 V at currents up to 400 mA peak AC or DC 17 Chapter 1 Digital I O galvanically isolated to 250 V when using all digital input lines You can read the digital input port through the analog input data stream for correlating analog and digital measurements 18 Overview Supported Software The following software is available for use with the DT8871U and DT8871 temperature instruments Eureka Discovery Utility This utility helps you locate or discover all LXI Ethernet instruments that are connected to your system and provides the following information about your instrument the IP address manufacturer model number serial number and version of the firmware that is running on your instrument In addition you can use this utility to configure Windows firewall settings and update the firmware for your Data Translation LXI instrument Instrument Web Interface This built in interface d
95. suring thermocouples and or voltage inputs The first part of this manual describes how to install and set up your DT8871U or DT8871 temperature instrument and verify that the instrument is working properly The second part of this manual describes the features and capabilities of your instrument using the IVI COM instrument driver software Troubleshooting information is also provided Note If you are using programming the instrument using the IVI COM driver refer to the DtxTEMPpoint IVI COM driver online help for more information If you are using the Measure Foundry to program your instrument refer to the Measure Foundry User s Manual and online help for more information If you are using Standard Commands for Programmable Instruments SCPI to program your instrument refer to the SCPI Programmer s Manual for TEMPpoint for more information 11 About this Manual 12 Intended Audience This document is intended for engineers scientists technicians or others responsible for using and or programming the DT8871U or DT8871 temperature instrument It is assumed that you have some familiarity with thermocouples and that you understand your application How this Manual is Organized This manual is organized as follows Chapter 1 Overview summarizes the major features of the DT8871U and DT8871 temperature instruments as well as the supported software and accessories Chapter 2 Preparing to Use the DT
96. t state of the digital output lines and manually change them if desired Green indicates that the digital output line relay is closed red indicates that the digital output line relay is open DATATRANSLATION T MPpe nt LXI DT8871 48 Digital Output Status and Control Home LAN 8 cose Channel Scan rate f Open pter S open Limits 3 cese Digital In bed Open Digital Out 4 e Closed Measurement amp control bi 5 e Open Channel Digital Input 6 Open Digital Output d amp Closed File Download Measurements Technical Support Note You cannot change the configuration of digital output lines that were configured for limit checking on the Configuration gt Limits page 91 Chapter 5 To change the status of a digital output line relay click the Open Close toggle buttons under the Change State heading for the digital output lines that you want to change You can use these controls to activate or deactivate an external device based on criteria other than temperature that you define Reading the Digital Inputs While the instrument is scanning you can use the Measurement amp control gt Digital Input web page to view the current value of the digital input port DATATRANSLATION MPpernt LXI AREER Home Digital Input Status LAN 0 amp EA Channel 1 Scan rate amp Open Filter 2 amp Gosh Limits B open Digital In Digital Out 2 Open Measu
97. t temperature instrument is factory calibrated to meet or exceed its published specifications using standards traceable to NIST A two step calibration process is used First the A D on each channel is calibrated for offset and gain these values including the zero point are stored in ROM Second each CJC circuit is calibrated In addition the D18871U and DT8871 temperature instruments auto calibrate on each power up cycle to guarantee high accuracy measurements This process also known as auto zeroing resets the zero point of each A D You can also auto calibrate the instrument at any time as long as acquisition is not in progress using a software command Refer to your software documentation for more information on the auto calibration feature 107 Chapter 6 108 While TEMPpoint instruments were designed to preserve high accuracy measurements over time it is recommended that your instrument be recalibrated every year to ensure that it meets or exceeds specifications You can calibrate your TEMPpoint instrument in the field using precise calibration equipment and the TEMPpoint Calibration Utility described on page 20 Optionally you can return your instrument to Data Translation for recalibration For information on factory recalibration contact Data Translation at 508 481 3700 ext 1323 if you are in the USA or call your local distributor if you are located outside the USA see our web site www datatranslation com
98. terface described in Chapter 5 starting on page 65 to see the IP address and host name that is assigned to your TEMPpoint instrument Note When programming a TEMPpoint instrument you access the instrument through its address string which consists of an IP address or host name such as TCPIP0 192 43 218 69 instO INSTR or TCPIP0 192 43 218 69 SOCKET If a host name was returned by the DNS server you can also address the instrument using its host name such as TCPIPO0 arrakis datx com inst0 INSTR 46 Setting Up and Installing the DT8871U or DT8871 Note For IVI COM programmers you can also assign a VISA alias to the instrument For example rather than addressing the instrument as TCPIPO0 192 43 218 69 inst0 INSTR you can use the VISA alias TEMPpointl instead See your VISA documentation for more information on VISA resource strings and creating VISA aliases 47 Chapter 3 Determining Ethernet Activity You can use the ENet Link and ENet Activity LEDs on the rear of the TEMPpoint instrument shown in Figure 8 with the LAN LED on the front of the TEMPpoint instrument shown in Figure 7 to determine the Ethernet activity on your TEMPpoint instrument Table 5 describes the meaning of these LEDs ENet Link ENet Activity LED LED Digital In Out USB LED not used on this instrument LMT LED OPN LED not used on this instrument Figure 8 Rear
99. the input sample clock The sample rate which is the rate at which a single entry in the channel list is sampled is the same as the conversion rate due to the simultaneous nature of the TEMPpoint instrument Figure 19 illustrates scanning a list of three enabled channels channel 0 channel 1 and channel 2 In this example analog input data is acquired simultaneously on each clock pulse of the input sample clock Data is acquired continuously 111 Chapter 6 112 Chan 2 Chan 2 Chan 2 Chan 2 Chan 1 Chan 1 Chan 1 Chan 1 Chan 0 Chan 0 Chan 0 Chan 0 Input Sample Clock Data is acquired continuously Operation starts Figure 19 Continuous Scan Mode Filtering The DT8871U and DT8871 instruments use a Delta Sigma analog to digital converter ADC for each analog input channel to provide simultaneous sampling of all inputs The Delta Sigma converter operates at 10 Hz effectively providing a filter that rejects 50 Hz and 60 Hz power line frequency components and that removes aliasing a condition where high frequency input components erroneously appear as lower frequencies after sampling In addition to the filter provided in hardware you can further reduce noise by selecting one of the following filter options in software Moving Average or Raw Refer to page 83 and to your software documentation for more information on selecting a filter type Principles of Operation D
100. this manual Conventions Used in this Manual The following conventions are used in this manual Notes provide useful information or information that requires special emphasis cautions provide information to help you avoid losing data or damaging your equipment and warnings provide information to help you avoid catastrophic damage to yourself or your equipment tems that you select or type are shown in bold Related Information Refer to the following documents for more information on using the DT8871U and DT8871 temperature instruments e DtxTEMPpoint IVI COM Driver online help For programmers who are developing their own application programs using a tool other than Measure Foundry this document describes how to use the IVI COM driver to access the capabilities of the TEMPpoint instrument 13 About this Manual The TEMPpoint IVI COM driver works with any development environment that supports COM programming including MATLAB from The MathWorks Microsoft Visual C NET or Visual Basic NET Agilent VEE Pro National Instruments LabVIEW or LabWindows M and so on Measure Foundry manual and online help For programmers who purchase Measure Foundry to easily create custom applications for TEMPpoint these documents describe the functions and capabilities of the Measure Foundry software SCPI Programmer s Manual for TEMPpoint For programmers who want to use the SCPI interface to program TEMPpoint i
101. to ensure proper processing Using the original packing materials if available package the instrument as follows Wrap the DT8871U or DT8871 in an electrically conductive plastic material Handle with ground protection A static discharge can destroy components on the instrument Place ina secure shipping container Return the DT8871U or DT8871 to the following address making sure the RMA number is visible on the outside of the box Customer Service Dept Data Translation Inc 100 Locke Drive Marlboro MA 01752 1192 m Specifications Analog Input Specifications 000 iesiri 128 Digital I O Specifications 2 2 05 054 see nee e ey 140 Power Physical and Environmental Specifications 141 Regulatory specications ocsi eerte e ERE Cede euis 142 Thermocouple Connector Specifications s 143 Ethernet RJ45 Connector Specifications issue 144 127 Appendix A Analog Input Specifications The analog input specifications for the DT8871U and DT8871 instruments are organized as follows Basic instrument specifications listed on this page e Thermocouple specifications listed on page 129 Isolation and protection specifications listed on page 135 Memory specifications listed on page 136 Temperature stability specifications listed on page 137 e Voltage measurement specifications listed on page 138 Basic Instrument Specificatio
102. ument The Power LED on the front panel lights to indicate that power is on Figure 7 shows the front panel of the DT8871U 48 including the locations of the LEDs Ch40 Ch41 Ch42 Ch43 Ch44 Ch45 Ch46 Ch47 Ch32 Ch33 Ch34 Ch35 Ch36 Ch37 Ch38 Ch39 Ch24 Ch25 Ch26 Ch27 Ch28 Ch29 Ch30 Ch31 Ch16 Ch17 Ch18 Ch19 Ch20 Ch21 Ch22 Ch23 Ch8 Ch9 Ch10 Ch11 Ch12 Ch13 Ch14 Ch15 Cho Chi Ch2 Ch3 Ch4 Ch5 Ch6 Ch7 Power LAN TzMPpent punctus Power LED LAN LED Figure 7 Front Panel of the DT8871U 48 45 Chapter 3 Getting an IP Address and Host Name Once your TEMPpoint instrument is connected to the LAN and powered on the instrument automatically requests an Ethernet address from a DHCP Dynamic Host Configuration Protocol server if available and a host name from a DNS Dynamic Domain Name Service server if available If these services are not available on the LAN the TEMPpoint instrument uses Auto IP to set up its TCP IP configuration In this case the IP address will be in the range of 169 254 0 0 to 169 254 255 255 with a subnet mask of 255 255 0 0 Note If no DHCP server exists and your PC is set up to use a static IP address you must temporarily reconfigure your PC to use Auto IP then configure your TEMPpoint instrument to use a static IP address as described in Appendix D starting on page 167 You can use the instrument s web in
103. uration LAN Channel Scan rate Filter Limits Digital In Digital Out Control Scan Digital Output Measurements Channel Digital Input File Download Measurements Help Topics Technical Support LAN Configuration pent Save configuration Discard changes Help LXI LINES Hostname Description IP address assignment Primary SNTP server Secondary SNTP server Password MAC address DT8872 This TEMPpoint box is located in the SQA lab DHCP Automatic private IP address enabled 9 static Static IP Address configuration IP 10472 255 255 255 0 192 168 187 218 Mask Gateway Primary DNS Secondary DNS 192 43 244 18 132 163 4 101 user 00 40 90 43 35 97 Configuring Network Settings on Your PC Note You need a Simple Network Time Protocol SNTP time server on the LAN otherwise you need to provide a gateway See your network administrator for more details 173 Appendix D 174 Reconfiguring the PC to Use a Static IP Address After you have set up your TEMPpoint instrument you can reconfigure your PC to use a static IP address using this procedure 1 From the Windows Start menu click Settings and then click Network Connections Right click Local Area Connection and select Properties In the General tab window double click Internet protocol TCP IP Select Use the following IP address
104. ure 23 for more information about system noise 130 The histograms shown in Figure 22 and Figure 23 characterize the Gaussian system noise distribution for each of the available filter types on the DT8871U Note that converting uV error to temperature error depends on thermocouple type For example a K thermocouple changes approximately 39 uV per degrees C therefore a noise level of 0 1 uV adds less than 0 003 C error 0 1 pV 39 uV fora type K thermocouple Specifications HISTOGRAM OF SYSTEM NOISE AC Number of Occurences 1 0 5 0 0 5 1 Noise in uV Figure 22 System Noise on the DT8871U Using No Software Filter Raw Filter HISTOGRAM OF SYSTEM NOISE 100 Number of Occurences 0 33 0 17 0 0 17 0 33 Noise in uV Figure 23 System Noise on the DT8871U Using the Moving Average Filter 131 Appendix A System Temperature Error for the DT8871 Table 10 lists the accuracy of the DT8871 for each thermocouple type at several temperature points over the dynamic range of the instrument Table 10 Calculated Thermocouple Accuracy of the DT8871 Thermocouple Type Input Temperature J K T E S R B N 100 C 0 33 C 0 37 C 0 38 C 0 31 C 0 44 C 0 C 0 3 C 0 33 C 40 33 C 0 28 C 1 12 C 1 14 C 0 39 C 100 C 0 31 C 0 29 C 0 31 C 0 27 C 0 88 C
105. uter manufacturer for more information Electrical noise Check your wiring and either provide better exists shielding or reroute unshielded wiring see the instructions in Chapter 4 123 Chapter 7 Table 6 Troubleshooting Problems cont Symptom Possible Cause Possible Solution Data appears to be invalid An open connection exists Check your wiring and fix any open connections see the instructions in Chapter 4 A transducer is not connected to the channel being read Check the transducer connections see the instructions in Chapter 4 The RTD or voltage input that you connected to the channel does not match the software configuration for that channel Check your wiring and ensure that what you specify in software matches your hardware configuration see the instructions in Chapter 4 Your TEMPpoint instrument may need recalibration The TEMPpoint instrument is calibrated at the factory Thereafter yearly calibration is recommended Use the TEMPpoint Calibration Utility described on page 20 or return your instrument to Data Translation for recalibration For information on TEMPpoint factory recalibration contact Data Translation at 508 481 3700 ext 1323 if you are in the USA of call your local distributor if you are located outside the USA see our web site www datatranslation com for the name and telephone number of your nearest distr
106. y 192 43 218 30 DHCP File Time source Modify 192 43 244 18 Download Measurements Time Zone Modify GMT 5 Help Current Time Tue Jun 24 2 33 PM 2008 Topics VISA resource string TCPIPO algorab datx com INSTR Technical Support If you have multiple TEMPpoint instruments you can click Turn ON front panel identification indicator to light the LAN LED on the instrument described on page 45 to indicate the device you are using To change the description IP address or time source associated with the TEMPpoint instrument click the Modify links to navigate to the LAN Configuration page described on page 79 To change the time zone associated with the TEMPpoint instrument click the Modify link to bring up the following screen 77 Chapter 5 78 Time Zone Save configuration Discard changes GMT v 5 hour v 0 minute v You specify the time zone that is used by the TEMPpoint instrument as an offset either or from GMT Greenwich Mean Time The specified hour and minute is added to the UTC Coordinated Universal Time time that is maintained by the instrument For example choosing 5 hours 0 minutes sets the current time zone used by the instrument to five hours and 0 minutes behind GMT Verifying the Operation of the DT8871U or DT8871 Configuring the Instrument Web pages are provided for configuring the following aspects of your TEMPpoint instrument Local Area Network LAN settings
107. yed Device Selection Please select a TEMPpoint instrument from the dropdown list below or one of the Device Simulation modes Next click Continue to start measuring Available TEMPpoint Instruments State Scanning Model DT8871 24 Powered by Firmware Version 1 5 1 1 measure S N 8189005 Click for more information Device Simulation Mode DT9872 Device Simulation Mode DT9871 Continue Advanced 2 By default the application discovers all of the TEMPpoint instruments that are available and displays them in the list of Available TEMPpoint Instruments If you want to refresh this list to determine if other TEMPpoint instruments are available click Refresh list 151 Appendix C 152 If you do not have a TEMPpoint instrument connected or if you want to simulate the operation of a device click Device Simulation Mode DT9871 to simulate the operation of the DT9871 or click Device Simulation Mode DT9872 to simulate the operation of the DT9872 and go to step 6 When selected the button indicator turns green If your TEMPpoint instrument is included in the list of Available TEMPpoint Instruments and you want to connect to it select the connect string for the TEMPpoint instrument that you want to use from the list of Available TEMPpoint Instruments and go to step 6 Information about the instrument including the scanning status model number firmware version and serial number is display

DT8871U and DT8871 User's Manual for LXI Temperature Instruments

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