XTR108EVM-DK User`s Guide (Rev. A)
Contents
1. Schematics vec vec TP1ITP20TP21 1 9 9k vec TP28 1 Fi 2 a te m am 3 F2 4 v 5 F3 Ji c 4 R11 100 R12 100 gt 13 100 TP22 TP23 TP24 TP25 TP26 TP27 IP e e so ji ip af I i L i i U TP TP TPS SS EE Q oO SR and rset 12 RSET Control Circuits 12K PEG 21 i Voltage REFo Reference neri XTR108 TP2 TP3 TP4 3 Sub Reg 927 5 FEES Driver y E e Linearization sai a A 3 v o T o s Li RZi 3 es lo c2 4 lo V 3 4 6 C7 s E z TP8 TPIOTP11 TPiGIPi7IPi8 e E TP12 TP13 Charge Pump Ti R8 RD R7 C10 RZ 36 5k R6 2 VCM bs T 30k cn Juma IPH F Figure 38 XTR108EVM Sensor Interface Board 36 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 4i TEXAS INSTRUMENTS www ti com Schematics FCC Warnings This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other environments may cause inter2. SEE 00 7 i Fault Monitor Fine Zero ipis D DDE 00 AN d 00 DAC 00 CECI 00 Read XTR G Lin Coeff iv Nm Write XTR cac enc EA 00 ess Read 2 E EEPROM Limits 00 Write EEPROM IMAA In Run 6340 Q Figure 15 XTR108EVM Board Control Software Summary Tab SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 17 i INSTRUMENTS www ti com Software Overview 6 2 18 Find Resistors Tab The XTR108 has five channels that allow for five different RTD types or temperature ranges In order to set up the XTR108 so that it can accommodate these ranges external components must be selected see Figure 16 This tab allows the user to enter the RTD type the temperature range the Callendar Van Dusen Coefficients and the XTR108 output range Pressing the Calculate Results button will compute all the resistors that are required to configure the XTR108 for your specific application These resistance values will also be copied into the Calibration Tab of the software tool A more detailed description of this function and a step by step calibration example is given in the XTR108 Quick Start System Reference Guide i Texas Instruments XTR108 EVM Application File EEPROM Setup View Help lae Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 Find Resistors Enter RTD Type amp Temp Range Enter Callendar Van Dusen Coefficients C
3. OIN NIO J 2 a 8 8 Cli cl c Rin Bj 793 OHHO i T4 M Cfilt p m2 OOO e FIIIT OO 38855 3 35353 3 3 t a E coooa y 3 cy kj rj n t 3 Een 5 T3 TP4 Teg TP2 TPS Tmo TPI TP23 6 Figure 4 XTR108EVM Sensor Interface Board Factory Jumper Settings Table 1 XTR108 Sensor Interface Board Factory Jumper Settings Jumper Position Comments JUMP1 lour Use Current Output mode JUMP2 FET Use FET subregulator JUMP3 FET Use FET subregulator JUMP4 lout Use current output mode JUMP5 lout Use current output mode JUMP6 No load Do not connect load to voltage output JUMP7 Bypass Bypass Voltage Mode Charge Pump SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 7 D TEXAS INSTRUMENTS www ti com Initial Setup and Check Out 5 2 Hardware Set up For additional information see Figure 5 Connect the XTR108 Sensor Interface Board to the XTR108 PC Interface Board On the XTR108 PC Interface Board connect a 7Vpc 7Vpc 10Vpc Lab Supply Connect the XTR108EVM PC Cable from Ppc an RJ 45 jack on the XTR108 PC Interface Board to an RS 232 serial port on the test computer 7Vpc Supply 7Vpc to 10Vpc 200mA RTD Vioop 12V to 24V XTR108 Designer s Kit Supply Software r1 EH Xmos XTR6 E am Sensor Interface Sensor Interface i Board Board Test Computer Figure 5 Hardware Setup Initial Checkout 5 3 Board Control Software Installation
4. layout drawings and a parts list for the demonstration board 2 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 INSTRUMENTS www ti com Description 1 1 XTH108EVM Parts List XTR108bEVM US and XTR108EVM EU The following documentation and devices provide information regarding Texas Instruments integrated circuits used in the assembly of the XTR108EVM Information regarding these items is available through the TI web site at http www ti com Device XTR108 PC Interface Board XTR108 Sensor Interface Board PC Cable 8 position RJ45 plug to 9 position female DB9 Document Literature Number XTR108EVM Software CDROM Rev 1 0 5 or XTR108DK newer XTR108 Designer s Kit Board Control Software SBOCO026 XTR108 Designer s Kit Source Code SBOCO71 XTR108EVM User s Manual SBOU014 XTR108 Quick Start System Reference Guide SBOA106 XTR108 Data Sheet SBOS187 1 2 XTH108 Designer s Kit Board Control Software Operating System Compatibility The board control software runs on Microsoft Windows Win98 Win2000 and WinXP Additionally the regional PC settings should be set to English United States with the decimal symbol set to a period More information on issues related to changing regional settings is given in the Regional Settings section Contact the factory for compatibility with other operating systems 2 Description The XTR108EVM key hardware consists of two boards se
5. 16 XTR108EVM Board Control Software Find Resistors Tab uususus 18 17 XTR108EVM Board Control Software Calibration Tab Lsuesusesususue 19 18 XTR108EVM Board Control Software Registers 1 3 4 5 Tab esses 20 19 XTR108EVM Board Control Software Registers 6 7 8 9 Tab esee 2 20 XTR108EVM Board Control Software Registers 10 11 12 13 14 15 Tab 22 21 XTR108EVM Board Control Software Calc CRC Box Checked 2d 22 Noise on DCR010505 DC to DC Converter leessseesseeeeseeesee eene 24 23 Discrete Charge Pump on Sensor Interface Board uuuuuuuuuuuess 25 24 XTR108EVM Board Software Run Time Error eeeeeuueeeeeeeeeeeeeeeee 26 25 Control dla Bc nep PR ET 26 Windows Control Panel 1545 55 55 9 nonton ernannt ru raa ren aevo et e SEPA UMEN V Ree 27 27 Regional and Language Options Window ceeeeeererI He 28 28 Regional and Language Options Advanced Tab View suueuseesse 28 29 Regional and Language Options Advanced Tab Language for Non Unicode Programs Dialog e p 29 30 Restart PO Dialog D 30 31 Regional and Language Options Window Regional Options Tab 30 32 Regional and Language Options Window Regional Options Tab Customize Regional Opt
6. E 45 ROZ RXDT RB2 53 6 R5IN R50UT i RBS 5 26 TIN MCLRNp p RB4 Se A T3IN BERI ca 21 3 b4 TAIN T20uT 1 z A EN T30UT i RBs RBO INT 1uF S SHUTDOWN T40uT vec 28 eee a Zz Cte 14 18 caj 11 a we 4 RCO TIOSO TICKI E i5 EE tor Bemuiccieen 12 C9D17 OPTO ISO Bic 68 vey RC2 CCR 13 C22 15 Vs XTR TP15 TP7 TPS SN75LBC241 ul RCA SDI SDA ic e RCS SDO d 1 k cary tuF 8 8 c3 vec H 4 PICT6F876 Us J4 E 01uF VOS F 27 RJ T2A R T1B E DIA 3 D2A R T2B 2 D2B 1 D3 D2 2 DIB ENEP IODE 26 i 12 V ISO GND GND ee ISOT50AU OluF 4 vec RB d J5 01k p l i 1 00 g 1a 4 2 sa gt wt s a 3A 1Y MIESE Ay 4 8 too B 40E 9 3 0E 9 7 2 0E 4A L 8 TA SBOUO 14A July 2002 Revised October 2005 Figure 37 XTR108EVM PCI Interface Board XTR108EVM Designer s Kit for XTR108 35 Wy TEXAS INSTRUMENTS www ti com
7. English United Kingdom English Zimbabwe Estonian French Belgium French Canada French France French Luxembourg French Monaco French Switzerland FYRO Macedonian Galician German Austria German Germany German Liechtenstein German Luxembourg German Switzerland Greek Hungarian Icelandic Indonesian Italian Italy Italian Switzerland Japanese Kazakh Korean Figure 29 Regional and Language Options Advanced Tab Language for Non Unicode Programs Dialog 5 Click on Apply You will be instructed to restart your computer See Figure 30 Restart your computer and repeat Step 1 and Step 2 above then continue with Step 6 SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 29 435 TEXAS INSTRUMENTS www ti com General Operating Tips Regional Options Languages Advanced Language for non Unicode programs This system setting enables non Unicode programs to display menus and dialogs in their native language It does not affect Unicode programs but it does apply to all users of this computer Select a language to match the language version of the non Unicode programs you want to use English United States Code page conversion tables 10001 MAC Japanese 10002 MAC Traditional Chi 10003 MAC Korean Do you want to restart your computer now C 10004 MAC Arabic C 10005 MAC Hebrew Change Regional Options You
8. Exceeding the specified input range may cause unexpected operation and or irreversible damage to the EVM If there are questions concerning the input range please contact a TI field representative prior to connecting the input power Applying loads outside of the specified output range may result in unintended operation and or possible permanent damage to the EVM Please consult the EVM User s Guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2005 Texas Instruments Incorporated SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 37 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries TI reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control
9. Install the EVM control software using this procedure e The XTR108EVM Board Control Software is installed in the normal Microsoft Windows manner Close all other applications From Start button on the Windows taskbar select Run e Inthe Run dialog box type d setup where dis the letter designating the CD ROM drive on the PC that contains the XTR108EVM Software CD ROM e Follow the on screen prompts to install the software e To remove the XTR108bEVM application use the Windows Control Panel utility Add Remove Software 8 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com 5 4 Software Start up Initial Setup and Check Out Start the XTR108EVM Board Control Software by clicking on the XTH108 DK Board Interface under Start All Programs XTR108 Designer s Kit as shown in Figure 6 m netDeploy 4 5 m Real Internet Explorer Sarti G Microsoft Office oj 3 Windows Explorer lr TN3270 Web fs Adobe Reader 6 0 Fi Winzip Hi Keil uVision2 A NetMeeting EJ XTR108 3 Outlook Express a Microsoft Office Pow E Microsoft Office Excel Microsoft Visual Stud y MPLAB IDE bE Tina TI All Programs 5 T Mathsoft Apps F1 Protel 99 SE E Snaottz2 m TFP M Microsoft Office Tools e Powertoys for Windows XP e Roxio Easy CD Creator 5 Symantec Client Security E TI COMM for Windows
10. XTR108 Designer s Kit Then press Write XTR Write EEPROM and Read XTR The main window appears as illustrated in Figure 12 14 XTR108EVM Designer s Kit for XTR108 SBOU014A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com i Texas Instruments XTR108 EVM Application File EEPROM Setup View Help D Registers 0 3 4 5 Calibration XTR108 Coarse Excitation DAC Excitation UE AG Linearization DAC 65 Fault Monitor Config State RO 0 PGIA Erin 03 Registers 6 7 8 9 SPI Interface Disable Read Coarse Zero fg DAC FC 9 Fine Zero DAC 01 Reet a Ly 12100 2 Y Current b Amp 6 50 es Limits 7F OLA AAD Tn Ryy 934 2 Initial Setup and Check Out Registers 10 11 12 13 14 15 Current Values Iref 07808785 uel PGA Gain 50 00 VN Izero f 1 52727 ma G Lin Coeff 4 00E 04 AN Read XTR i iv Write XTR Cale CRC Read EEPROM Write EEPROM Figure 12 Main Window with XTR108_DK_Test txt file open SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 15 i INSTRUMENTS www ti com Initial Setup and Check Out Connecting a 20090 resistor across the RTD terminal T1 should produce a 20mA output See Figure 13 w R21 OE TO RZ4 m Go T sent OEEO Bae OEEO Bio OEEO cS Om TO RCM 9999 T1 w ul O Ucm o RZ o RTO oj Us B 1o 3 1
11. isolation to allow the ground reference of the digital drive circuitry for the SPI signal to float to the ground reference of the XTR108 This configuration prevents ground contentions The problem with this scheme is that the dc to dc converter is very noisy This problem can be circumvented by shutting down the dc to dc converter when it is not being used The dc to dc converter is turned on only during communications It is possible however to get the dc to dc converter to run in a continuous mode if power is cycled on the XTR108 EVM and communications have not been re established In this case noise will feed through to the sensor board and can significantly affect the performance of the XTR108 Figure 22 shows how the noise feed through appears on an oscilloscope Keep in mind that this feed through is normally not a problem Tek 200MS s m 102 Acqs i A 5 8655 5 915ps Dern porn potter TW 50 0mVv M 250ns Chi 7 48mV s Apr 2005 09 49 05 Figure 22 Noise on DCR010505 DC to DC Converter 72 Charge Pump On the Sensor Interface Board a simple discrete charge pump can be used to generate a small negative voltage When the XTR108 is in Voltage Output mode a negative voltage must be applied to the XTR108 lin pin to prevent the input offset voltage of the XTR108 current output stage from turning on the output stage This circuit is a convenient way of providing this negative voltage The input for the charge pump is the cl
12. must restart your computer before the new settings will take effect wu Default user account settings C Apply all settings to the current user account and to the default user profile Figure 30 Restart PC Dialog 6 In the Regional and Language Options pop up window click on the Regional Options tab as shown in Figure 31 Regional and Language Options Regional Options Languages Advanced Standards and formats This option affects how some programs format numbers currencies dates and time Select an item to match its preferences or click Customize to choose your own formats v Customize Samples Number 123 456 789 00 Currency 123 456 789 00 z Time 16 08 31 Short date 2004 06 21 Long date 37 czerwca 2004 Location To help services provide you with local information such as news and weather select your present location United States v Figure 31 Regional and Language Options Window Regional Options Tab 30 XTR108EVM Designer s Kit for XTR108 SBOU014A July 2002 Revised October 2005 4i TEXAS INSTRUMENTS www ti com General Operating Tips 7 Click on the Customize button in the Regional Options tab of the Regional Language Options pop up window See Figure 32 Customize Regional Options Numbers Currency Time Date Sample Positive 123 456 789 00 Negative 123 456 789 00 Decimal symbol No of digits after decimal
13. 0 ilfiuz1 1 oii a 2002 Figure 13 Resistor for 20mA Output Connecting a 100Q resistor across the RTD terminal T1 should produce a 4mA output See Figure 14 Bus eT p 9 D RZ4 3 Om MO mno 00090 O Vem O RZ o RTO Oo Us Ir Io ipmuz1 o Bv Smit n A4 ul 4 E gt i n ul 1000 Figure 14 Resistor for 4mA Output 16 XTR108EVM Designer s Kit for XTR108 SBOU014A July 2002 Revised October 2005 35 TEXAS 6 1 INSTRUMENTS www ti com Software Overview 6 Software Overview Summary Tab The summary tab see Figure 15 allows access to the key registers through an intuitive graphical interface This screen also allows you to change the values of the external resistors that are used to select the range over which the XTR108 will calibrate RTDs Note that the configuration of the external resistors will be saved in a file when the software is closed for user convenience This tab also has four buttons that conveniently allow the displayed registers to be written to or read from the XTR108 and the XTR108 EEPROM Texas Instruments XTR108 EVM Application File EEPROM Setup View Help Dig d Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 Find Resistors Current Values XTR108 il Iref Excitation SPI Interface po 0 4323752 ma DAC CRC PGA Gain Excitation Disable Read fgg 6 25 v YA Izero s SERA Coarse Zero Linearization e 4 116226 ma DAC
14. 0e 00 00 AN Read XTR iv Write XTR Calc CRC Read EEPROM Write EEPROM Figure 8 Software Start up Wrong COM Port SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 11 435 TEXAS INSTRUMENTS www ti com Initial Setup and Check Out 12 4 Texas Instruments XTR108 EVM Application Dic Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 C FidResstos Current Values XTR108 Coarse lref Excitation 0 3683834 ma DAC T DE DF PGA Gain ine 4 VA Excitation xtr108 250 xl ssi lzero Linearization a 3 380244 ma vc ns amp Ein Coeff E Fault Monitor griis 4 37E 04 AM Config eee 05 Read XTR L Write XTR I cnc Read EEPROM Write EEPROM Figure 9 Software Start up General Communication Problem Click on OK in the pop up window shown in Figure 8 or Figure 9 Verify that the power and RS 232 cables are connected If all connections are secure you may need to select a different COM Port To change the COM port click on Setup in the Main Window Menu Select the Communication Setup option from the Setup menu A new pop up window will appear as shown in Figure 10 Select the serial port where the board is connected then click OK XTR108EVM Designer s Kit for XTR108 SBOU014A July 2002 Revised October 2005 35 TEXAS INSTRUMENTS www ti com Initial Setup and Check Out 48 Texas instruments XTR108 EVM Applica
15. 11111111 Write XTR Write EEPROM Figure 20 XTR108EVM Board Control Software Registers 10 11 12 13 14 15 Tab 22 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 35 TEXAS INSTRUMENTS www ti com Software Overview Register 15 The checksum is computed automatically when any register is changed provided that the Calculate CRC box is checked in the Summary tab If a checksum error is detected the XTR108 programs itself to the lowest under scale error level See Figure 21 Texas Instruments XTR108 EVM Application File EEPROM Setup View Help DE ad Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 Current Values XTR108 Coarse il ref Excitation SPI Interface po 0 4323752 We DAC EE FF PGA Gain Excitation Disable Read Ul 6 25 e VN Coarse Zero Izero Linearization 3 4 116226 ma DAC DAC 00 00 P Fault Monitor Fine Zero picis D DOE 00 AN Config 00 State RO 00 G Lin Coeff Current UP 00 did 5 95 Limits 00 Write v EEPROM SUA A AU In Ryy 934 Q Figure 21 XTR108EVM Board Control Software Calc CRC Box Checked SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 23 D TEXAS INSTRUMENTS www ti com General Operating Tips 7 General Operating Tips 71 DC to DC Converter On the PC Interface Board see Figure 37 a dc to dc converter is used in conjunction with optical
16. 2 13 14 15 XTR108 Coarse Excitation DAC Fine Excitation DAC Linearization DAC D8 Fault Monitor Config EIU 05 DS 01 Summary Find Resistors Current Values il ret SPI Interface 0 3683834 ma EE DF PGA Gain Disable Read 12 50 v YA Izero Coarse Zero e 32 380244 ma DAC FC G Lin Coeff Fine Zero Reference 4 37E 04 AN Read XTR v are Write XTR cac enc Amp G 50 Read Te EEPROM Limits ZF Write vl EEPROM SUA AZ Tn Rip 9340 Q Figure 7 Software Start up Main Window and Initial Program View XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com Initial Setup and Check Out 5 6 Software Board Communication Setup Manual COM Port Setup On initial software startup if the correct COM port on the PC is not selected automatically then the first screen will look like Figure 8 or Figure 9 If you are getting a different error your problem could be related to the PC specific regional settings More information on regional settings is given in the Regional Settings section 4 Texas Instruments XTR108 EVM Application Dic Registers 0 3 4 5 Registers 6 7 8 9 Current Values Iref 0 428752 ma PG Gain 6 25 v vv Invalid port number E MSComm lzero UTC frmMDIMain startCommPort 4116226 ma frmMDIMain sendCommand ME 00 G Lin Coeff ference fO0
17. 35 TEXAS User s Guide INSTRUMENTS SBOUO14A July 2002 Revised October 2005 f I From Texas Instruments XTR108 EUM PC Interface PCB XTR108EVM Designer s Kit for XTR108 a ME Burr Broun Products From Texas Instruments XTR108 EUM mT mp S6 do aiea Emi ezo Complete evaluation tool for the XTR108 e XTR108 hardware Designer s Kit Evaluate XTR108 and User s RTD Fully configurable e Software control for Designer s Kit ONoOoRWD o Program XTR1068 for evaluation Program XTR108 and User s RTD in final module Calibrate most types of RTDs over wide temperature ranges Software tool helps to select resistor values Contents ITROQDUCUION cco tierce e 2 D sciipiloN ee E 3 XTR108 Sensor Interface Board Overview eeeeessleeeeee een nnn nnn nnn 4 XTR108 PC Interface Board Overview ceeeseesseeeee een nennen nnn nnn nnn 6 Initial Setup ANd CHECK OUT sicccsiccscintiecs cite ssena a pocewtat daietnaien cits 7 Software OVervieW sacincacetdewisivanccivevavaemeatinewacedscemareedudinecenamnbeninemeeeanamemecec 17 General Operating TIDS eneeui eeu uiuicienin ee ninieeieen uunc ciens minis mate allai nicis nicis gi mies 24 XTR108EVM PC Cable Drawing eesseeeeen n II n I nm 34 Schemat Siesoo ornoa a inate EEE E E E aA EE Na 34 Windows is a trademark of Microsoft Corporation SPI is a trademark of Motorola Inc All trademarks are the property of th
18. Digit grouping symbol i Digit grouping 123 456 789 Negative sign symbol E Negative number format EA al Display leading zeras 07 List separator Measurement system M etric Digit substitution None Figure 32 Regional and Language Options Window Regional Options Tab Customize Regional Options Dialog 8 In the Customize Regional Options dialog under the Decimal symbol option select from the drop down menu as shown in Figure 33 Click OK in the Customize Regional Options window which returns you to the Regional and Language Options Window as shown in Figure 34 Notice that under the Number section in this window the decimal separator of the number displayed is shown as a period instead of its original setting as comma SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 31 General Operating Tips 35 TEXAS INSTRUMENTS www ti com Customize Regional Options Numbers Currency Time Date Sample Positive 2345678800 Negative 12345678900 Decimal symbol Eoo ST v No of digits after decimal Digit grouping symbol RI Digit grouping 123 j456 783 u v Negative sign symbol 44 vl Negative number format Display leading zeros 0 7 hes List separator v Measurement system Metric i i hell Digit substitution None v Figure 33 Regional and Language Options Window Regional Options Tab Cust
19. EB ma 4 Burn CD amp DVDs with Roxio PGA309 DK Board Inf Internet Explorer s Remote Assistance E Windows Journal Viewer e Windows Media Player D Windows Messenger Wh Windows Movie Maker m TN3270 HostExplorer KT MediaFACE II Fi Microchip MPLAB FT Microchip MPLAB IDE an pdfFactory Pro ir spcc ly Microsoft PowerPoint Viewer 97 ET Microsoft NET Framework SDK v1 1 Ff Microsoft Visual Studio NET 2003 Er P CAD 2004 Viewer Fi Texas Instruments TMPXXX Designer s Kit E TMP122k5VP Demo with Excel fg XTR108 Fr xtr108 demo l an xtr 108 Spreadsheet demo I Hpladjust OH Keil uVision2 Nf Keil uvision3 Fi BUF16820 I Google Desktop Search Fi HHD USB Monitor ffr Tera Term Pro RealPlayer Figure 6 XTR108bEVM Board Control Software Start up SBOUO 14A July 2002 Revised October 2005 IP VR DUC gt mm XTR108 Microsoft Out XTR108EVM Designer s Kit for XTR108 9 Initial Setup and Check Out Default Software Board Communication Setup On initial software startup a main window appears with a smaller pop up window in the middle of the main window If the initial software start up does not look like Figure 7 then proceed directly to Section 5 7 5 5 10 Texas Instruments XTR108 EVM Application File EEPROM Setup View Help n 4 TEXAS INSTRUMENTS www ti com Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 1
20. LiveUpdate settings 3system See information about your computer system and change settings For hardware performance and automatic updates ij systems Management Configures this computer to be managed by Systems Management Server il Taskbar and Start Menu Customize the Start Menu and the taskbar such as the types of items to be displayed and how they should appear 82 User Accounts Change user account settings and passwords for people who share this computer W Wireless Link Configure infrared File transfer image transfer and hardware settings Customize settings For the display of languages numbers times and dates Figure 35 Windows Control Panel 10 Start the XTR108DK Control Software All features of the XTR108DK software should now work correctly SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 33 D TEXAS INSTRUMENTS www ti com XTR108EVM PC Cable Drawing 8 XTR108EVM PC Cable Drawing Figure 36 shows the recommended cabling for the XTR108EVM BACKSHELL 1 CABLE 1 CONNECTOR 1 DB9 Female RJ45 Plug Cable Back Side Solder Cup Ridge Down View No Connection RD TD DTR OND XTR108 EVM DSR PC Cable Drawing RTS CTS No Connection oo o0o00cA5conmc THG January 16 2004 RJ45 Plug w Cable 8 Conductor Modular Cable Grey Orange Black Red Green Yellow Blue Brown Figure 36 XTR108EVM Cables 9 Schematics T
21. Y OBLIGATIONS SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER TI IS NOTIFIED OF THE POSSIBILITY OR NOT TI currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive TI assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein User agrees to read the EVM User s Guide and specifically the EVM warnings and Restrictions notice in the EVM User s Guide prior to handling the EVM and the product This notice contains important safety information about temperatures and voltages It is user s responsibility to ensure that persons handling the EVM and the product have electronics training and observe good laboratory practice standards By providing user with this EVM product and services TI is NOT granting user any license in any patent or other intellectual property right EVM WARNINGS AND RESTRICTIONS The PC Interface Board dc supply J2 input range is 7V to 10V The loop supply T2 input voltage range is 5 5V VD1 when in voltage mode When operating in Current Loop Output mode you must consider the power dissipated in the external transistor and the operating temperature of the transistor in order to determine the maximum loop voltage and current This calculation is determined in the XTR108 data sheet
22. adboarding as desired are provided for a given application Most of the surface mount components have pin sockets associated with them These pin sockets allow the replacement of a surface mount component with a through hole component SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 5 3 TEXAS INSTRUMENTS www ti com XTR108 PC Interface Board Overview 4 1 4 2 4 3 4 4 The pin sockets provide good contact with the leads of a component without solder enabling quick reconfiguration of the board for many different XTR108 designs See Figure 3 0 36 0 56 014 022 Fr 2 54 MIN 100 Through hole lead CONTACT PT makes contact to pin socket with spring action 6 27 247 MAX PIN LENGTH Figure 3 Pin Socket Mechanical Description XTR108 PC Interface Board Overview See the XTR108 PC Interface Board schematic Figure 37 for additional information Input Output The connections from the XTR108 PC Interface Board to the XTR108 Sensor Interface Board are provided through J4 on the PC Interface Board RS 232 Interface and PIC16F876 Microcontroller The PIC16F876 Microcontroller U5 is used to perform the SPI communications with the XTR108 The PIC firmware is factory programmed however this source code is downloadable from the web for the benefit of engineers who want to develop custom firmware RS 232 communications are initiated via the serial po
23. and motion speed El netDeploy Launcher Changes settings for the netDeploy Launcher Network Connections Connects to other computers networks and the Internet Phone and Modem Options Configure your telephone dialing rules and modem settings 0 Power Options Configure energy saving settings For your computer dgPrinters and Faxes Shows installed printers and fax printers and helps you add new ones QuickTime Configures QuickTime software and hardware components E Regional and Language Options Customize settings For the display of languages numbers times and dates Remote Control Configures remote control settings Sy Scanners and Cameras z D scanners and cameras scheduled Tasks certiores remote control settings automatically Sounds and Audio Devices Change the sound scheme For your computer or configure the settings for your speakers and recording devices a Speech Change settings for text to speech and for speech recognition if installed isymantec LiveUpdate This applet allows you to configure your LiveUpdate settings XJ system See information about your computer system and change settings for hardware performance and automatic updates Systems Management Configures this computer to be managed by Systems Management Server il Taskbar and Start Menu Customize the Start Menu and the taskbar such as the types of items to be displayed and how they should appear SUser Accounts Change user account settings and passwords for p
24. ay Texas Instruments XTR108 EVM Application File EEPROM Setup View Help Dig d Calibration Find Resistors Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 XTR Registers 0 3 4 5 D7 D6 D5 D4 D3 D2 D1 DO EM FE BE tee d at b Register 1 pm o fo jJ o jo jo jo o oo Status Write Reg 0 Continuous Reg 4 Reserved Reserved Reserved Reserved Reserved Reserved Reserved EE Read Write STR Control Register 2 ss o Write EEPROM FD Vo Undith Io Undith Ruiz6 25kokm Vo Ourth To Ovrth Rviz 6 25kohm Enable 475m 38m 2 5625 V 205m Figure 18 XTR108EVM Board Control Software Registers 1 3 4 5 Tab XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com Software Overview 6 5 Registers 6 7 8 and 9 Register 6 Sets the PGIA gain This register is set typically during calibration Register 7 Allows configuration of the alarm register This register determines if the XTR108 will go into over scale or under scale for various fault conditions Register 8 Controls the input multiplexer This feature is set typically during calibration Register 9 Controls the Inge multiplexer This feature is set typically during calibration See Figure 19 for an example of the tab window display Texas Instruments XTR108 EVM Application File EEPROM Setup View Help Calibration Find Resistors Registers 0 3 4 5 Reg
25. d Pinter Extreme Graphics Control the graphics hardware features of your system internet Options Configure your Internet display and connection settings Sakeyboard Customize your keyboard settings such as the cursor blink rate and the character repeat rate mail Microsoft Outlook Profiles jMouse Customize your mouse settings such as the button configuration double click speed mouse pointers and motion speed fI netDeploy Launcher Changes settings For the netDeploy Launcher e Network Connections Connects to other computers networks and the Internet s Phone and Modem Options Configure your telephone dialing rules and modem settings power Options Configure energy saving settings for your computer SPrinters and Faxes Shows installed printers and Fax printers and helps you add new ones QuickTime Configures QuickTime software and hardware components KJ Regional and Language Options Customize settings for the display of languages numbers times and dates E Remote Control Configures remote control settings Sy Scanners and Cameras Add remove and configure scanners and cameras EI Scheduled Tasks Schedule computer tasks to run automatically Sounds and Audio Devices Change the sound scheme for your computer or configure the settings For your speakers and recording devices 3X Speech Change settings For text to speech and for speech recognition if installed P Symantec LiveUpdate This applet allows you to configure your
26. d October 2005 XTR108EVM Designer s Kit for XTR108 25 i INSTRUMENTS www ti com General Operating Tips 7 4 26 Regional Settings Problem In some European PC systems an error is reported when the XTR108DK Control Software is started as illustrated in Figure 24 i Texas Instruments XTR108 EVM Application Registers 0 3 4 5 Registers 6 7 9 9 Registers 10 11 12 13 14 15 Summary r Current Values XTR108 Coarse lref Excitation SPI Interface 0 4929752 ma DAC crc rr PG Gain Fine Fr VN Excitation xtr108 6 25 DAC lzero Linearization Iref must be between 3 4 116226 ma 0 2837 ma and 0 7023ma G Lin Coeff 0 00E 00 AN Read XTR iv Write XTR Calc CRC Read EEPROM Wiite EEPROM Figure 24 XTR108EVM Board Software Run Time Error Cause This error Runtime Error 13 Type Mismatch Error is usually caused by the decimal representation of non English language computers which use a comma instead of a period for the decimal separator that is 100 89 represented as 100 89 Solution PC unique regional settings must be changed in two different places on the specific PC system For Windows XP or NT you must be logged on as an Administrator or a Member of the Administrators Group in order to complete this procedure 1 From the Windows Start Menu select Control Panel See Figure 25 The Control Panel opens in a new window as shown in Figure 26 XTR108EVM Desi
27. dy THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY TI TO USER AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY FITNESS FOR ANY PARTICULAR PURPOSE OR NON INFRINGEMENT TI shall have no obligation to defend any claim arising from the EVM including but not limited to claims that the EVM infringes third party intellectual property Further TI shall have no liability to user for any costs losses or damages resulting from any such claims User shall indemnify and hold TI harmless against any damages liabilities or costs resulting from any claim suit or proceeding arising from user s handling or use of the EVM including but not limited to i claims that the EVM infringes a third party s intellectual property and ii claims arising from the user s use or handling of the EVM TI shall have no responsibility to defend any such claim suit or proceeding User assumes all responsibility and liability for proper and safe handling and use of the EVM and the evaluation of the EVM TI shall have no liability for any costs losses or damages resulting from the use or handling of the EVM User acknowledges that the EVM may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the EVM it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE USER S INDEMNIT
28. e Figure 1 the XTR108 Sensor Interface Board and the XTR108 PC Interface Board The XTR108 Sensor Interface Board contains the XTR108 an external SOIC EEPROM and several jumpers for ease of bridge sensor configuration The XTR108 PC Interface Board contains an RS 232 serial interface a PIC16F876 Microcontroller a dc to dc converter and optical isolation circuitry SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 3 3 TEXAS INSTRUMENTS www ti com XTR108 Sensor Interface Board Overview PC Interface Power 7V to 10V bm 3 1 3 2 3 3 3 4 Amplifier XTR108 EVM SENSOR PCB XTR108 XTR108 EVM PC Interface PCB Serial port cable from PC TO RTD Figure 1 XTR108EVM Typical System Set up XTR108 Sensor Interface Board Overview See the XTR108 Sensor Interface Board Schematic Figure 38 for additional information Input Output The connections from the XTR108 Sensor Interface Board to the XTR108 PC Interface Board are provided through J1 on the sensor interface board a five position plug Jumper Configuration JUMP1 JUMP2 JUMP3 JUMP4 JUMP5 JUMP6 and JUMP7 allow flexibility in the configuration of the connection to an RTD Specifically the jumpers can be used to place the XTR108 into voltage output mode or current output mode XTR108 and E
29. eir respective owners SBOU014A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 1 i TEXAS INSTRUMENTS www ti com Introduction List of Figures 1 XTR108EVM Typical System Set Up eeeeeeeseeseeeeeennn enne nenne 4 2 XTR108EVM Sensor Interface Board Filter Configuration eese eese 5 3 Pin Socket Mechanical Description ceeceeee eee eee eee eee eee e eee m He 6 4 XTR108EVM Sensor Interface Board Factory Jumper Settings Fi 5 Hardware Setup Initial Checkout ecu ratam R rn a E E TA NIKE tUi 8 6 XTR108EVM Board Control Software Start Up ccseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneeees 9 7 Software Start up Main Window and Initial Program View e eeeeeeeeee 10 8 Software Start up Wrong COM Port ssesseeseeeseene nnnm emen nen 11 9 Software Start up General Communication Problem uuuuuuuusuu 12 10 COM Port Pop up Dialog Window ceeee eee e eee eee ee ee enna HII 13 11 Load Set p Pop p Dialog sissen e ner tede erano ma cad reu u e vua vxx e ex Rav deeded 14 12 Main Window with XTR108 DK Test txt file OD N seeceeeeee eee neces eeeeeeeeeeeee 15 13 Resistor tor ZOMA Output og noia eus eoe nte noo ra s nia E E aE E 16 14 Resistor for AMA QUU sccctssoseiostbeweinitiadgied a c ide eene ies de P EA 16 15 XTR108EVM Board Control Software Summary Tab cene 17
30. eople who share this computer V Wireless Link Configure infrared file transfer image transfer and hardware settings zm Customize settings For the display of languages numbers times and dates Figure 26 Windows Control Panel SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 27 35 TEXAS INSTRUMENTS www ti com General Operating Tips 2 Select Hegional and Language Options in the Control Panel A new pop up window Regional and Language Options appears as Figure 27 shows Regional and Language Options Regional Options Languages Advanced Standards and formats This option affects how some programs format numbers currencies dates and time Select an item to match its preferences or click Customize to choose your own formats Samples Number 123456 789 00 Currency 123455 789 00 zt Time 1 6 08 31 Short date 2004 06 21 Long date 21 czerwca 2004 Location To help services provide you with local information such as news and weather select your present location United States Figure 27 Regional and Language Options Window 3 Click on the Advanced tab in the Regional and Language Options dialog The pop up window will change as shown in Figure 28 Regional and Language Options Regional Options Languages Advanced Language for non Unicode programs This system setting enables non Unicode programs to display men
31. ference with radio communications in which case the user at his own expense will be required to take whatever measures may be required to correct this interference EVM TERMS AND CONDITIONS Texas Instruments TI provides the enclosed Evaluation Module and related material EVM to you the user you or user SUBJECT TO the terms and conditions set forth below By accepting and using the EVM you are indicating that you have read understand and agree to be bound by these terms and conditions IF YOU DO NOT AGREE TO BE BOUND BY THESE TERMS AND CONDITIONS YOU MUST RETURN THE EVM AND NOT USE IT This EVM is provided to you by TI and is intended for your INTERNAL ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY It is provided AS IS and WITH ALL FAULTS It is not considered by TI to be fit for commercial use As such the EVM may be incomplete in terms of required design marketing and or manufacturing related protective considerations including product safety measures typically found in the end product As a prototype the EVM does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may not meet the technical requirements of the directive Should this EVM not meet the specifications indicated in the EVM User s Guide it may be returned within 30 days from the date of delivery for a full refund of any amount paid by user for the EVM which user agrees shall be user s sole and exclusive reme
32. gner s Kit for XTR108 SBOU014A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com General Operating Tips Wi MSN Explorer __ My Documents x MSN Explorer My Recent Documents gt C3 Windows Explorer TX Favorites b a Launch Microsoft Outlook vf 5 My Computer PGA309 DK 5 Tina J My Network Places Shortcut to Visio exe E Control Panel i Shortcut to EXCEL EXE 22 Set Program Access and Shortcut to WINWORD EXE Defaults W Notepad e Connect To Is Adobe Reader 6 0 Printers and Faxes W Paint ESP 2 Q9 Help and Support Shortcut to POWERPNT EXE Search All Programs gt IT Run E Undock Computer AL off Shut Down Figure 25 Control Panel Selection amp Control Panel DAR File Edit View Favorites Tools Help ae gt 5 JO search Wey Folders y LR AC id ily g F G Control Panel Addre Name Comments As Game Controllers Add remove and configure game controller hardware such as joysticks and gamepads HCL Inetd HCL Inetd E intelR Extreme Graphics Control the graphics hardware features of your system HP Internet Options Configure your Internet display and connection settings SgKeyboard Customize your keyboard settings such as the cursor blink rate and the character repeat rate Mail Microsoft Outlook Profiles 05 Mouse Customize your mouse settings such as the button configuration double click speed mouse pointers
33. han RTD Type Min Temp MaxTemp A B Ohms degC degC E 1 m a TAM X E x Ls x 100 200 850 3 9083E 3 5 7750E 7 4 1835E 12 Resetto PT100 2 100 0 400 3 9083E 3 5b 7750E 7 4 1835E 12 3 100 0 125 3 9083E 3 5 7750E 4 1835E 12 4 5 55 125 3 9083E 3 5 7750E 7 4 1835E 12 25 75 3 9083E 3 b 7750E 7 4 1835E 12 Note Enter 0 under RTD Type for unused channels Enter General Info Results Install These Resistors Calculate Mode Current Rzl 187 ohms Rset 12100 ohms asus Rvi 6340 Ohm Rz2 100 ohms Riin 30900 ohms Imax 20 NUN Rz3 100 ohms Rem 475 ohms Imin l4 A Rz4 787 ohms Bus 110 ohms Figure 16 XTR108EVM Board Control Software Find Resistors Tab XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 INSTRUMENTS www ti com Software Overview 6 3 Calibration Tab This tab contains the dialogs that are needed to facilitate the calibration of an XTR108 and an RTD see Figure 17 The Visual Basic software contains an algorithm that uses the entered XTR108 configuration resistor values the temperature range and the measured results to compute the XTR108 register values The calibration algorithm works for both the Current Output mode and Voltage Output mode The Visual Basic source code for this software can be downloaded from the Texas Instruments web site in case you want to adapt this software for production programming of XTR108 modules A fu
34. his section describes the physical characteristics of the XTR108EVM DK Figure 37 illustrates the PCI section of the XTR108EVM Figure 38 shows the Sensor Interface Board portion of the XTR108EVM 34 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 Wy TEXAS www ti com Schematics Ala TP12 9V Power Jack inciso a ug ji u1 C7 TP139 TPi4 4 IN our 2 4 v 2 vs Vrec t otup x Iso Ga end EN 180UH NC Enatie H a GND OVin Erra ul 4 Viso V ISO VW GND Nc cs n s dj L gle REGIONS O1uF 5 our 01uF 22uF ce Ip wo L 2 g SYNC OVout 180uH J2 IP OtuFo us Y DCROT0505P cs 2 Vod vA 9 D O1uF 2 2uF OluF 2 2 vec 9 el CON2 u2 2 9V Power Terminal Sto i IN OUT i EN eta m SN74 NC1G0 GND nc SUF 74 REGOS Vs XTR TP3 TPS 8 J33 7 E ATS rt 14 4 GND g RosscKsc E B 4L vec 22pF S250 B T lt ru x 10 oscacukour rao 2 A E T220 0omHe RB18 RAI Er pa RA2 01uF 5 i 5232 Port M 4 m Fs i RIN g TIN RA5 8 E TPA TF6 2 um PIU 22pF SZ 27 17 22 2 23 ES ROUT 55 H Roemxck RBI R PS RAIN R4OUT
35. ions Dialog scm 31 33 Regional and Language Options Window Regional Options Tab Customize Regional Options Dialog Decimal Symbol Selected 2cceeeeeeeeeeeeeeeeeeeeeeees 32 34 Regional and Language Options Window after Customized Regional Options are KI M 32 35 Windows Control Panel 252r aoo toot ater nit ir tisnie same hurapreetuica a ERE TeR E Ea Nada 33 36 XTRIOSEVM Cable S ineeie aa ETE S a cadences 34 37 XTR108EVM PCI Interface Board sseeesssesssseeesseee eaaa 35 38 XTR108EVM Sensor Interface Board sasssssssssnsnrnnnrrennnnsnnnnnnnnrnnnrnnnnnnnnnnnn 36 1 Introduction The XTR108EVM demonstration board was designed to provide an evaluation and test environment for the XTR108 4 20mA two wire transmitter This document provides the information needed to set up and operate the XTR108 evaluation module EVM For a more detailed description of the XTR108 please refer to the product datasheet available from the Texas Instruments web site at http www ti com Additional support documents are listed in the XTR108EVM Parts List section of this guide Throughout this document the acronym EVM and the phrases evaluation module and demonstration board are synonymous with the XTR108EVM This user s guide includes setup and configuration instructions information regarding operating procedures and input output connections an electrical schematic printed circuit board PCB
36. isters 10 11 12 13 14 15 XTR Registers 6 7 8 a HEX D2 D1 DO a Ed BN Vn High Vn Low Vn Low Vn High Vn OK Vn OK Vn Low Vn High Vp Low Vp High Vp Low Vp High Vp Low Vp High Vp OK Vp OK PGAL PGAL PGAL PGAL PGAL PGAL PGAL PGAL Reg 8 PGA Input Config PGA Input Config R d R d PGA Input ud PGA Vin connected to Vin mene PGA Vin connected to Vin Write XTR Config o fm r e o R p m fo ein lrefB Output Config Reserved Iref amp OutputConfig lrefB connected to Vin Iref amp connected to Vin Esse iE e GR Re T RR rs Reserved Figure 19 XTR108EVM Board Control Software Registers 6 7 8 9 Tab SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 21 3 TEXAS INSTRUMENTS www ti com Software Overview 6 6 Registers 10 11 12 13 14 and 15 Registers 10 to 14 These registers control the various digital to analog converter DAC settings in the PGA309 These features are set typically during calibration See Figure 20 for an example of the tab window display 4 Texas Instruments XTR108 EVM Application File EEPROM Setup View Help Calibration Find Resistors Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 Click on a register to edit Register HEX 10 Fine Iref Adjust 00 00000000 11 Coarse lref Adjust 00 00000000 12 Fine Zero Adjust 00 00000000 13 Coarse Zero Adjust 00 14 Linearization Adjust 00 Read ATR 15 CheckSum FF
37. ll step by step description of how this process works is described in the XTR108 Quick Start System Reference Guide Texas Instruments XTR108 EVM Application File EEPROM Setup View Help Dig ad Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 RTD ohms 0 degC BE ns Excitation SPI Interface Step 1 Initial Calculations oe Temp cre rr dea C Currenl v Disable Read j Min do m4 Coarse Zero Max 200 mA XTR108 Linearization ae e a 00 cac P Fault Monitor Fine Zero desi i lax Te Config 00 M Foo m m IET 0f Step 1 Initial Limits 00 fe Write XTR EA Write MAAA e EEPROM Bigs SESE Ist d Reset t i Calibration Figure 17 XTR108EVM Board Control Software Calibration Tab Eis DO SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 19 3 TEXAS INSTRUMENTS www ti com Software Overview 6 4 Registers 0 3 4 and 5 20 Register 0 The RST feature in Register 0 allows the XTR108 to be reset The checksum error bit indicates whether checksum passed or not Register 3 None of the bits in Register 3 are used Register 4 Allows the user to control the Continuous EEPROM read mode This feature is required if the discrete charge pump is used Register 5 Allows the over scale and under scale limits to be adjusted FD disables the over scale and under scale limits See Figure 18 for an example of the tab window displ
38. nly turned on during communications to the XTR108 Normally the dc to dc converter is disabled and the digital I O is disconnected using a 74HC4066 FET switch U7 Note that the power for the FET switch and its associated optically isolated control signal is derived from the XTR108 This power supply design allows these circuits to function without the power from the dc to dc converter 5 Initial Setup and Check Out 5 1 XTH108 Sensor Interface Board Factory Jumper Settings Confirm and or set the jumpers on the XTR108 Sensor Interface Board as shown in Figure 4 The desired jumper settings are also described in Table 1 oooooooooo TM 15 TDB Te D TP25 0000000000 e oooooooooo 5 f t 5 oooooooooo E F A8 Lh S ee 0000000000 eeu 4 oooooooooo o 0 a Burr Broun Products MEER OR BO From Texas Instruments oooooooooo 08 Un 0000000000 OmMO XTRI E Sensor PCB pa B Dara n OM BO Rev A rozo Scl k 2048 IO reis Bcsi e Dane reze flc S2 a angna wg L iret flv oom if 7022 Bl L r et LI Egi E Iz ce m 1M B F4 n O G Dat aei r3 e 28108 5 2 Bs ma OQ Uo olSclk Ba r2 Iret e og F5 o Bnd B m O li ojesi wari T paz njucc Irozs U T a Iret x dt Ugat e jis gt Us Bj wi Sao 8s io e ee ju Io Bris 2 m Ba 9 4 z Om A Dr Blin Jump P Ors 2 amp E CF 8 a Vo Ers Jump4
39. ock to the XTR108 24 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 INSTRUMENTS www ti com General Operating Tips Figure 23 illustrates the charge pump confiiguration Charge Pump To SCLK pin on the XTR108 C10 R6 330pF 30 1k v Jump7 To lj on the XTR108 gt Figure 23 Discrete Charge Pump on Sensor Interface Board For this circuit to work the XTR108 clock must toggle continuously This toggling can be accomplished by keeping the XTR108 in continuous EEPROM read mode JUMP7 can be used to connect or disconnect an external buffer the clock signal of the XTR108 More information regarding this charge pump is located in the XTR108 data sheet and the XTR108 Quick Start System Reference Guide 7 3 Voltage Output Mode In many applications it is desirable to bypass the FET and connect the XTR108 directly to the power supply This configuration can be completed by positioning jumpers JUMP2 and JUMP3 in the Bypass position Note You must be careful in this mode to not apply an over voltage to the XTR108 The XTR108 maximum supply voltage is 5 5V The voltage drop across D1 reduces the XTR108 supply voltage by approximately 0 7V To get an accurate idea of the XTR108 supply voltage while in this mode you should measure at the Vs pin of the XTR108 TP17 on the EVM SBOUO14A July 2002 Revise
40. omize Regional Options 32 XTR108EVM Designer s Kit for XTR108 Dialog Decimal Symbol Selected Regional and Language Options Regional Options Languages Advanced Standards and formats This option affects how some programs format numbers currencies dates and time Select an item to match its preferences or click Customize to choose your own formats Polish v Customize Samples Number Currency 123456 789 00 2 Time 16 29 20 Short date 2004 06 21 Long date 2 czerwca 2004 Location To help services provide you with local information such as news and weather select your present location United States K Figure 34 Regional and Language Options Window after Customized Regional Options are Selected SBOUO14A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com General Operating Tips 9 In the Regional and Language Options window as in Figure 34 click on OK This closes all pop up windows and returns to the main Control Panel window on the desktop Close this window by clicking on the X in the upper right hand corner of this window as shown in Figure 35 amp Control Panel File Edit view Favorites Tools Help gt 5 Sf Search j Folders Address gt Control Panel Name Comments Game Controllers Add remove and configure game controller hardware such as joysticks and gamepads SP HCL Inetd HCL Inet
41. rt RS 232 on the PC using Visual Basic software The Visual Basic software source code is also downloadable from the web As part of the serial port interface an 75LBC241 U4 is used to translate the RS 232 logic levels to 5V logic levels DC Power DC power 7V to 10V is applied to the XTR108 PC Interface Board through J2 Diode D1 is used to prevent inadvertent damage caused by a reverse polarity connection Regulators U9 and U2 are used to convert the unregulated input power to a regulated 5V DC to DC Converter and Optical Isolation of Digital Signals A DCRO01050 dc to dc converter U1 is used to convert the regulated 5V supply to an isolated regulated 5V supply This isolated 5V supply provides power for all of the optical isolators U6 U3 AND U10 Optical isolation is used to allow the SPI signals to float to the ground reference of the XTR108 lag This configuration prevents possible grounding issues where the loop supply V oop is not a floating supply XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 3 TEXAS INSTRUMENTS www ti com Initial Setup and Check Out One issue with the dc to dc converter is that it has a fairly noisy output voltage The noise is generated by the switching action used to generate the isolated output voltage If this noise is allowed to feed through to the XTR108 it can significantly affect the device performance To avoid this problem the dc to dc converter is o
42. t responsible or liable for such altered documentation Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice Tl is not responsible or liable for any such statements Following are URLs where you can obtain information on other Texas Instruments products and application solutions Products Applications Amplifiers amplifier ti com Audio www ti com audio Data Converters dataconverter ti com Automotive www ti com automotive DSP dsp ti com Broadband www ti com broadband Interface interface ti com Digital Control www ti com digitalcontrol Logic logic ti com Military www ti com military Power Mgmt power ti com Optical Networking www ti com opticalnetwork Microcontrollers microcontroller ti com Security www ti com security Telephony www ti com telephony Video amp Imaging www ti com video Wireless www ti com wireless Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2005 Texas Instruments Incorporated
43. techniques are used to the extent TI deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed TI assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using TI components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in which TI products or services are used Information published by TI regarding third party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice TI is no
44. tion aac Fie EEPROM Setup View Hei Da Registers 0 3 4 5 Registers 6 7 8 9 Registers 10 11 12 13 14 15 Find Resistors Current Values XTR108 Coarse z BEER zi lref Excitation communications Setup 04928752 ma m il Communications Port gt PGA Gain ine T Z ior x 6 25 X D 1a lzero 4 116226 ma G Lin Coeff 0 00E 00 AN Read XTR iv Current k Write XTR Calc CRC Amp Read EEPROM Write EEPROM Figure 10 COM Port Pop up Dialog Window SBOUO14A July 2002 Revised October 2005 XTR108EVM Designer s Kit for XTR108 18 4 TEXAS INSTRUMENTS www ti com Initial Setup and Check Out 5 7 Hardware Check out In the main window click on File Load Setup A pop up dialog window appears as shown in Figure 11 Texas Instruments XTR108 EVM Application IM EEPROM Setup View Help Reset All Load Setup Save Setup Save AS Registers 0 3 4 5 Exit Calibration Look in 2 Desktop X 3 iG My Documents i My Computer XTR108 My Recent My Network Places Documents Projects lis TEMP E dio500 txt led My Computer IE Shortcut to OvenTemperature iB xtr108 setup txt m o A A Ss d e z My Network Files of type Calibration Files t t Pl DEOS Open as read only EEPROM Figure 11 Load Setup Pop up Dialog Select XTR108_DK_setup txt and open this file located in the XTR108EVM Software directory typically C Program Files
45. us and dialogs in their native language It does not affect Unicode programs but it does apply to all users of this computer Select a language to match the language version of the non Unicode Programs you want to use v Code page conversion tables In aai ki 10001 MAC Japanese 10002 MAC Traditional Chinese Big5 10003 MAC Korean C 10004 MAC Arabic C 10005 MAC Hebrew Default user account settings C Apply all settings to the current user account and to the default user profile Cancel Apply Figure 28 Regional and Language Options Advanced Tab View 28 XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 Wy TEXAS INSTRUMENTS www ti com General Operating Tips 4 In the Language for non Unicode Programs section click on the drop down menu arrow and select English United States as shown in Figure 29 If your computer is already configured for English United States as the Language for non Unicode Programs skip to Step 6 Regional and Language Options Regional Options Languages Advanced Language for non Unicode programs This system setting enables non Unicode programs to display menus and dialogs in their native language It does not affect Unicode programs but it does apply to all users of this computer Select a language to match the language version of the non Unicode Programs you want to use English South Africa English Trinidad
46. xternal SOIC 8 EEPROM U1 is the XTR108 for evaluation A 4k bit external SOIC 8 industry standard SPI EEPROM U2 is also included on board Protection and Filtering The XTR108 Sensor Interface Board is configured with components to prevent mis wiring mishaps D1 is used to prevent damage from a reverse polarity connection In some applications it is desirable to bypass the FET transistor Q1 and apply power directly to the XTR108 In this case it is important to be careful not to apply more than the 5V supply Note that in the FET bypass mode of operation the drop across the diode D1 becomes significant XTR108EVM Designer s Kit for XTR108 SBOUO14A July 2002 Revised October 2005 i INSTRUMENTS www ti com XTR108 Sensor Interface Board Overview Input noise filtering of the zero resistor is provided by C1 C5 C9 is used to filter the noise developed on the common mode resistor and a capacitor can be connected directly across the RTD See Figure 2 VINO Vin1 Vin2 VIN3 VINA XTR108 Figure 2 XTR108bEVM Sensor Interface Board Filter Configuration 3 5 Test Points and Miscellaneous Breadboard Area There are several test points including several connections to Iger lagz is common for most XTR108 applications and is provided for ease of measuring analog signals Reserved areas with plated through standard spacing 0 1in holes for miscellaneous proof of concept bre
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