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Elektor International Media BV
www.elektor.com

2 MHz LCR Meter Kit AU2019 

Assembly & Calibration

Menu structure overview (for your reference)

[MENU] button - short press for access to user settings

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Language                           

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Q limit for secondary display      

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Sorting parameters                 

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Sort                               

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AC level                           

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DC bias                            

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Change Display: INVERSE/NORMAL     

[MENU] button - long press for access to calibration menus

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Set sine generator offset          

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Measured value of Vref (DDS)       

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CMRR of Voltage diff. opamp        

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PGA2: gain 3 calibration           

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PGA2: gain 10 calibration          

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Calibration of the range 1         

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Calibration of the range 2         

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Calibration of the range 3         

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Calibration of the range 4         

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<Short-circuit> Trim, all freq.    

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<Open-circuit> Trim, all freq.   

Summary of Contents for 19883

Page 1: ...1 3 2 p a g e s i n s t r u c t i o n s 2 MHz LCR Meter Kit Assembly Calibration Step by step instructions from First Start up to Final Adjustments Jean Jacques Aubry V3 2...

Page 2: ...2 MHz LCR Meter Kit AU2019 Assembly Manual 2...

Page 3: ...s a downloadable PDF Corrections are made as we receive feedback We invite you to check that you are in possession of the updated version of this essential document which you can find at the following...

Page 4: ...y within the range PC software for Windows macOS and Linux Test conditions Open circuit test voltage 4 options 0 1 Vrms 0 2 Vrms 0 5 Vrms 1 Vrms 5 DC Polarisation For C 0 to 5 V For L 0 to 50 mA Accur...

Page 5: ...8 Stand alone mode 19 9 Use in PC mode 24 10 Updates 27 Other information sources 28 Appendix LCR6 texts v3 txt 30 Assembled prototype Your kit has been carefully checked Both boards have been tested...

Page 6: ...de 3 Assembled MCU board BNC connectors not mounted 4 Assembled Display board without the button of the rotary switch Note the LCD has a protective film so transparent that it can go unnoticed It has...

Page 7: ...1 Contents of your Kit 7 6 Flatcable reversible 7 Button 24mm 8 USB cable mini USB USB A 9 Test clip with two Kelvin clips and 4 BNC connectors...

Page 8: ...ibrations 11 Screwdriver trimming tool Hammond case machined body machined and screen printed front panel machined and screen printed BNC side machined and screen printed USB side 2 black plastic fram...

Page 9: ...tion each one precise ly using the positioning pins press it secure against the board then solder the two electrical contacts Only one of the two positioning pins should be soldered unlike the video o...

Page 10: ...the M3 male female standoffs 14b Positioning the front panel on this Display board Mount the knob on the rotary encoder shaft and connect the flatcable to J1 on the Display board Slide the MCU board...

Page 11: ...ot slide smoothly it may be necessary to slightly file the edges of the PCB Note Completion of the assembly takes place later 6 p 18 4 My first start up On the MCU board turn switch SW1 to the OFF pos...

Page 12: ...e start up of the assembled LCR Meter The five pushbuttons to the right of the display in conjunction with the rotary knob which is also a pushbutton allow a dialogue between the user and the device T...

Page 13: ...steps in the order of the menus Note The menu option Change display INVERSE NORMAL fig 16e which allows the display to be inverted light dark background only appears once version 3 of the file LCR6 t...

Page 14: ...yed value to the measured value Press OK to confirm the entry or Exit to leave the menu without changes 5 3 CMRR of the differential amplifier U7C This setting provides the maximum common mode rejecti...

Page 15: ...5 Calibration menu 15 17 Location of the components mentioned in the instructions for calibration Photo by Jean Jacques Aubry...

Page 16: ...in the instrument are calculated for each of the above frequen cies This will take a few minutes each time At the end of each of the following steps you will be asked to confirm to save the new value...

Page 17: ...uencies 5 8 Calibration of range 3 Install a jumper on headers J8 J9 and J12 The calibration parameters will be calculated for each of the predefined frequencies 5 9 Calibration of range 4 Install a j...

Page 18: ...rking using the last nut M3 Prevailing Torque Type Hex Thin Nut MCU PCB 6 mm standoff MF Washer thickness 0 5 mm Screw M3 length 4 mm Hammond Case 19 Final securing of the MCU PCB in the Hammond case...

Page 19: ...a before returning to the measurement screen 8 Stand alone mode Equipped with the Display board the device can work without a com puter This is the stand alone mode The instrument automatically starts...

Page 20: ...op switches the representation of the component From AUTO default to SERIES or PARALLEL The second TRIM button starts the TRIM procedure for the current frequency OPEN or SHORT depending on the measur...

Page 21: ...guage Allows the choice of the language used for the menus English French German Dutch 8 1 2 Qlimit for secondary display Selection of the Q value 1 D above which the secondary parameter is not displa...

Page 22: ...C bias Positive polarity is on HD HS connectors The possible values are 0 5 0 V in 1 V or 0 1 V steps 0 50 mA in 10 mA or 1 mA steps Press the rotary knob to change the step value For inductances afte...

Page 23: ...or code X is displayed and the program loops endlessly through a sequence with LED D12 on for 0 5 s and off for 1 s Each bit of the binary equivalent of the displayed 5 bit code X gives the state of o...

Page 24: ...rs will be displayed The port settings are saved and will be used the next time you start up The first time a floating window appears it is attached to the bottom of the main window You can detach and...

Page 25: ...d in the instructions accompanying the update Occasionally after selecting the file to be loaded LCR6 hex possibly with a revision number the update procedure does not start If this happens close the...

Page 26: ...Manual 26 9 3 AU2019 menu 9 3 1 About AU2019 This window provides information about the Bootloader Firmware and AU2019 program versions 9 3 2 Qt About This window provides information about the versi...

Page 27: ...cent software can be downloaded Updates from the Author www elektormagazine com labs remake lcr meter The update operation is described in the Operating Instructions LCR Meter AU2019 EN Operating Inst...

Page 28: ...n Operating instructions PC interface etc in English and French can be downloaded from this page www elektormagazine com magazine elektor 167 59255 The file named 190311 AU2019 DOC EN FR 2021 01 04 zi...

Page 29: ...ge Description of the formatting of this file Creating an AU2019 Android application_b pdf AU2019 Building Android application with Cordova_b pdf These two files explain how to create modify the AU201...

Page 30: ...ratie bereik 1 Calibratie bereik 2 Calibratie bereik 3 Calibratie bereik 4 Afregeling alle freqs kortsl Afregeling alle freqs open 42 36 TEXT_ARRAY English PS Test Error code u INITIALISATION WAIT No...

Page 31: ...Nicht der richtige Jumper ende Okay bitte ein paar Minuten Geduld Ausf hrung Kalibrierung Bereich 1 Ausf hrung Kalibrierung Bereich 2 Ausf hrung Kalibrierung Bereich 3 Ausf hrung Kalibrierung Bereich...

Page 32: ...as Change Display INVERSE NORMAL French Langage Q limite pour affichage secondaire Param tres du tri Tri Amplitude de la sinuso de Polarisation continue Modifier Affichage INVERSE NORMAL Deutsch Sprac...

Page 33: ...Appendix LCR6 texts v3 txt 33...

Page 34: ...display Sorting parameters Sort AC level DC bias Change Display INVERSE NORMAL MENU button long press for access to calibration menus Set sine generator offset Measured value of Vref DDS CMRR of Volta...

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