Reading and Creating Calibration Tables for Sensors
Contents
1. cfg file will be downloaded to the Model 6000 and the name for Channel 29 will be changed to MyCernoxTherm USING THE TABLES UTILITY WITH EXTERNAL MEASUREMENT DEVICES Source Channels for External Measurement Devices You can easily use the Tables utility with an external measurement device by adapting the earlier instructions For the adaptation you will use an alternate type of Source channel to send the data to the Destination Channels 1 Follow Steps 1 and 2 in the instructions for J Data tea e zixl estination Channe down loading a calibration table 12 4nalog Sig Input 1 Possible data channels to 13 4nalog Sig Input 2 use are 20 29 53 61 67 93 14 Digital Input Status 2 In Step 3 select a channel such as 1SDiiver1 Curent Tables 4 2 Analog Sig Input 1 instead of a user aa Use the table for this destination chan bridge channel Figure 20 18 Driver 2 Power Edit Curent Table Edit New Table 19 Press Gage Input 3 Follow the remaining instructions as if you g y Map Assistant Apply Cancel were using a user bridge channel to read the measurements Figure 20 Alternate Source channels for sending external measurements to the Model 6000 Special Situations If you would like to explore using the Tables utility for special purposes such as converting and displaying measurement data without sending it through a Source channel i e Source channel will be none or have any other questions please2. 02 System Mag Field 03 Motor Position 04 Bridge 1 Resist 05 Bridge 1 Current O6 Bridge 2 Resist jaa O7 Bridge 2 Current M i Tables F Use the table for this destination chan Map Assistant Cancel Table Editor INPUT OUTPUT Interpolation Input Data no label no label loo B 29763 26 1 4 Output Data 24956 49 15 log a 21328 24 1 6 18509 86 1 Validate Graph 16274 27 1 8 14468 31 19 Send to channel 29 12987 25 9 Send to Model 6000 11755 59 2 1 10719 34 99 lt lt Edit Entries 9837 98 2 3 Savet Disk D 3 ave to Dis one NANNI Var aa Figure 10 The Data Redirect dialog and Table Editor with a calibration table downloaded When you open the calibration table the Tables utility will automatically read it into the Table Editor window as shown in Figure 10 Verify that the resistance values are in the Input column and the temperature values are in the Output column If they are not you must exchange the columns in the original table and open it again see Creating Calibration Tables above When the values have been read correctly you can use the Table Editor options to validate graph or change the scale of the interpolation of the table Because we are measuring temperature we should use log scales for interpolation You also can type data into the table by selecting Manual Entry Mode in the lt lt Edit Entries gt gt popup Figure 5 After you have edited the cali
3. Map 23 Br3 Resist Map 24 Br3Excit Map 25 Br4 Resist Map 26 Br4 Excit Map 27 l Sigl In olt Map 28 l Sig2 In olt MyCermoxTherm IV 16879671 63 Start Acquire Once Close Figure 14 Channel Map 29 renamed as MyCernoxTherm Map 2 Map 28 Map 2g Enter Map 9 Label My CemnosT hern arcel Figure 15 Renaming Map 29 The method for permanently renaming the channel is slightly more complex because you will edit and save the cfg file and download it to the Model 6000 1 Quantum Design Insert the following statement just above the last line in the new cfg file you created in the previous section for examples see Figures 16 and 17 MAP_ID 29 MyCernoxTherm Note Substitute your chosen channel number and file name for Map_ID 29 and MyCernoxTherm Also enclose the new file name in quotation marks and place a semicolon at the end of the statement line _ C X29429 cfg Notepad File Edit Format view Help TABLE 29 2 2 0 29763 276000 1 40000 24956 49000 1 50 569210 14 00000 951 98970 14 50000 922 46480 15 00000 TABLE_ID 29 T2A90335D TBLMODE 29 1 REM e Figure 16 cfg file before making any modifications E x29429 cfg Notepad File Edit Format View Help TABLE 29 2 2 0 29763 26000 1 40000 24956 49000 1 99210 14 00000 951 98970 14 50000 922 46480 15 Of TABLE_ID 29 T2A90335D TBLM
4. such as capacitance from an external instrument to the Tables utility This type of situation is briefly discussed in the last section Data Redirect Dialog Channel Settings Some controls in the Data Redirect dialog box are inactive until later in the procedures Below we focus on the most commonly used controls especially those used when you first start and set up the Tables utility Source This menu box displays the channels and their current data source or mapping Data from the selected Source channel will be directed to the Destination Channel and converted through the calibration table Destination Channel This number refers to the channel that will read the calibration table and display the converted data The channel number is automatically entered into the text box when you click on a channel in the PPMS Data Channels dialog Note that you should only use channels 20 29 538 61 and 69 93 the other channels have been set aside for the system or they are not supported Tables When you click on the Edit New Table button the program will prompt you to open a table from the host computer After you select and open the table the Table Editor section will appear showing the calibration data see Figure 4 The Edit Current Table button is for use when you have loaded and saved a table for a channel and want to use that table again Buttons The Map Assistant button opens the Map Assistant dialog which is used to map Model 600
5. value Using the Tables utility we will designate a user bridge in the Model 6000 that will measure the resistance of an external thermometer validate the thermometer calibration table create and download a cfg file that converts the resistance values to temperatures and map the converted data to another channel 1 Start the Tables utility double click on the TABLES32 exe file located in C QdPpms Tools The PPMS Data Channels Data Source dialog box will open with a list of channels e g 13 Press Gage Input Figure 7 2 Select an Available user bridge channel by double Ze none No clicking one that has a Data Source of none No This channel will be used to read the calibration s mone No a table and display the converted data For this 7 example we selected Channel 29 Redirect Data Refresh Al Exit Important Only map data to Available channels ge channels 20 29 53 61 69 93 unless Quantum Design personnel give you other instructions Figure 7 Channel 29 selected as the data source 4 Application Note 1070 808 Rev B 1 Quantum Design January 3 2006 Reading and Creating Calibration Tables for Sensors When the Data Redirect dialog opens Figure 8 select a Source channel Here we selected 04 Bridge 1 Resist which means that Bridge 1 on the user bridge board will be used to measure the resistance of the Cernox thermometer we have connected Click on the Apply button to set Bri
6. 0 commands e g error to selected channels The Cancel button closes the Data Redirect dialog but leaves the PPMS Data Channels dialog open The Apply and OK buttons become active after any change is made to the settings such as selecting a new Source channel or turning a table on or off by checking the Tables text box Use the table When you click on the Apply button it saves the change and sets the status of the Tabled column for the Destination Channel to On or Off When the status is Off data is not saved to the log file preserving system space The OK button acts the same as the Apply button but it also closes the Data Redirect dialog 2 Application Note 1070 808 Rev B 1 Quantum Design January 3 2006 Reading and Creating Calibration Tables for Sensors Data Redirect Dialog Table Editor As suggested by its name you will use the Table Editor to modify and save the calibration table Subsections of the Table Editor include a readout of the calibration table INPUT OUTPUT controls that allow you to edit and validate the calibration table Interpolation or designate the final location of the data or cfg file Send to channel Send to Model 6000 and four application buttons lt lt Edit Entries Help Save to Disk and Done INPUT and OUTPUT columns These columns display the data columns for the table that you opened The INPUT column contains the measurement data and the OUTPUT column contains the con
7. E 03 156429E 04 B37 8090E 03 55014 5E 03 B907 BE 03 051303 E 03 B33930E 03 e The number of input and output data pairs in a table must be from 3 to 79 i e 3 to 79 rows of data If the table is larger or smaller than that you will be able to read the data into the INPUT and OUTPUT columns and save the tab and cfg files but the Validate utility will not download the cfg file to the Model 6000 e In general the accuracy of the conversion will increase with the number of data points e The program will not extrapolate beyond the values of the table when it is converting data but you can use an lt lt Edit Figure 6 Sample tab delimited calibration Entries command to extrapolate values in the calibration table for a Cernox thermometer table See above thermometer and table by Lakeshore 634559E 05 451094E 03 8177 0E 03 12507 2E 03 97907 3E 03 fe LA LA La a La a a aa ad PPP PP Pd Pt Pst Pl Ae Ae eA FREE FEE JR W fa fe ee on nn ot uw RE RE RE RP BB e The calibration table can be in txt or doc format DOWNLOADING A THERMOMETER CALIBRATION TABLE TO THE MODEL 6000 The following example shows the basic steps for downloading a cfg file created from a calibration table e g Figure 6 from the host computer to the Model 6000 The table is for an external additional Cernox thermometer and reflects its unique calibration values with each resistance value corresponding to a specific temperature
8. ODE 29 1 Map _ID 29 mycernoxTherm REM EE Figure 17 cfg file modified to rename Channel 29 Application Note 1070 808 Rev B 1 January 3 2006 Reading and Creating Calibration Tables for Sensors 2 After you have made your changes save the cfg file to the QdPpms directory on the host computer Next you will use the PPMS Rom Config 32 dialog to download the edited cfg file from the host computer to the Model 6000 3 Open the PPMS Rom Config 32 dialog Figure 18 by clicking on Romcf g32 exe located in C QdPpms Tools PPMS Rom Config 32 Aeleg File Sendte PPS ReadframEPMs Hele Weer intemal controls T ables maps User Catemel Dridges Jinks Di river System Configuration Read Configuration Diag al Configs including above History mead From c ipoms cantigihistary tet Figure 18 PPMS Rom Config 32 dialog box 4 On the toolbar of the PPMS Rom Config 32 dialog Figure 19 select Send to PPMS gt gt Send Config PPMS Rom Config 32 File EEE Read from PPMS Help BEZENE ables maps Any File p hks Driver E Read Configuration D Erase gt hg above Sent config on 7 14 2004 9 56 27 4M from C Documents and Settings PPMS Desktop x29429 cfg Idle C Documents and Settings PPMS Desktopix29429 cfg Lines Sent 5 Figure 19 Send to PPMS dropdown menu 5 A dialog box will open so that you can select the file to download Select the cfg file you edited 6 The
9. OQuantumDesign ll nena j Application Note 1070 808 Reading and Creating Calibration Tables for Sensors The Model 6000 Tables utility TABLES32 exe is used to read and download calibration tables to the Model 6000 and to convert and redirect readings from external instruments The Tables utility is installed on the host computer of every PPMS and copies are included on the software diskettes Here we introduce some basic features of the Tables utility and explain how to use them When you become familiar with the utility you will see that it offers additional options beyond the scope of the current application note Important TABLES32 exe is to be used only with 32 bit applications If your equipment still uses the 16 bit PPMS application you can obtain the 32 bit PPMS application by contacting a Customer Service Representative at Quantum Design OVERVIEW OF THE TABLES UTILITY The Tables utility lets you download calibration tables from the host computer directly into the Model 6000 edit and validate your table assign data input and output channels and save the table for future use You also can use other utilities e g Log Data and GetData in conjuction with the Tables utility so you can view or display the converted data and direct it to a PPMS data file These procedures are especially useful when you are using third party instruments with the system such as additional external thermometers For more information a
10. bout the use of third party instruments refer to Appendix A of the GPIB Commands Manual which is part of the ae PPMS User s Manual Also see Application Note 1070 202 PPMS 32 bit Interfacing Third Party Instruments to the PPMS Environment Tools which is located on our website www qdusa com resources techdocs html Figure 1 PPMS Tools desktop icon THE TABLES DIALOGS Start the Tables utility by double clicking on the PPMS 32 bit Tools desktop icon Figure 1 or on the Tables32 exe file which is located in the C OdPpms Tools directory PPMS Data Channels Dialog When Tables32 exe starts it opens PPMS Data Channels Figure 2 an interactive dialog box that displays a list of channels Chan their mappings Data Source and whether a calibration table is associated with the channel Tabled The channels with none for the Data Source are generally Available for you to use for redirected converted readings Available channels are those numbered 20 29 53 61 and RediectDatal Reteh Q cw 67 93 unless they have already been assigned some are used Idle for PPMS options All other channels are for system functions do not use them unless a service representative Figure 2 PPMS Data Channels dialog gives you other instructions box Quantum Design Application Note 1070 808 Rev B 1 1 January 3 2006 Reading and Creating Calibration Tables for Sensors The Available channels that are also u
11. bration data and validated your table save this version of the table and the associated cfg file onto the host computer e Click on the Save to Disk button and save the file with a tab extension e g cernoxl tab e Click on the Save to Disk button again saving the file with a cfg extension e g cernoxl cfg Quantum Design Application Note 1070 808 Rev B 1 5 January 3 2006 Reading and Creating Calibration Tables for Sensors 11 12 13 Data Redirect The Select Parameters to Add to Configuration File dialog will open Figure 11 so that you can specify the characteristics of the new configuration file Click in the Set table use to ON text box to activate the table Select Parameters to Add to Configuration File Please set the commands you want to add to this configuration file C Documents and Settings PPMS Desktop 429425 _ cig Table Destination Table Use T blmode Data Source Mapdat Set table use to ON Include the data source in the file Channel 29 Set table use to OFF iaBidgeTResst i f Do not include Additional Comment or Command If File Already E sists REM f Append to existing file Mote Deleting the REM can corrupt the file Overwvrite existing file ren Figure 11 Select Parameters to Add to Configuration File dialog Click on the Save button to save the new configuration file After you have saved the files use the controls in the Data Re
12. contact Customer Service at Quantum Design 8 Application Note 1070 808 Rev B 1 Quantum Design January 3 2006
13. dge 1 as the data source for Channel 29 The application will be reflected in the PPMS Data Channels dialog as shown in Figure 9 the Data Source for Channel 29 will change from none to 04 Bridge 1 Resist Note that the Tabled column now reads Yes Off instead of No A 14 19 Press Gage Input Ho 20 HONE Ho 2A HONE No al O4 Bridge 1 Resist res Off 36 HONE No ka Redirect Data Refresh a Exit Idle Figure 9 The PPMS Data Channels dialog with Channel 29 6 10 set up to use Bridge 1 as the data source In the Data Redirect dialog click on the Edit New Table button The program will prompt you to open the appropriate calibration table for the external thermometer If you see popup messages such as Unknown file format when you open the file click on the OK button and continue Data Redirect 2 x Destination Channe E Possible data channels to O1 Sustem Temp use are 20 29 53 61 67 35 O2 System Mag Field O3 Motor Position T ables 04 Bridge 1 Resist 05 Bridge 1 Current O6 Bridge 2 Resist OF Bridge 2 Current Map Assistant Use the table for this destination chan Edit Current Table Edit New Table lea Figure 8 The Redirect Data dialog with the Source channel selected Data Redirect X29429 tbl Destination Channel 23 Possible data channels to use are 20 29 53 61 67 93 none 01 System Temp
14. direct dialog Figure 10 to download the calibration table to the Model 6000 e Click on the Send to Model 6000 button e Verify that there is now a check in the text box next to Use the table for this destination chan Figure 12 If the box is not checked click in it so that the channel will be turned on then click on the Apply button to save the change e Verify that the Tabled column of the PPMS Data Channels dialog says Yes On indicating that there is a calibration table mapped to Channel 29 and it has been activated Figure 13 If the column does not show that the table is On click in the Use the table check box and click on the Apply button again jx i 2 PPMS Data Channels mi Destination Channe X 29 Possible data channels to a ie use are 20 29 53 61 67 93 Data Source Tabled F Sustem Mag Fie 03 Motor Position Table 14 19 Press Gage Input No O4 Bridge 1 Resist W Use the table for this destination chan a 05 Bridge 1 Current l HOHE No PE oo j Edt Cunent Table Edit New Table 28 none No 29 D4 Bridge 1 Resist Yes On Map Assistant Apply Cancel 5 NONE Ho 14 15 16 Figure 12 Turning on the channel Redirect Data fees a Exit Idle Figure 13 Tabled column when a calibration table has been mapped to Channel 29 and activated If you have not already attached the Cernox thermometer to the user bridge do so now Now the system i
15. ou deleted entries from a large calibration table to fit into the Tables utility Note that the Validate utility will not let you send a cfg file to the Model 6000 if there are unequal intervals between readings although it will let you create the tab and cfg files If the Validate utility does not let you download the table or file use the Graph lt lt Edit Entries and Validate buttons to redo the table according to the requirements Send to channel Send to Model 6000 These options allow you to download a cfg file to the Model 6000 click on the Send to Model 6000 button and designate the final location of the converted data if necessary enter the Destination Channel number in the Send to channel text box Buttons The lt lt Edit Entries button opens a popup menu Figure 5 with commands for changing selected cells or rows of the data file To interpolate or extrapolate between readings select an INPUT cell click on the lt lt Edit Entry button and select an interpolate extrapolate option To directly enter values into the table click on the lt lt Edit Entry button and select Manual Entry Mode The Help button opens the Help menu The Save to Disk button saves your changes to the table file and allows you to save files in cfg or tab format to the host computer The Done button exits the Table utility Quantum Design Application Note 1070 808 Rev B 1 ut Ctrl s Copy cket Paste Chrl Delete R
16. ow shift Del dd Mew Fow Manual Entry Mode Ctrl M Extrapolate First F Extrapolate Last F7 Restore Table Fa Table Properties Ctrl P Interpolate Previous Cbrl Alt P Ctrl alk H Shift Ins Interpolate Mest Figure 5 Popup command menu for editing the data table opened by clicking on the lt lt Edit Entries button January 3 2006 Reading and Creating Calibration Tables for Sensors CREATING CALIBRATION TABLES Use the following guidelines when you create the calibration tables that are to be used with the Tables utility e Tobe compatible with the Tables utility the data in the table file must be listed in two columns with the converted P x29429 tbl Notepad EEK values on the left and the raw original data on the right as Resistance shown in Figure 6 When the table is read into the Tables ae Oam utility it reorders the columns so that the raw data values are the INPUT and the converted values are the OUTPUT see Figure 4 Note that you can leave column titles in the table file and there can be more than two columns the program will read only the two columns at the left of the file e The columns of the calibration table must be tab delimited tb1 files or comma delimited ca1 files 97032 0E 04 49564 9E 04 132824 E 04 BJ0980E 04 52742 E 04 44083 1E 04 29872 5E 04 1755596404 07l9s4E 04 83 98 E 05 O81346E 05 4260135E 03 Bo44072E 03 39128KRE 03 9064 99E 05 sLO6s2
17. s ready to measure the resistance of your thermometer and use your calibration table to convert and display the temperature on the selected output channel To direct the data to a PPMS data file use the Log Data utility or GetData command refer to the PPMS User s Manual for more information on these utilities You also can rename a channel in the Log Data dialog by using one of the following methods Application Note 1070 808 Rev B 1 Quantum Design January 3 2006 Reading and Creating Calibration Tables for Sensors RENAMING THE CHANNELS OF THE LOG DATA DIALOG You can rename the generic labels i e Map xx in the Log Data dialog so that they specify what type of data is being mapped and where it is being sent For example in Figure 14 MAP 29 has been renamed to MyCernoxTherm An easy but temporary method uses the Log PPMS Data dialog box in MultiVu select Utilities gt gt Log PPMS Data Right click on the channel that you set up to receive and display data A popup dialog will open so that you can change the name for that channel Figure 15 The drawback to this method is that the name will revert to its default MAP 29 whenever you close MultiVu General Standard Items Diagnostic Items Advanced Temp f Field f Status Position Pressure I Dr Curr f Dr1 Power Dr2 Cur Dr 2 Power Digital In Unselect All l Br Resist Map 20 Br Excit Map 21 Br2 Resist Map 22 Br2Excit
18. sed for PPMS options are the following e Chan 23 MFP Rotator e Chan 25 ACMS VSM e Chan 27 Heat Capacity He3 e Chan 55 57 EverCool Note Some of the Available channels are not supported in the Model 6000 so you cannot assign data to them Those are channel numbers 53 54 67 68 and 94 99 To begin using the Tables utility double click on one of the Available channels in the PPMS Data Channels dialog or select a channel and click on the Redirect Data button In the dialog shown in Figure 2 we selected Channel 29 When you select a channel the Data Redirect dialog will open Figure 3 As you can see Channel 29 has been automatically entered into the Destination Channel text Data Redirect X29429 tbl Source Destination Channel 23 Possible data channels to 01 Sustem Temp use are 20 29 53 61 67 93 box Depending on how you intend to use the Tables O2System Mag Feld O ili j 03 Motor Positi ables utility you can select a Source option or you can select 04 Bridge aad none no data source for special purposes O5 Bridge 1 Current x O6 Bridge 2 Resist Edit New Table s OF Bridge 2 Current e For example as we demonstrate in a later section you can set up one of the user bridge channels to measure Map Assistart o cence _ the resistance of an external thermometer and use the Tables utility to convert it to temperature Figure 3 Data Redirect dialog box But perhaps you want to send data
19. verted data To be compatible with the Tables utility calibration tables must have 3 79 data pairs and the two columns must be separated by tabs or commas See Creating Calibration Tables below for the complete requirements Data Redirect X29429 tbl Destination Channel z Possible data channels to 01 System Temp use are 20 29 53 61 67 93 02 System Mag Field 03 M otor Pasition Tables 04 Bridge 1 Resist np Edit New Table 05 Bridge 1 Current 06 Bridge 2 Resist O Bridge 2 Current Map Assistant Table Editor INPUT OUTPUT b no label no label Cx Eeen Interpolation Input Data a Output Data linear y hd Validate Graph Send to channel 29 Send to Model 6000 lt lt Edit Entries Save to Disk Done x Figure 4 Data Redirect dialog and Table Editor Interpolation The Input Data Output Data settings determine the interpolation for the input and output data For temperature measurements use the log scales for interpolation The program will not extrapolate beyond the values of the table when data is being collected but you can extrapolate new values for the table by using the lt lt Edit Entries button see below The Graph button graphs the data displayed in the INPUT and OUTPUT columns so that you can verify the calibration data visually The Validate button starts a utility that checks the regularity of the intervals in the calibration table e g perhaps y
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