VWnote User Manual
Contents
1. o gt KHE A 0 3286405E 8 p gt co 0 1450402E 2 7 3120702 4 Save Cor RO RO PRESS gt Zan 46883 l 28 How to Set Up Sensor Configuration 1 SWEEP FREQUENCY The following eight parameters define how each sensor is read and how the readings are displayed The current settings for these parameters are presented on eight screens that you can scroll through using M and j Pressing while each parameter is displayed will take you to further screens where you can edit their values e Atthe top of the list of sensor configuration parameters is the range of sweep frequency currently used by VWnote to read this sensor Press to open up another screen to select the default range or to define a custom range using M and j j e Ifyou select the custom range and press you will be presented with another screen where you can enter the start and end frequencies When entering a sweep frequency use gt to move the cursor to the next character position and use N and W to move through 0 9 Press the Save key to confirm the edit or to cancel the change and return back to the previous screen Pressing during entry or edit will not move the cursor one character to the left It will cancel the entry or edit and take you to the previous menu In most cases the default sweep frequen2. STEP ACTION On the VWnote navigate through the menu to DATA TO USB and press gt You then have two options DO NOT ERASE INTERNAL DATA or ERASE 3 i INTERNAL DATA scroll between the two options using i and choose your option and press the Save button Note choosing ERASE INTERNAL DATA will erase the data after the 4 i transfer to the USB choosing DO NOT ERASE INTERNAL DATA will keep whatever data is in the VWnote internal memory intact The screen will say DATA SAVED TO USB PRESS gt 5 i Pressing will take you back to the menu Remove the USB pen drive from the VWnote remembering to replace the protective cap on the USB port The data is now on the USB The format of the data files will be discussed in more detail in Part III 32 The DATE TIME Menu gt DATE TIME Select this menu item to update the date and time of the VWnote internal clock The date is in ISO format YYYY MM DD Use to move the cursor from the field of year to fields of month day hour minute second and back to year and so on While in each field use and to increase or decrease the value of that field Press Save to commit the changes to VWnote internal clock This menu only needs to be executed occasionally yyyy mm dd c hh mm ss Press gt to move from field to field and press UP to increase
3. Hz 2 1000 blank 6 Hovering over an input field with the mouse will bring up a short description of that field SENSOR_NAME Hz 2 1000 ha blank a lt 43 44 STEP ACTION 7 When you have finished filling in the details click OK to continue If there is an error in any field it will be highlighted in red mouse over the highlighted field to show the error message on the bottom i left of the window Sensor Name SENSOR_NAME Units Raw Hz 2 1000 A Units Eng blank Wele ane 8 i If there was no error the Sensor Configuration Window will close i and you will see the new Sensor Configuration in the data table on the main Configuration Tool Window SEP ACTION 10 To edit an existing Sensor Configuration select the configuration you want to edit and go to Edit then Edit Sensor 1 This will bring up the Sensor Configuration window with the details for the selected configuration Clicking on the Cancel button will cancel any changes to the selected Sensor Configuration Sensor Name SENSOR_NAME2 Units Raw Hz 2 1000 Units Eng blank 12 Click the OK button to save the changes You will be returned to the main Configuration Tool Window 45 46 STEP ACTION
4. DATA TO USB DATE TIME CFG EXPORT CFG IMPORT FIRMWARE UPDATE INFO OFF Select this menu item to take a reading of the VW sensor that is currently connected to the VWnote Select this item to add sensors to the list of sensors or to edit the reading and displaying parameters and calibration factors of an existing sensor Select this menu item to transfer data stored in the VWnote internal memory to the USB pen drive that is plugged into the VWnote USB port Select this menu item to display the date and time of the real time clock in the VWnote and to update it when necessary Select this option to copy the sensor list in the VWnote to the USB pen drive plugged into the VWnote USB port If you add sensors or revised the sensor configuration in the VWnote using the keypad you will need to make a copy of the new sensor configuration to the USB pen drive for backup or for further editing on your PC This option is used to copy a new sensor configuration file from a USB pen drive to the VWnote overwriting the existing sensor configuration in the VWnote This option is only available in the Advanced Mode You only need to perform a firmware update when instructed to do so by our support department Instructions on how to access the Advanced Mode and how to perform firmware update will be provided Choosing this option to display the following information about the VWnote Serial number S N of the
5. Press once to return to the sensor list to select another sensor from the same site or press twice to go to the site list to select another site e Disconnect the sensor cable from the crocodile clips 3 Repeat the procedures in Step 2 for any other sensors you wish to read taking care to ensure that the sensor you are reading matches with the unique site and sensor ID in the VWnote 4 After you have finished taking readings for the current site you can transfer the data straightaway to a pen drive in the field without the need for a site PC as follows e Plug a USB pen drive into the USB port on the bottom of the VWnote e Goto DATA TO USB in the main menu and then press to display DO NOT ERASE INTERNAL DATA e Press Mand Warrows to select between DO NOT ERASE INTERNAL DATA and ERASE INTERNAL DATA before pressing Save to initiate the transfer The transfer is successful when the VWnote displays DATA SAVED TO USB Press gt 5 Before you move to the next sensor location or the next site please ensure that you disconnect the sensor lead from the VWnote replace all caps and return the VWnote back to its carry case for safe transport 1 If you have not already downloaded the data to a pen drive see Step 4 above then do so now 2 Transfer the data on the USB pen drive to a PC for further transfer or processing Please refer to Part Il Detailed VWnote user guide in this
6. 13 To delete a Sensor Configuration select the configuration you want to delete and click on Edit then Delete Sensor This will remove the Sensor Configuration from the list 14 To save the Sensor Configurations go to File then Save If you i created a new file the Save File Dialogue will display Type in a name for the file or accept the recommended name and click Save Foma RS i New folder Documents library Name Date modified Type No tems match your search STEP ACTION i5 If you edited an existing file File Save will save it over the existing i configuration file without asking 16 When you are asked to enter or confirm a file name a warning message will appear alerting that VWnote will only recognise VW_CONFO vwn while performing CFG IMPORT i h Please be aware the VWnote will only recognize configuration files that have the following name VW_CONFO vwn however you are free to enter any name for 17 To exit the program click on File then Exit or click the red X in the upper right corner of the window 47 48 Finding and interpreting data files LOCATING DATA FILES The data collected from a VWnote is stored internally and retrieved using a USB pen drive When you open the pen drive folder on a PC or laptop you will find a folder has been created with the
7. 20 087 0 17 548 8 20 021 0 04 25 00 4112 2 5913 5 25 123 0 25 546 7 25 049 0 10 30 00 3937 9 6448 8 30 053 0 11 535 3 29 987 0 03 35 00 3782 8 6988 5 35 024 0 05 539 7 34 981 0 04 40 00 3643 9 7531 2 40 023 0 05 542 7 40 017 0 03 45 00 3521 8 8062 5 44 917 0 17 531 3 44 961 0 08 50 00 3409 0 8604 8 49 912 0 18 542 3 50 022 0 04 Formulae Linear E G R0 R1 Polynomial E ARI BRI C The zero reading should be established on site by the user on installation The site value of C must be calculated using the formula C AR0 BRO The instrument detailed hereon has as applicable been inspected tested and calibrated in accordance with ISO 9001 2008 approved procedures and unless otherwise indicated performs within 0 20 Polynomial ms in all respects to our relevant specifications and drawings a D TE Line MANAGER 55 56 Calculation of engineering units from frequency readings of VW sensors CALCULATION USING LINEAR EQUATION CALCULATION USING POLYNOMIAL EQUATION The mathematical relationship between the resonance frequency of a tensioned wire and the force applying the tension is represented by a near straight line relationship between the square of the frequency Hz and the applied force The sensor readings in frequency can be converted to measurements in engineering units such as mm kPa or psi using the following equations The following equation is used for readings in
8. NET Framework is already installed Download a copy from Microsoft com if you are running an older operating system such as Windows XP and do not have it on your PC yet You will need the following items before running the Tool e AWindows PC with the following minimum PC requirements A USB pen drive with the VWnote Configuration Tool software The PC running the VWnote software must have the following minimum requirements Windows XP and above operating system e Pentium 4 1 GHz or better specification 1GBRAM 40GB hard drive or solid state drive e USB port interface You can run the Tool directly on the USB pen drive or you can copy it on to the hard drive on your PC and run it from there 41 42 STEP ACTION 1 Insert the VWnote USB pen drive into the PC 2 Open the VWnote software folder on the pen drive and run VWnote Configuration Tool exe onfiguration Tool v1 1 0 0 Open CtrleO Close Save CtrleS Save As 4 After you elect to create a new configuration file the Add New Sensor window will be displayed to allow you to add a new sensor to the configuration file EL ee Tr ee ee ee ane Ree em 5 Click on either the General Settings or Calibration Factors tab on the Sensor Configuration Window Clicking on the Cancel button will cancel the addition of a new Sensor Configuration SENSOR_NAME
9. VWnote Version number and version date of firmware Unit date and time Battery Voltage Storage free in e Storage used in You can press the and y arrows to scroll through the information To avoid accidental power down the VWnote does not have an OFF button You can switch off the VWnote by choosing OFF in the menu and then pressing You will see a message saying POWER OFF Bye See you later before the unit switches off As a power conservation measure the VWnote will switch itself off automatically after six minutes of inactivity You can navigate through the main menu by pressing M and j The selected menu item is shown by a gt in front of it 19 20 The READ Menu HISTOR SIMES LIST OF SENSORS gt READ The list of sensors you specified in the site you se SITE ABC_STN gt SITE DEFAULT me LJ List of Sensors in DEFAULT site gt DEFAULT_VW SITE BCC_ST_STN SITE XYZ_QUARRY SITE XYZ_STN Notes 1 List is sorted by SITE name 2 DEFAULT site is alwayd on the top of list Notes 1 List is sorted by SENSOR name 2 DEFAULT site has only one SENSOR DEFAULT_VW 3 Other sites may have more sensors The list of sites you specified will be displayed on the LCD screen two sites per screen and sorted alphabetically Use j and M to navigate up and down the list The top of the list is always DEFAULT which is hard code
10. delimiter string in the CSV file is CR LF characters carriage return and line feed There is a header line appearing as the first line of the file with the same format as normal record lines This header contains names corresponding to the fields in the file and contains the same number of fields as the records in the rest of the file The table below shows the fields in the data file for each line COLUMN FIELD NAME FORMAT Date Time yyyy mm dd hh mm ss Site name Te xt 10 chrs A Z 0 9 Sensor name VW raw reading VW raw reading unit name Engineering unit name Temperature reading Temperature Start sweep frequency Number integer End sweep frequency Number integer VWnote internal temp in C AMPL in mV SNR Noise frequency DATA STORAGE The standard internal memory capacity of the VWnote is 2GB which is AND HANDLING sufficient to store over 6 million sets of readings and the configuration parameters of several thousands of sensors It is possible to increase the memory size but research at Soil Instruments has shown that 2GB is more than ample storage Part IV Maintenance uide Contents This section contains the following topics SEE PAGE Routine Maintenance BATTERY The VWnote is manufactured with a multi layer circuit board containing MAINTENANCE surface mount components For this re
11. manual for more details of each step Part Il Detailed VWnote User Guide Contents This section contains the following topics SEE PAGE How to Use the Keypad Menu Structure Charging the VWnote The VWnote is supplied with a Nickel Metal Hydride NiMH rechargeable battery It is important to follow the charging procedure outlined below at all times to correctly maintain the battery Se Ll ee ee ee ee ee eee ee 1 Make sure the VWnote is switched off J gt Remove the protective cap from the charging point located onthe top of the VWnote Plug the connector into the charging point on the VWnote making sure to align the connections correctly The LED on the charging unit will follow the sequence outlined in the table below 7 Place the protective cap back into the charging point on the VWnote when charging is complete Charging Unit LED Sequence STEP JAIUS a cs 5 55c5 55 5 555555 5 55555x5 55555 xeren 2 Red Green ea ee eee ae An SI ob n n d 7 2 Red Green 3 Red Charging in progress 4 Green VWnote charged switched to trickle charge mode Follow the charging procedure outlined in this manual at all times to properly maintain the battery 14 Connecting Sensors to the VWnote You can connect only one Vibrating Wire sensor at a time to the VWnote this sensor can be with or without a built in temperature sensor VW SENSOR All sensor
12. signal from the selected sensor for diagnostic purposes The default selection is NO do not save wave form You can change it to YES save wave form Press to toggle between NO and YES Press Save to commit the change to VWnote temporarily for this sensor and for this session or to cancel the change you have just made Every time the VWnote is switched on the setting for save wave form for all sensors in VWnote will be reset to NO The display resolution for each sensor reading in raw or engineering units can be set to match your needs The default value for this parameter is 0 001 3 digits after the decimal point You can select from 1 0 1 0 01 0 001 0 0001 equivalent to 0 1 2 3 and 4 digits after decimal point Press until the one you wish to use is displayed for this sensor Press Save to commit the change to VWnote or to cancel the change you have just made 29 30 6 RAW DATA UNIT 7 ENGINEERING UNIT NAME ENG UNIT NAME 8 CALIBRATION FACTORS CAL FACTORS Although three raw data formats Hz Hz 1000 and period are displayed by VWnote while the sensor is read only one raw reading in Hz or Hz 1000 is saved and used for conversion into reading in engineering units The default value for this parameter is Hz 1000 Press to toggle between Hz 1000 and Hz Press Save to commit your selection to VWnote or to cancel the change you
13. the VWnote Configuration Tool more details are in Part lll 1 The list of sites you specified will be displayed on the LCD screen two sites per screen and sorted alphabetically Use M and j to avigate up and down the list 2 The top of the list is always ADD A SITE when selected it will allow you to add a new site to the list of sites in the VWnote 3 Press to display a screen where you can enter a site name 4 While you are on this screen press to go to the next character position press and j to go through the valid letters A Z 0 9 and _ After you have entered the site name press Save to enter the site name into VWnote gt The site name is limited to 10 characters and can contain only A Z 0 9 and _ Pressing lt during entry or edit will not move the cursor one character to the left It will cancel the entry or edit and take you back to the previous menu 1 The list of sensors in the site you selected will be displayed on the LCD screen two sensors per screen and sorted alphabetically Use and j to navigate up and down the list 2 The top of the list is always ADD A SENSOR when selected it will allow you to add a new sensor to the list of sensors for the site you selected 3 Press to display a screen where you can enter a sensor name After you have entered the sensor name press Save to enter the site name into VWnote 4 While you are on this screen pressing wil
14. the data are offloaded e How often the backlight is switched on e Ambient temperature In designing the VWnote system Soil Instruments have produced firmware routines to maximise the battery life As a rule of thumb the VWnote can achieve battery life of up to 30 hours without backlight and 15 hours with the backlight switched on To maximise battery life the VWnote has an inbuilt off timer When the VWnote has been inactive for six minutes it will automatically turn off Battery voltage The VWnote saves its battery voltage with every reading to enable batteries to be monitored and recharged in a timely manner The battery voltage in the VWnote should be above 5 0 volts for the VWnote reading circuitry to work If the voltage goes below 3 6 volts the VWnote will shut off Each VWnote is calibrated before it is shipped To meet your calibration needs we offer re calibration services at our facilities If you intend shipping the VWnote back to our factory please contact Soil Instruments or our distributors for more information From time to time Soil Instruments may issue updates to the firmware and the VWnote Configuration Tool for additional features or bug fixes Details of how to update these will be provided as the situation arises 53 Part V Appendices Contents This section contains the following topics TOPIC SEE PAGE Appendix B Definition of Fast Fourier Transform FFT Appendix C Frequently Ask
15. 500 or more It can drop to single figures in a very noisy environment Based on experience any reading with SNR less than 5 should be ignored and retaken e NOISE F Ideally this value should be far from the sensor reading in Hz If this value is very near the sensor reading you expect then the result you are getting may be invalid e DECAY RATIO The value of this index is dependent upon the type and quality of the sensor The value should be between 0 and 1 representing 0 100 While the higher the value the better a value greater than 1 would suggest a bad sensor What unit is Hz2 1K Due to limited display space on the LCD screen Hz 1000 is displayed as Hz 1K Why is my engineering unit displayed as blank Before you can set up sensor configuration with proper engineering unit names in the VWnote the engineering unit will be displayed as blank alerting you that it is not yet set SUPPORT www itmsoilsupport co uk 44 0 1825 765044 59 SOil INSTRUMENTS Bell Lane Uckfield East Sussex t 44 0 1825 765044 e info soil co uk TN22 1QL United Kingdom f 44 0 1825 744398 w www soil co uk Soil Instruments Ltd Registered in England Number 07960087 Registered Office 34 Bell Lane Uckfield East Sussex TN22 1QL
16. C_QUARRY gt New SITE SITE ABC_STN SITE BCC_ST_STN lt lt lt SITE XYZ_QUARRY SITE XYZ_STN gt Existing SITE List sorted by SITE name lt 1 or 0 1 0 01 0 001 0 0001 RAW DATA UNIT Hz 1000 or Hz gt DEFAULT SWEEP FREQUENCY _J 450 6000 Hz 450 6000 HZ lt CUSTOM EXCITATION la gt 2 PRESS gt To SPECIFY VOLTAGE 5V or 15V TEMPERATURE UNIT C or F SAVE WAVE FORM No or YES Save SETTINGS SAVED DISPL RESOL PRESS gt ENG UNIT NAME kPa user input CAL FACTORS PRESS gt Vv A E lt LINEAR G and RO PRESS gt POLYNOMIAL ABC PRESS gt List of Sensors in one SITE A oe SENSOR SITE Save SADD A SENSOR I Y censor Save XXXXXXXXXXXX EXTENSOMETER_1 lt XXXXXXXXXXXX EXTENSOMETER_2 e a PIEZOMETER_1 gt PIEZOMETER_2 PIEZOMETER_3 Existing SENSOR List sorted by SENSOR name A SWEEP FREQ SAVED gt PRESS gt D gt START END Save 0450 6000 Hz SWEEP FREQ SAVED n PRESS gt m Save GAUGE FACTOR G J HZ 0 1499E 2 l lt BASE READING RO 4561 02 CAL FACTORS SAVED PRESS gt
17. GE Introduction Important information The following symbols are used throughout the manual IMPORTANT INFORMATION PRODUCT CHANGES WARRANTY DISPOSAL GAD WARNING Important Failure to adhere to the warnings in this manual may result in network disruption and possible data loss Failure to observe the warning may result in injury product malfunction unexpected readings or damage to the product that may invalidate its warranty Tips give additional information that may be helpful when using VWnote Soil Instruments has an on going policy of design review and reserves the right to amend the design of their product and this instruction manual without notice Refer to our terms and conditions of sale for warranty information The batteries are a consumable item and are excluded from the warranty Products marked with the zm Symbol are subject to the following disposal rules in European countries e This product is designated for separate collection at an appropriate collection point e Do not dispose of as household waste For more information contact Soil Instruments or the local authority in charge of waste management System Description Things You Need to Know About VWnote FEATURES BENEFITS Portable and rugged Compatible with most commonly used VW sensors Real time display of VW sensor readings in engineering units as well as in Hz Hz 1000 and period FFT based
18. Hz 1000 E Gx R0 R1 where E is the resultant Engineering unit G is the linear Gauge factor for the units of calibration RO is the base or zero reading in Hz2 1000 taken at the time of installation R1 is the current reading in Hz 1000 The polynomial formula for all Soil Instruments VW sensors is E AxR1 BxR1 C where E is the resultant value in Engineering units A B and C are the polynomial factors from the calibration sheet R1 is the current reading in Hz 1000 It should be noted that C is an offset value derived from a base reading in the factory where the sensor calibration is performed Soil Instruments recommend the value for C should be recalculated at the time of installation from the RO as follows C A x RO B x RO VWnote allows you to enter either C or RO in the sensor configuration If you choose to enter RO the VWnote will recalculate the C for you before performing the raw to engineering unit conversion Appendix B Definition of Fast Fourier Transform FFT Fel Any time varying signal a musical sound for instance will be composed FAST FOURIER of one or more component frequencies of different amplitudes TRANSFORM The Fast Fourier Transform FFT algorithm is a fast and efficient method of determining what those component frequencies are along with their respective amplitudes How to make use of the quality indices Below is some simple guidance on how quality ind
19. O is in raw data units such as Hz or Hz 1000 Please see Appendix A in Part V of this manual for a more detailed description of the calibration factors Building a Sensor Configuration File BUILDING WITH VWNOTE KEYPAD BUILDING WITH VWNOTE CONFIGURATION TOOL You can build the list of sensors with configuration in two ways Using the keypad on the VWnote to create and edit the list in the VWnote s internal memory e Using the VWnote Configuration Tool software supplied free of charge to create and maintain the Sensor Configuration File on your PC then transfer it to the VWnote s internal memory using a USB pen drive This was covered in detail in Part Il VWnote Configuration Tool is a piece of Windows PC based software written to create and maintain the sensor configuration files It is supplied free with the VWnote You can also download a copy of the latest version from www itmsoilsupport com INSTALLING THE VWNOTE CONFIGURATION TOOL RUNNING THE VWNOTE CONFIGURATION TOOL The latest version of VWWnote Configuration Tool is distributed free on the USB pen drive delivered with each VWnote It is a single exe file named VWnote Configuration Tool exe residing in the VWnote software folder on the USB pen drive There is no need to run a set up program to install it VWnote Configuration Tool requires Microsoft NET Framework 3 5 to run On modern PCs running Windows 7 or above
20. Soil INSTRUMENTS Man 230 Whnote ser Manua itmsoll VWnote Soil Instruments Limited has an ongoing policy of design review and reserves the right to amend these specifications without notice Man230 VWnote MN0814 Rev1 0 4 What s this manual about This manual tells you about the VWnote and how to use it to take readings from VW sensors Who does this apply to Installers field engineers and technicians who need to acquire readings from VW sensors and to maintain the VWnote system Welcome Thank you for choosing the VWnote This manual has been written to help you utilise all of the functions of the VWnote Please read this manual thoroughly before use to help avoid any problems and keep it handy when using the VWnote VWnote The VWnote is a handheld device which takes readings from Vibrating Wire VW sensors and stores them on an internal memory for retrieval later via a USB pen drive It uses the Fast Fourier Transformation FFT based reading algorithm which not only gives more reliable readings but also gives the user the ability to check the quality of each reading rejecting it when there is too much interference The VWnote can read almost all commercially available vibrating wire sensors Built with state of the art electronic components and the latest firmware technology each VWnote comes with many powerful built in functions These functions will allow you to customise how reading
21. T PRESS gt k lt ___T lt STEP ACTION Press M and j to scroll through the main menu until you find 2 CFG IMPORT 4 Select this option using the you will see a message saying ARE YOU SURE YES Save NO 5 Press Save to proceed or lt to cancel and return to the previous screen The sensor configuration in the VWnote will be overwritten by that in the configuration file 25 36 The INFO Menu gt INFO S N E XXXXXXXXXXXX This menu item allows you to view information about the VWnote The information includes VWnote serial number Firmware version number and compilation date of firmware Data and time of the VWnote s internal clock Storage capacity in MB used Storage capacity in MB free c Y Firmware V1 9 2011 12 01 Unit Date Time lt n 2011 03 28 15 12 Battery Voltage 5 0 V Storage used 1885 MB 99 Storage free 0 625 MB 0 itmsoil 37 Part Ill Guide to the Configuration File and the Data File Contents This section contains the following topics TOPIC SEE PAGE VWnote Sensor Configuration Building a Sensor Configuration File VWnote Sensor Configuration Two of the most powerful features of the VWnote are e It provides you with a default reading method that will allow you to read most of the sensors most of the t
22. and lt DOWN to decrease digit value Save DATE TIME SAVED PRESS gt oS 33 The CFG EXPORT Menu If you have added new sensors to the VWnote or made changes to the sensor configuration in the VWnote using the keypad you can back up the sensor configuration to a pen drive using this menu item gt gt CFG EXPORT ARE YOU SURE Save PLEASE WAIT gt DONE gt Za YES Save NO lt PRESS l q ak ji Ensure the VWnote is switched on 2 Insert the USB pen drive into the USB port on the base of VWnote 3 Press and j to scroll through the main menu until you find CFG EXPORT 4 Select this option using the you will see a message saying ARE YOU SURE YES Save NO The sensor configuration in the VWnote will be saved in the root folder on the USB pen drive with the file name VW_CONFO0 vwn It will overwrite any file with the same name in the root folder 34 The CFG IMPORT Menu In addition to entering sensor configuration using the keypad you can produce a sensor configuration file on your PC using the VWnote Configuration Tool software For the import to work the configuration file must be named as VW_CONFO vwn and reside in the root folder on the USB pen drive SCFG IMPORT ARE YOU SURE Save DONE YES Save NO lt gt PLEASE WAI
23. ason there are no parts which require routine maintenance The VWnote is supplied with a Nickel Metal Hydride NiMH rechargeable battery Although the battery requires no maintenance as such it is important to follow the charging procedure outlined below at all times to correctly maintain the battery As rechargeable batteries decay over time the VWnote battery will be tested and replaced if necessary during annual re calibration O G G l ake sure the VWnote is switched off J gt Remove the protective cap from the charging point located on the J A top ef une nele remane annee 3 Plug the connector into the charging point on the VWnote making w Jh mancan al dm n o 4 Plug the charging unit into a mains power socket 5 Switch on the mains power to the charging unit SWED The LED on the charging unit will follow the sequence outlinedin 6 PETTA Wels oe oe DD 7 Place the protective cap back into the charging point on the VWnote when charging is complete STEP LED STATUS Red Green Red Green Charging in progress VWnote charged switched to trickle charge mode CALIBRATION FIRMWARE AND SOFTWARE UPDATE Follow the charging procedure outlined in this manual at all times to properly maintain the battery Battery life Battery life is a function of a combination of the following factors e Battery type e Sensor type e How often the VWnote is used to take reading e How often
24. connections to the VWnote are made via the Lemo plug which WITH BUILT IN is located under a cap on the top of the VWnote see figure below TEMPERATURE SENSOR CLIP COLOUR SENSOR TERMINAL Red VW Black VW Temperature Temperature Consult the sensor user manual for the sensor connections If you are still unsure please contact Soil Instruments Please ensure that the bare parts of the clips do not touch each other and cause shorts among the four wires VWnote is only compatible with the 3K ohm thermistor temperature sensors It will not work with the RTD based temperature sensor in some of the VW sensors VW SENSOR For a VW sensor without built in temperature sensor only connect WITHOUT the sensor to the red and the black crocodile clips BUILT IN TEMPERATURE SENSOR Only a qualified person trained in the use of VWnote and the VW sensors may connect sensors is 16 How to Use the Keypad Below is a picture showing the keypad of the VWnote Each key on the keypad has multiple functions depending on its context within the VWnote menu Save gt eJ KEY FUNCTION On The On button has two functions 1 When the VWnote is off pressing it turns the VWnote on 2 When the VWnote is already on pressing it will toggle the LCD displays backlight between on and off Up M The key acts as an up instruction in the situations below 1 It moves the cursor up
25. cy range 450 6000 Hz works well because VWnote uses FFT reading algorithm to derive readings from the sensor Optionally you can customise the sweep frequency to any range between 450 Hz and 6000 Hz such as 450 1250 Hz or 1200 2800 Hz VWnote will issue error messages if you enter a frequency that is less than 450 Hz greater than 6000 Hz or if the end frequency is less than the start frequency 2 EXCITATION VOLTAGE 3 TEMPERATURE UNIT 4 SAVE WAVE FORM 5 DISRIEAY RESOLUTION DISPL RESOL The default excitation voltage that VWnote uses to energise the sensor before taking a reading is 5 V This is sufficient for most site conditions where the sensors have a short cable length You can select the optional 15 V excitation if the sensor has along cable Press gt to toggle between 5 V and 15 V Press Save to commit the change to VWnote or to cancel The maximum cable length that 5 V excitation will work is dependent on factors such as the gauge size of the wires However as a rule of thumb cable lengths greater than 200m 600ft are usually considered to be long The default temperature unit that VWnote uses to display the sensors built in temperature sensor is C You can select the optional F Press to toggle between C and F Press Save to commit the change to VWnote or to cancel the change you have just made VWnote can be set up to capture the wave form of the sensor
26. d DECAY RATIO The value of this index is dependent upon the type and quality of the sensor The value should be between 0 and 1 representing 0 100 While the higher the value the better a value greater than 1 would suggest a bad sensor When you encounter unstable readings you should check the four quality indices to determine whether the reading is good If not then you should take another one For quality assurance these four indices are saved with the sensor readings Pressing the Save key while you are on the sensor reading screen will send the current VW readings temperature reading and the reading quality indices with time stamp to the VWnote internal memory VWnote will display READING SAVED PRESS to acknowledge the readings have been saved successfully Pressing gt will take you back to the sensor reading From there you can save another set of readings for the same sensor or you can press to return to the sensor list to select another sensor to read 23 24 The SETUP Menu Sev LIST OF SITES LIST OF SENSORS You can enter a new sensor configuration into VWnote or edit the existing sensor configuration in the VWnote using the keypad on the VWnote The process is slow because there are only six keys on VWnote It is designed for use on site when you need to add sensors or change the sensor configuration in an emergency To set up sensor configuration in bulk please use
27. d in the VWnote and cannot be changed by the user ected will be displayed on the LCD screen two sensors per screen and sorted alphabetically Use M If you select the DEFAULT site the top of the list is alway DEFAULT_VW which is hard coded in the VWno be changed by the user The DEFAULT_VW is a generic sensor created in you to use to read VW sensors before you have th and Ny to navigate up and down up a sensor list in the VWnote the list s e and cannot he VWnote for e chance to set D gt 12 651 psi Save gt TEMP 23 5 C gt READING SAVED NOISE F 1245 23Hz DECAY RATIO 0 65 gt AMPL 2 3mV P SNR 5 2 Notes 1 Reading quality indices displayed on 2 screens PRESS gt FRQ 2654 221 Hz TEMP 23 5 C Hz 1K 7044 965 lt TEMP 23 5 C J PER 376 76 uS J lt lt TEMP 23 5 C Notes 1 VW readings displayed on four screens 2 First line of first screen is reading in engineering unit 3 Other screens are readings in raw unit Sensor DEFAULT_VW uses the following default parameters of reading and displaying Site name DEFAULT e Sensor name DEFAULT_VW e Sweep frequency 450 6000 Hz e Excitation V 5V Display Resolution 0 001 e Unit raw Hz 1K Unit eng Hz 1K e RO 0 G 1 e Calibration linear Unit temp C In most cases the DEFAULT_VW
28. data reading algorithm for interference free readings Reads with the default full sweep frequency range 450 6000Hz or any user definable range Fully configurable reading and displaying parameters of each sensor Large data storage 2GB and easy data retrieval via a USB pen drive Firmware upgradable via USB pen drive by the user no need for a PC and no need to return it back to factory Powered by a Nickel Metal Hydride NiMH rechargeable battery 30 hours without backlight and 15 hours with backlight User selectable backlight for the display auto shutdown after six minutes of inactivity Powerful features in a rugged and portable package makes it easy to carry and operate in all site conditions Advanced FFT based reading algorithm ensures readings are accurate repeatable and free from interferences Easy to follow menu makes taking readings on site simple fast and error free The optional 15 VDC excitation which provides higher energy excitation than the default excitation of 5 VDC ensures quality readings for sensors with long cables A site ID and a sensor name are assigned to each sensor This facilitates management of a large quantity of VW sensors from a large site or multiple sites Saved readings are grouped by dates which together with the large internal memory minimises data loss Each reading is displayed and recorded with readings in raw and engineering units together with reading quality indices and opti
29. ding e Check the VW reading and the temperature reading Follow the troubleshooting guide in Appendix C in Part V of this manual if the readings are unstable or incorrect hm 4 If you have a pre prepared configuration file containing your custom sensor list go to CFG IMPORT in the main menu to load the sensor list into the VWnote for more details see CFG IMPORT in Part Il of this manual Switch off the VWnote by going to OFF in the main menu and pressing gt Unplug the sensor lead from the VWnote Replace the sensor connector cap and the USB port cap Place the VWnote in its carry case along with the sensor lead and a pen drive ready to take to site Remove the VWnote from its carry case Switch on the VWnote go to READ in the main menu and follow he procedures below to take a reading Connect a VW sensor to the VWnote using the sensor lead e Select your site from the site list and then your sensor from the sensor list 11 12 BACK IN THE OFRIGE e Ifyou do not have a pre prepared sensor list you can read the VW sensor by selecting DEFAULT_VW from the sensor list or you can add sites and sensors by going to SETUP in the main menu please refer to Part II for detailed instructions Press to start reading e If necessary press again to view the reading quality indices Press to return to the readings e Press Save to send the current readings to the VWnote internal memory
30. e sensor 2 SNR SNR is an acronym for Signal to Noise Ratio It is an index for the sensor signal strength in relation to the noise signal strength 3 NOISE F This is the frequency of the noise signal 4 DECAY RATIO This is an index of how quickly the signal becomes weaker 5 The AMPL and SNR are displayed on the first screen and NOISE F and DECAY RATIO are on the second screen You can navigate between the two screens by pressing and j Pressing will take you back to the sensor readings screen SAVE Any time varying signal a musical sound for instance will be composed of one or more component frequencies of different amplitudes The Fast Fourier Transform FFT algorithm is a fast and efficient method of determining what those component frequencies are along with their respective amplitudes below is some simple guidance on how these indices can be used to determine the quality of the reading 1 AMPL The value of this index depends on the type of sensor but it should be more than 0 5 mV SNR When the signal is good and noise is low this value will be 200 500 or more It can drop to single figures in a very noisy environment Based on experience any reading with SNR less than 5 should be ignored and re taken NOISE F Ideally this value should be far away from the sensor reading in Hz If this value is very near the sensor reading you expect then the result you are getting may be invali
31. ed Questions Troubleshooting Guide Appendix A How to apply Calibration Factors for VW Sensors The calibration certificate for your VW sensor will provide you with the information on how to convert the raw readings into readings in engineering units Below is an example of calibration certificate from Soil Instruments itmsoil Bell Lane Uckfield East Sussex t 44 0 1825 765044 e info itmsoil com TN22 1QL United Kingdom f 44 0 1825 744398 w www itmsoil com VIBRATING WIRE INSTRUMENTS CALIBRATION CERTIFICATE Instrument Type E10 Displacement Transducer Serial No 042564 Instrument Range 0 00 to 50 0 mm Calibration Date 19 01 2012 Gauge Factors in mm Ambient Temperature 323 C Period Gauge Factor K 92 1072800 Barometric Pressure 1016 mbar Linear Gauge Factor G mm digit 0 0092100 Calibration Technician Wayne Diprose Polynomial Gauge Factor A 0 000000024979630 Digital Micrometer Scale Polynomial Gauge Factor B 0 0089164270 Vibrating Wire Logger Serial No 636 Polynomial Gauge Factor C 28 551660 Regression Zero 3185 9 Applied Reading Reading Calculated Error FS Linear Calculated Error FS mm Period F7 1000 Linear Linear Increment Polynomial Polynomial 0 00 5610 9 3176 4 0 088 0 18 0 0 0 023 0 05 5 00 5182 9 3722 6 4 943 0 11 546 2 4 987 0 03 10 00 4840 0 4268 8 9 974 0 05 546 2 9 966 0 07 15 00 4555 8 4818 0 15 032 0 06 549 2 14 988 0 02 20 00 4316 6 5366 8
32. g up and down will display other screens displaying value of B and RO or C PRESS gt 3 Pressing when RO or C is displayed will take you to two further screens for RO and C 4 Use M and j to select which option you want The last one you view before you press Save will be used in the calculation from raw reading to engineering unit When entering a numeric value use gt to move the cursor to the next character position and use M and Yto move through 0 9 and and E where E is for entering numeric values with exponent for example 1 234E 8 for 1 234 x 102 When you are making an edit press Save to commit your entry to VWnote or lt to cancel the change you have just made Pressing during entry or edit will not move the cursor one character to the left It will cancel the entry or edit and take you to the previous menu The value for RO is in raw data units such as Hz or Hz 1000 More information on sensor calibration factors is given later in Appendix A in Part V The DATA TO USB Menu You don t need a site PC to download saved data from the VWnote Instead you transfer the saved data to a USB pen drive then transfer the data to a PC which need not be in the same office or the same site as the VWnote DO NOT ERASE gt INTERNAL DATA A gt s gt DATA TO USB ave S DATA SAVED TO USB PRESS gt ERASE INTERNAL DATA Y
33. have just made You can find the raw data unit on the calibration sheet of the VW sensor This is the name of the engineering unit that you would like to use when the reading of this sensor is displayed and saved such as kPa psi and mH20 It is a text string with up to eight characters Except comma all other alphanumeric characters and symbols such as amp etc are allowed The default value for this parameter is blank When entering an engineering unit name use to move the cursor to the next character position and use M and j to move through allowed characters Press Save to commit your entry to VWnote or lt to cancel the change you have just made Pressing during entry or edit will not move the cursor one character to the left It will cancel the entry or edit and take you to the previous menu Calibration factors are used to convert sensor raw readings defined above into values in engineering units also defined above The default calibration is linear which requires a gauge factor G anda base reading RO Press to go to the screen where you can select between LINEAR G and RO and POLYNOMIAL ABC If you select LINEAR pressing gt will take you to the two screens where you can review enter or edit G and RO Ifyou select POLYNOMIAL 1 Pressing will take you to the next screen where you can view enter or edit the value of A 2 Pressin
34. ices can be used to determine the quality of the reading e AMPL The value of this index depends on the type of sensor but it should be more than 0 5 mV e SNR When the signal is good and noise is low this value will be 200 500 or more It can drop to single figures in a very noisy environment Based on experience any reading with SNR less than 5 should be ignored and retaken e NOISE F Ideally this value should be far from the sensor reading in Hz If this value is very near the sensor reading you expect then the result you are getting may be invalid e DECAY RATIO The value of this index is dependent upon the type and quality of the sensor The value should be between 0 and 1 representing 0 100 While the higher the value the better a value greater than 1 would suggest a bad sensor 58 Appendix C Frequently Asked Questions Troubleshooting guide What happens if drop the VWnote unit The VWnote has been subjected to a drop test from a one metre height onto a concrete surface The VWnote is supplied with a wrist strap so you can keep it attached to your wrist when there is a drop risk Please make use of it to avoid drop damage What do do if my reading is unstable Answer 1 It may be that you have too many digits after the decimal point when you display the reading The default setting is three digits You may need to adjust the Display Resolution DISPL RESOL Answer 2 When you encounter unstable reading
35. ime e It allows you to define 1 A list of sensors stored in the VWnote to be monitored 2 The unique way that each sensor is energised and read 3 he unique way that results from each sensor are displayed and stored Content of the Sensor Configuration File le SWEEP FREQUENCY 2 EXCITATION VOLTAGE 3 TEMPERATURE UNIT 4 SAVE WAVE FORM The Sensor Configuration File contains the following eight parameters that define how each sensor is read and how the readings are displayed In most cases the default sweep frequency range 450 6000 Hz works well because VWnote uses FFT reading algorithm to derive readings from the sensor Optionally you can customise the sweep frequency to any range between 450 Hz and 6000 Hz such as 450 1250 Hz or 1200 2800 Hz The default excitation voltage that VWnote uses to energise the sensor before taking a reading is 5 VDC This is sufficient for most site conditions where the sensors have a short to medium cable length You can select the optional 15 VDC excitation if the sensor has a long cable The maximum cable length that 5 VDC excitation will work is dependent on factors such as the gauge size of the wires However as a rule of thumb cable lengths greater than 200m 600ft are usually considered to be long By default temperature readings will be displayed as C Optionally you can select F VWnote can be set up to capture the wave form of the sensor signal f
36. in the currently displayed list such as the main menu list of sites list of sensors current readings quality indices and various reading and display parameters It increases the value of the current field when updating date time It moves upward through a list of alphanumeric letters when the site name sensor name and sweep frequency are entered one character at a time wo pa The j key acts as a down instruction in the situations below It moves the cursor down in the currently displayed list such as the main menu list of sites list of sensors current readings quality indices and various reading and display parameters t decreases the value of the current field when updating date time t moves downward through a list of alphanumeric letters when 5 the site name sensor name and sweep frequency are entered one character at a time i The acts as a back instruction or NO to a question When a menu option is selected or a question is displayed on the screen pressing this key will take you back to the previous menu selection The gt acts as a next instruction in the situations below p When a menu option is displayed pressing this key will take youto the next screen or stage of the menu functions For example when pressed while READ is selected this key takes you to the list of sites when a sensor is selected this key will take you to the sensor reading screen When VWno
37. l move the cursor to the next character position press M and j to go through the valid letters A Z 0 9 and _ CONFIGURE A NEW SENSOR CONFIGURE AN EXISTING SENSOR The sensor name is limited to 15 characters and can contain only A Z 0 9 and _ Pressing lt during entry or edit will not move the cursor one character to the left It will cancel the entry or edit and take you back to the previous menu The name of each sensor should be in the Site Sensor format This will allow you to manage the sensors and their readings more efficiently by grouping them according to site names and with the sensors arranged in alphabetical order After you add a new sensor VWnote will automatically assign the following default values to the reading and displaying parameters listed below Sweep frequency 450 6000Hz Excitation V 5V Unit temp C Save wave form No Display Resolution 0 001 Unit raw Hz 1000 Unit eng blank Calibration linear RO 0 G 1 More detailed descriptions on these parameters are given in the next section By pressing once you can view and revise the values of the above sensor parameters After you have selected an existing sensor from the sensor list from the selected site press once to view and revise the value of the sensor configuration parameters stored in the VWnote 25 26 FLOW DIAGRAM gt SETUP gt gt ADD ASITE SITE AB
38. name made up of the prefix VN and the download date in the format YYMMDD for example VN130321 shows the data downloaded on 21 March 2013 Double click on the folder to open it and you will see one or more Excel compatible CSV files Each file is named by the date of the readings taken in the format YYYYMMDD for example 20130321 csv is a file of the readings taken on 21 March 2013 Only one file per day is created f you downloaded the data when older readings had not been erased from the internal memory on the previous download each set of readings will be shown in an Excel compatible CSV file However if you downloaded data after all internal data had been erased during a previous download then there should only be one reading file plus a Logfile LOGFILE CSV The Logfile is simply a record of events such as powering on or low battery with a note of the battery voltage this is for diagnostic purposes only and you may ignore it Click on a readings file to open it further explanation of the data shown is given in the next subsection 28 mirra yie e IS 1 94 2012 1741 carat DEFALA TOW 8882 829 MPPV IK sanama mnaye mic ERE 53885155131553 EE mima A 1 49 INTERPRETING The data file is in comma separated value CSV The field delimiter THE DATA FILE symbol is the comma character The record
39. onal waveform data This ensures that each reading is quality assured The VWnote does not require a PC in the field to set up or download data which means users of VWnote do not need to carry a site PC nor need to be computer literate to use VWnote System Components THE VWNOTE The VWnote is a handheld readout unit as well as a data logger for VW sensors Below is a picture of the VWnote showing the various parts that you will use to interact with it Sensor connector gt Backlit LCD display Keypad USB port for Rechargeable battery pen drive charging point USB PEN DRIVE Each VWnote will be supplied with a USB pen drive Apart from being the distribution medium for the VWnote Configuration Tool software you can also use it for data off loading from the VWnote as well as importing the configuration file to and exporting it from the VWnote VWNOTE Distributed on the USB pen drive with every VWnote is the VWnote CONFIGURATION Configuration Tool This is a Windows based software that you will TOOL SOFTWARE use to create and edit the sensor configuration file which will contain information on how readings from each sensor will be read displayed and stored VW SENSOR LEAD RECHARGEABLE BATTERY amp CHARGER VWNOTE CARRY CASE 10 The VW sensor lead is shown in the picture below One end of the lead has a Lemo plug that you will plug into the sensor connecto
40. r on the top left of the VWnote On the other end of the lead are four crocodile connectors coloured red black green and white for connecting to the wires in the signal cable of a sensor with matching colours The VWnote contains a Nickel Metal Hydride NiMH rechargeable battery and is supplied with a trickle charge battery charger itmsoil Smart Battery Charger earo The VWnote is supplied with a padded carry case with shoulder strap and pockets for the sensor connecting lead and the USB pen drive We recommend that you carry and store the VWnote in the carry case whenever it is not being used Quick Start Guide BEFORE YOU GOTO SITE WHEN YOU ARE IN THE REED 1 Place the VWnote on charge ensuring that you follow the charging procedure outlined in Part 11 Detailed VWnote user Guide Charging the VWnote 2 Switch on the VWnote 3 Select DATE TIME from the main menu to set the VWnote internal clock to the current date and time Select INFO to confirm that the firmware version is V1 17 or later If the firmware needs updating follow the instructions for firmware update in Part IV of this manual Test the reading function as follows e Connect a VW sensor to the VWnote using the sensor lead Goto READ in the main menu and select DEFAULT on the top of the site list and DEFAULT_VW from the top of the sensor list e Press gt to start rea
41. rom the selected sensor for diagnostic purposes The default selection is NO do not save wave form You can change it to YES save wave form temporarily for a selected sensor Every time the VWnote is switched on the setting for save wave form for all sensors in VWnote will be reset to NO 39 40 5 DISPLAY RESOLUTION 6 RAW DATA UNIT 7 ENGINEERING UNIT NAME 8 CALIBRATION FACTORS The display resolution for each sensor reading in raw or engineering units can be set to match your needs The default value for this parameter is 0 001 3 digits after the decimal point You can select from 1 0 1 0 01 0 001 0 0001 equivalent to 0 1 2 3 and 4 digits after decimal point This defines the raw reading in Hz or Hz 1000 that is saved and used for conversion into reading in engineering units The default value for this parameter is Hz 1000 This is the name of the engineering unit that you would like to use when the reading of this sensor is displayed and saved such as kPa psi and mH 0 It is a text string with up to 8 characters The default value for this parameter is blank Calibration factors are used to convert sensor raw readings defined above into values in engineering units also defined above The default calibration is linear which requires a gauge factor G and a base reading RO If you select polynomial you will need to enter A B and RO or C where the value for R
42. s you should check the four quality indices to determine whether the reading is good If not then you should take another reading If the problem persists you should re try using a narrower sweep frequency range Why am I getting a display of No VW sensor or No Therm Sen This means no VW sensor or no thermistor sensor is connected or the sensor or the signal cable is faulty Check the sensor lead is properly connected and then check the signal cable and the sensors What sweep frequency range should I use to read my VW sensors In most cases the default sweep frequency range 450 6000 Hz works well because VWnote uses FFT reading algorithm to derive readings from the sensor Optionally you can customise the sweep frequency to any range between 450 Hz and 6000 Hz such as 450 1250 Hz or 1200 2800 Hz Will VWnote work at very low or very high temperatures The VWnote was tested and working after it had been ina temperature chamber for an hour at 10 C At temperatures lower than 10 C the LCD screen may become unreadable The same test was conducted at 50 C and the VWnote functioned normally How do I make use of the quality indices Below is some simple guidance on how these indices can be used to determine the quality of the reading AMPL The value of this index depends on the type of sensor but it should be more than 0 5 mV e SNR When the signal is good and noise is low this value will be 200
43. s from each sensor are taken displayed stored and managed in order to assure correct and repeatable readings every time Contents PART GENERAL USER GUIDE Introduction Important information System Description Things You Need to Know About VWnote Features Benefits System Components Quick Start Guide PART II DETAILED VWNOTE USER GUIDE Charging the VWnote Connecting Sensors to the VWnote How to Use the Keypad Menu Structure Main Menu The READ Menu The SETUP Menu How to Set Up Sensor Configuration e DATA TO USB Menu e DATE TIME Menu e CFG EXPORT Menu e e CFG IMPORT Menu NFO Menu PART III GUIDE TO THE CONFIGURATION FILE AND THE DATA FILE VWnote Sensor Configuration Building a Sensor Configuration File Finding and Interpreting Data Files PART IV MAINTENANCE GUIDE Routine Maintenance Battery Maintenance Calibration Firmware and Software Updates PART V APPENDICES Appendix A How to Apply Calibration Factors for Sensors Appendix B Definition of Fast Fourier Transform FFT Appendix C Frequently Asked Questions Troubleshooting Guide We ee Co C9 Joo d I Zp 0 w Calo 20 24 28 32 33 34 35 36 51 52 52 53 53 54 55 57 58 E LYM E u instrumentation and monitoring Part General User Guide Contents This section contains the following topics TOPIC SEE PA
44. sensor will allow you to take readings from most type of VW sensors before you have the chance to define a sensor list for the VWnote 22 SENSOR READING READING QUALITY INDICES After you have selected which sensor to read by pressing gt the readings of the currently connected VW sensor will be displayed on four consecutive screens 1 Screen 1 The VW reading in engineering units as calculated using the raw reading and the calibration factors and zero reading you specified and temperature reading in C or F 2 Screen 2 The VW reading in Hz and temperature reading in Re AA 3 Screen 3 The VW reading in Hz 1000 and temperature reading in XC er 4 Screen 4 The VW reading in period uS and temperature reading imn Omak 5 You can navigate among the four screens by pressing M and j The readings will be automatically refreshed every two seconds Due to limited display space on the LCD screen Hz2 1000 is displayed as Hz 1K If no sensor is connected or the sensor or signal cable is faulty Screen 1 will display No VW sensor and or No Therm Sen alerting you to the problem In this case you will not be able to navigate away from the first screen When the readings of the VW sensor are displayed you can press gt to view the four reading quality indices as follows 1 AMPL AMPL is short for amplitude It is an index for the signal strength from th
45. te asks you to enter a site name a sensor name a frequency this key will take you to the next character position When VWnote asks you to change date time this key will take you to the next field The Save button has several functions Ti When you set a new DATE TIME for the VWnote it commits the change to VWnote memory When you use SETUP to enter or edit reading displaying and calibration parameters of a sensor in the sensor list it commits the changes to VWnote memory When the sensor reading is displayed it saves the latest reading It is also used as YES in response to the question ARE YOU SURE YES Save No For example when CFG EXPORT or CFG IMPORT is selected by pressing you will need to press Save to confirm that you want to proceed with the exporting or importing T7 18 Menu Structure MAIN MENU Normal Mode Menu ER Advanced Mode Menu gt READ gt READ SETUP SETUP gt SETUP gt SETUP DATA TO USB DATA TO USB gt DATA TO USB gt DATA TO USB DATE TIME DATE TIME gt DATE TIME gt DATE TIME CFG EXPORT CFG EXPORT v v gt CFG EXPORT gt CFG EXPORT CFG IMPORT CFG IMPORT Yy 1 A gt CFG IMPORT gt CFG IMPORT INFO FIRMWARE UPDATE gt FIRMWARE UPDATE gt INFO gt INFO gt INFO OFF OFF gt OFF gt OFF READ READ READ SETUP
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