molbox™ Analog Circuit Calibration Software User`s Manual
Contents
1. 15 Volts Supply Supply Common 15 Volts Supply 2 MFC Output 7 MFC Output MFC Setpoint 9 Setpoint Sense MFC Setpoint Figure 5 Old Style molbox Analog Calibration Cable Page 11 5 FORMS DIAGRAMS NC DMM RED NC DMM BLACK 1 BLUE 1 WHITE NC 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL NOTES 1997 2002 DH Instruments Inc Page 12 6 WARRANTY STATEMENT 6 WARRANTY STATEMENT Except to the extent limited or otherwise provided herein DH Instruments Inc warrants for one year from purchase each new product sold by it or one of its authorized distributors only against defects in workmanship and or materials under normal service and use Products which have been changed or altered in any manner from their original design or which are improperly or defectively installed serviced or used are not covered by this warranty DHI and any of its authorized service providers obligations with respect to this warranty are limited to the repair or replacement of defective products after their inspection and verification of such defects All products to be considered for repair or replacement are to be returned to DHI or its authorized service provider freight prepaid after receiving authorization from DHI or its authorized service provider The buyer assumes all liability vis vis third parties in respect of its acts or omissions in2. moltools Before attempting to run the Analog Calibration program be sure that the molbox COM 1 port is connected to one of the communications ports of the host PC with a standard RS232 cable This allows the program to auto detect molbox and the serial communications setup is skipped To run the program double click the Analog Calibration Icon In most cases if everything is properly attached the software will auto detect molbox and the calibration form will follow The exceptions are when the current settings of the molbox COM1 port are not Even parity 1 Stop bit 7 Data bits and Baud rates of 2 400 or above In these cases you will have to manually set up the communications It is also possible that a general communications error will occur or some other unexpected problem that has not been mentioned If so choose the Communications menu option and select the proper settings from the Serial Communications Form shown at the end of this document in the Forms Diagrams section If you cannot determine the current settings of molbox use the following procedure from the molbox keypad Press ESC until you return to the main menu if you are NOT already there Select 0 Special followed by 5 Internal and 2 Remote Old style molbox1 users should select lt 3 Special 8 Internal lt 2 Remote 1 com1 gt If the molbox has an IEEE 488 option select 1 after selecting Remote in the previous step Either
3. 3 1 FILE SAVE DATA SHORTCUT CTRL S When save is invoked the contents of the display box are saved into a text based data file If this option is selected after a calibration check or recalibration a default file name is created based on the Year Julian Day V or based on last mode and a run increment The default extension depends on the information being saved If a calibration check was performed and the user selects save the extension is chk but if a recalibration is saved the extension is cal Files that are viewed and re saved default to their original filename The increment will always start at 1 and increase if multiple files are saved on the same day The final name and destination of the file can always be modified The option to save the file always automatically occurs at the end of a successful calibration However you may save the contents of the display at any time 3 2 FILE PRINT FILE This option allows the printing of a selected calibration file to the default Windows printer 3 3 FILE PRINT CURRENT DATA SHORTCUT CTRL P Print Current Data will print the current contents of the display box without saving it to a file 3 4 FILE VIEW FILE SHORTCUT CTRL F Any text based file can be viewed in the main display box with this option Its purpose is to view previous calibration files and configuration cfg files 3 5 TEST CHECK MOLBOX CALIBRATION A Calibration Check should be performed any
4. for the molbox1 under calibration use the communications menu option to re establish communications It is possible the molbox1 style was not properly detected A diagram of the MFC interface cable is included to aid in the reconstruction or modification of the calibration cable if necessary see Section 5 5 Page 7 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL NOTES 1997 2002 DH Instruments Inc Page 8 5 FORMS DIAGRAMS 5 FORMS DIAGRAMS 9 1 SERIAL COMMUNICATIONS FORM Pon Settings Com Port Com 2 Figure 1 Communications Setup Screen 5 2 ANALOG CALIBRATION FORM 1 molbox Analog Calibration Software ver 1 2b DH Instruments 1995 Eile Communications Test DMM Readings molbox Set Point Hi Reference Hi Output Hi Sense Input Hi Measure Input 18 996 19 00 mA JA 18 997 mA Low Reference Low Output Low Sense Input Low Measure Input 4 998 5 00 mA NAA 4 997 mA Calibration Check molbox Serial Number 355 May 07 1997 14 13 13 CALIBRATION DATA CALIBRATION ERROR FS Hi Reference 18 996 mA Low Reference 4 998 mA Hi set 19 00 mA 0 03 Lo set 5 00 mA 0 01 4 D Status Figure 2 molbox Analog Calibration Software ver 1 2b DH Instruments 1995 Screen 9 3 SET POINT TEST FORM Set Point Test Enter set point E Send mA oo amem Sense Value N A N A Measured Value 14 998 mA 0 013
5. Exit Figure 3 Set Point Test Screen Page 9 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL 9 4 EXAMPLE CFG FILE This file keeps a history of the current and previous analog calibration values The name of the file is based on the molbox sn The UPDATE line represents the last time the particular value was updated The order of the values is set adder set mult sense adder sense mult measure adder and measure mult This file should not exceed 25 lines including help text nor should there any other colons other than those below Analog uses them as delimiter The order and spacing of the following lines should also be the same Current Update Dec 28 1995 at 7 44 34 AM Current Value 0 001 0 970246 0 002 1 019117 0 004 1 015546 Previous Update Nov 28 1995 at 7 41 44 AM Previous Value 0 001 0 971293 0 002 1 018018 0 005 1 013785 Former Update Oct 28 1995 at 7 36 41 AM Former Values 0 002 0 973394 0 001 1 016267 0 003 1 011819 Initial Creation Sept 28 1995 at 7 33 18 AM file creation date Initial Values 0 002 1 023425 0 003 0 965949 0 005 0 961934 1997 2002 DH Instruments Inc Page 10 9 9 CABLES 15 Volts Supply MFC Output MFC Setpoint Setpoint Sense Supply Common MFC Output MFC Setpoint Setpoint Sense Current MFC Set Out Current mFC Set In 15 Volts Supply Figure 4 molbox Analog Calibration Cable
6. ORE PREVIOUS CALIBRATION 0 7 6 4 TROUBLESHOOTING de Ropa a Rer ERE e a 7 44 GENERAL PROCEDURES 7 5 FORMS DIAGRAM S 9 5 1 SERIAL COMMUNICATIONS FORM ennennenes 9 52 ANALOG CALIBRATION 0 9 5 3 SET 9 5 4 EXAMPLE CFG 10 5 lil Len NA Un ft 14 6 WARRANTY STATEMENT 2 13 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL TABLES Table 1 DHI Authorized Service Providers iii eene 13 FIGURES Figure 1 Communications Setup Screen 9 Figure 2 molbox Analog Calibration Software ver 1 2b DH Instruments 1995 Screen 9 Figure 3 Set Point Test SGre dee b ee ee eaa 9 Figure 4 molbox Analog Calibration Cable sise 11 Figure 5 Old Style molbox Analog Calibration Cable ss 11 ABOUT THIS MANUAL Manual Conventions CAUTION is used in throughout the manual to identify user warnings and cautions NOTE is used throughout the manual to identify operating and applications advice additional explanations indicates direct function keys e g RANGE gt gt indicates PG7000 screen displays e g lt 1 gt 1997 2002 DH Instruments In
7. Sengen Tsukuba Shi Tel 0298 55 8778 Japan Asia Ibaraki Prefecture 305 Fax 0298 55 8700 JAPAN tohte ohtegiken co jp DH Products Technical National Institute of Metrology Tel 010 64291994 ext 5 Peoples Republic of Service Division Heat Division Tel 010 64218637 ext 5 China Pressure amp Vacuum Lab Fax 010 64218703 NO 18 Bei San Huan Donglu cxcen mx cei gov cn Beijing 100013 PR CHINA Page 13 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL NOTES 1997 2002 DH Instruments Inc Page 14
8. c Page 1 INTRODUCTION 1 MOLBOX ANALOG CIRCUIT CALIBRATION SOFTWARE 1 1 PRODUCT OVERVIEW The purpose of this software is to calibrate the MFC analog control circuit in molbox1 There are three separate lines that are individually calibrated by the software First there is the set line that is used to set MFC set points Then there are two input lines the sense and the measure The sense line is used to readjust the set value to match itself and the measure line is used to read the output of the MFC The measure line is the most important of the three even if the set point and sense point are out of tolerance the measure line will still allow an accurate calibration if it is within tolerance In current mA mode there is no sense line so N A appears in all sense fields while in current mode 1 2 GETTING STARTED Make sure that your PC has the following minimum requirements Windows 3 0 4 MB of RAM and 1 MB of hard disk space To install the software insert the moltools installation disk and run the setup utility This can be done in Windows by going to the File Menu selecting Run and typing A SETUP or in Windows 95 by pressing Start and choosing Run then typing A SETUP where A represents the drive that the installation disk is located This utility will install the molbox Analog Calibration program and all of its associated files into the moltools directory and create a program group in Windows named molbox
9. change the baud rate with the number keys and select ENTER or bypass it to view the next parameter by pressing enter Repeat Step 6 for Parity Word Length and Stop Bits and terminating characters Select the proper configuration on the Serial Communications Form and press OK Page 1 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL NOTES 1997 2002 DH Instruments Inc Page 2 2 RUNNING CALIBRATION 2 RUNNING A CALIBRATION 2 1 OVERVIEW Before running a calibration connect the 25 pin connector end of the calibration cable to the MFC port and the other end to the voltage or current measuring channel of the multimeter The red plug is positive voltage the black plug is negative voltage the blue plug is positive current and the white plug negative current When performing a Voltage mode calibration only connect the Red and Black connectors to the multimeter Current mA calibrations should only have the blue and white connectors attached AN Leaving different mode connectors attached or letting any connectors come in contact during a calibration could damage the molbox circuit 2 2 CHECK CALIBRATION The first step is to check to see if the calibration is out of specification This is accomplished by selecting a Voltage or Current mode Calibration Check from the Test menu see Section 3 5 The software will set two points 5 and 0 5 V or 20 and 5 mA without correcting with the molbox sense line A
10. d in this manual are manufactured under international patents and one or more of the following U S patents 5 142 483 5 257 640 5 331 838 5 445 035 Other U S and international patents pending DH Instruments DH DHI molbox molbox1 are trademarks registered and otherwise of DH Instruments Inc Document No 5500093b 04 020604 Printed in the USA 1997 2002 DH Instruments Inc TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTE NUS esce ces eo FIGURES EE Il ABOUT THIS 2 30 0 rco ded be 2 1 MOLBOX ANALOG CIRCUIT CALIBRATION SOFTWARE 1 14 PRODUCTOVERVIEW ttd Re nen A deett du etatis 1 1 2 GETTING STARTED isses Didius odd nt de 1 2 RUNNING A CALIBRATION 2 2 3 24 OVERVIEW 3 22 CHECK CALIBRATION i d ue 3 23 4 3 MENU OPTIONS PRUEEM OM MEA a aan 5 31 FILE SAVE DATA SHORTCUT 5 5 3 2 FILES PRINT FILE ne uidemus etae ecd EDD 5 3 3 FILE PRINT CURRENT DATA SHORTCUT 5 34 FILE VIEW FILE SHORTCUT CTRL F et 5 3 5 TEST CHECK MOLBOX CALIBRATION 5 3 6 TEST RECALIBRATE ne ae rei o ied iid 5 37 TEST TEST SET VALUE SHORTCUT CTRL4T tnnt tnnt trennen 6 3 8 TEST REST
11. fter each setting a prompt on the status bar to enter the current multimeter reading displays The area of input will highlight and you must type in the multimeter reading and press return The multimeter will only display the proper value when you are prompted so wait for the prompt before entering the reading It is important to make sure that the value is properly input into the text box as this will directly affect the resulte of the calibration The agreement between the multimeter readings and those read back from the molbox must be less than 0 1 full scale for set values and x 0 05 full scale for the measure values for molbox1 If this is the case the molbox1 is in tolerance and there are no other necessary steps However if the molbox is out of tolerance then a recalibration is necessary Page 3 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL 2 3 RECALIBRATE A recalibration determines new calibration coefficients for the set measure and sense lines based on the supplied multimeter readings To perform a recalibration choose either a Voltage or Current mode Recalibration from the Test Menu see Section 3 6 The software will set 5 and 0 5 V or 20 and 5 mA depending on the type of calibration selected After each set point the multimeter readings must be entered when prompted in the same manner as a calibration check except it will do it twice The first time the software will calculate new adders and multip
12. liers and write them to molbox1 The second time the software is attempting to verify that the new calibration was successful Therefore the second set of data input by the user should be within the molbox specification Once the calibration passes the save calibration option displays see Section 3 1 lf for some reason the calibration fails the original calibration values are restored While the calibration is running it is not necessary to do anything except wait for the software to inform you when to input information or if there is a problem To stop any calibration early just press ESC If early the original calibration values are written back to the molbox There is a file named molbox serial number _mA cfg that resides in the installation directory of the Analog program The file name will have mA after the serial number for current mA configuration files only In this file the current previous former and initial molbox calibration values and their dates are maintained In this case former refers to the value prior to previous Data for this file is used to restore previous calibration values in order to maintain metrological continuity see Section 3 6 At the beginning and end of each calibration the molbox calibration values are compared to the file data If they do not match the file is updated See Section 5 4 for an example cfg file 1997 2002 DH Instruments Inc Page 4 3 MENU OPTIONS 3 MENU OPTIONS
13. molbox Analog Circuit Calibration Software User s Manual 2002 DH Instruments Inc High pressure liquids gases potentially hazardous Energy stored in these liquids and gases can be released unexpectedly and with extreme force High pressure systems should be assembled and operated only by personnel who have been instructed in proper safety practices 1997 2002 DH Instruments Inc All rights reserved Information in this document is subject to change without notice No part of this document may be reproduced or transmitted in any form or by any means electronic or mechanical for any purpose without the express written permission of DH Instruments Inc 4765 East Beautiful Lane Phoenix AZ 85044 5318 USA DH Instruments makes sincere efforts to ensure accuracy and quality of its published materials however no warranty expressed or implied is provided DH Instruments disclaims any responsibility or liability for any direct or indirect damages resulting from the use of the information in this manual or products described in it Mention of any product or brand does not constitute an endorsement by DH Instruments of that product or brand This manual was originally composed in English and was subsequently translated into other languages The fidelity of the translation cannot be guaranteed In case of conflict between the English version and other language versions the English version predominates Products describe
14. sponding values The status bar at the bottom of the screen will display Out of spec or spec after each set point 3 8 TEST RESTORE PREVIOUS CALIBRATION To restore the previous calibration data select this option If the CFG file for the molbox exists the previous value in it is used to update the analog circuit s slope and offset values If the file does not exist the file is created An example CFG file is included see Section 5 4 1997 2002 DH Instruments Inc Page 6 4 TROUBLESHOOTING 4 TROUBLESHOOTING 4 1 GENERAL PROCEDURES If the calibration continues to fail due to excessive errors out of spec make sure that a molbloc is properly connected to the molbloc port A and or B on the molbox and restart the calibration from the beginning by selecting Check Calibration If molbox1 is not auto detected for whatever reason the test option is disabled on the main form Use the communications menu option to select the proper molbox I O settings Before attempting to select any options check to make sure that everything is still plugged in properly To change the settings either click the settings that you want or tab to the field and use the arrow keys to change the desired item Select OK after choosing the proper settings If you do not know the current configuration use the procedure outlined under the Getting Started section see Section 1 2 If current mA mode calibrations are inappropriately disabled
15. time the circuit is in question It is a means of verifying the circuit in its current state The procedure for checking a calibration is described in Section 2 2 The Current mode option is unsupported in the old style molbox1 As a result it is disabled when calibrating one of these units 3 6 TEST RECALIBRATE MOLBOX This option should be selected to update the calibration coefficients of molbox1 The procedure for verifying the calibration is described in more detain in Section 2 3 As with the previous option the Current mA mode option is unsupported in the old style molbox1 therefore the Current mode option is disabled when calibrating one of these units Page 5 1997 2002 DH Instruments Inc SWITCHBOX USER S MANUAL 3 7 TEST TEST SET VALUE SHORTCUT The purpose of the Test Set Value option is to allow a user to insure that the values between the calibration points are within the molbox1 specifications Values set with this option are corrected by the molbox1 sense line while the set values of a Calibration Check are not When selected a form is activated that allows users to select the mode and enter a desired set point and read the circuit output see Section 5 3 To set a value choose the desired set mode and enter the desired value and press either enter or send then enter the multimeter reading when prompted The percentage of full scale error of the sense and measure outputs display next to their corre
16. volving use of the products In no event shall DHI be liable to purchaser for any unforeseeable or indirect damage it being expressly stated that for the purpose of this warranty such indirect damage includes but is not limited to loss of production profits revenue or goodwill even if DHI has been advised of the possibility thereof and regardless of whether such products are used individually or as components in other products Items returned to DHI under warranty claim but determined to not have a defect covered under warranty or to not have a defect at all are subject to an evaluation and shipping charge as well as applicable repair and or calibration costs The provisions of this warranty and limitation may not be modified in any respect except in writing signed by a duly authorized officer of DHI The above warranty and the obligations and liability of DHI and its authorized service providers exclude any other warranties or liabilities of any kind Table 1 Authorized Service Providers DH INSTRUMENTS INC AUTHORIZED SERVICE PROVIDERS TELEPHONE NORMAL SUPPORT COMPANY ADDRESS FAX amp EMAIL REGION DH Instruments Inc 4765 East Beautiful Lane Tel 602 431 9100 Worldwide Phoenix AZ 85044 5318 Fax 602 431 9559 USA msearle dhinstruments com Minerva I P amp M Handelsweg 13 Tel 31 35 52 54 997 European Union Postbus 76 1270 Fax 31 35 52 64 560 AB Huizen info minervaipm com NETHERLANDS Nippon CalService Inc 2 9 1
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