ALTONOVUS OHMRANGER-LCV OR-01 Instruction Manual
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ALTONOVUS OHMRANGER-LCV OR-01 Instruction Manual

Low compliance voltage ohmmeter
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Instruction Manual
OR-01 Low Compliance Voltage Ohmmeter
1
OR-01 Instruction Manual V1.0 dated 14 Mar 22 – OR Software V2.20 and above

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Summary of Contents for ALTONOVUS OHMRANGER-LCV OR-01

  • Page 1 Instruction Manual OR-01 Low Compliance Voltage Ohmmeter OR-01 Instruction Manual V1.0 dated 14 Mar 22 – OR Software V2.20 and above...
  • Page 2 If used in any manner other than that expressly set out in the AltoNovus product documentation, warranties granted by AltoNovus shall be deemed void and AltoNovus shall not be liable for any claims, or damages arising out of product misuse or malfunction.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS Preface ..........................5 The User ..........................5 Conventions Used in This Manual ..................5 Explanation of Safety Warnings................... 5 Obtaining Documentation and Information ................5 ΩhmRanger-LCV™ ......................6 Utility and Employment ......................6 Theory of Operation ......................6 Technical Data ........................
  • Page 4 Maintenance ........................26 Replacing the Batteries ...................... 26 Cleaning ..........................26 Recalibration ........................26 OR-01 Instruction Manual V1.0 dated 14 Mar 22 – OR Software V2.20 and above...

  • Page 5: Preface

    We welcome your comments and ideas, which may be incorporated in a ΩhmRanger-LCV™ FAQs page. Any comments, requests for clarification, or suggestions for future Versions of this document can be submitted to: info@altonovus.com. OR-01 Instruction Manual V1.0 dated 14 Mar 22 – OR Software V2.20 and above...

  • Page 6: Ωhmranger-Lcv

    2 ΩhmRanger-LCV™ 2.1 Utility and Employment ΩhmRanger-LCV™ is an accurate, affordable, low compliance voltage ohmmeter, for the measurement of resistance of components that cannot be exposed to large stimulus voltages. One example is the delicate Josephson Junction that forms the ‘transistor equivalent’ of some quantum computers.
  • Page 7 The ΩhmRanger-LCV™ is developed from AltoNovus’ NanoRanger, which is an auto-ranging ammeter used to measure low currents, with great accuracy, through decadal ranges. ΩhmRanger-LCV™ has an additional, readable voltage source. terminal of the ΩhmRanger-LCV™ and The stimulus voltage selected is output on the Positive the resistance to be measured is connected across the terminals.

  • Page 8: Technical Data

    R + R_INTERNAL = 0.2067V / 89.8nA (here using Range 1, where the associated Range Resistance is 200KΩ). Therefore: R + 200KΩ = 2.3MΩ, and R = 2.3MΩ – 200KΩ = 2.1MΩ For clarity, the User can see the 3 values above V (206.7mV), I (89.8nA), and the Range (1) on the display in real time, and live, during measurement, as shown above.

  • Page 9: Compliance

    UNIT OPERATIONAL PARAMETERS 0 – 50C Temperature 10 – 90% non-Condensing Humidity 2.4 Compliance ΩhmRanger-LCV™ is certified UKCA, CE and FCC compliant. A supporting Technical File is available to Competent Authorities on request. 2.5 Guide to Product Positive Terminal B - Negative Terminal C - Display Screen D - On / Off Button E - Menu Navigation...

  • Page 10: Device Set-Up

    C - The Voltage being applied by ΩhmRanger-LCV at the Positive terminal, in this case 206.7mV, to measure the resistance. D - The active Range and the observed Current. E - The Signal to Noise Ratio (SNR). The SNR indicates how much noise, variation, and AC components are in the signal, followed by Maximum and Minimum Current samples during the reading.
  • Page 11 ΩhmRanger-LCV™; Power, Menu, and Select. Pressing the Power button will start the ΩhmRanger-LCV™. Two start-up screens will display, whilst loading the code. The first screen shows the AltoNovus logo: Then a second screen, shown below, will appear briefly, with the serial number of the ΩhmRanger-LCV™...

  • Page 12: Ωhmranger-Lcv™ Menu Structure

    4 Beep Read • Details These Menu options may change in the future. ΩhmRanger-LCV™ software updates are available from time to time. Register for notifications at info@altonovus.com. 2.8.1 Measure The Measure feature performs a measurement, as described in Section 4.
  • Page 13 This feature allows the User to specify the stimulus voltage that will be applied by ΩhmRanger- LCV™ to the Device Under Test (DUT). There are 2 options, approximately 380mV (the default setting), or 206 mV. Configuration is saved to Non-Volatile memory and restored on Power Up. 2.8.3 Powerdown This feature enables the automatic Power Off timer.
  • Page 14 This mode of operation also gives an audio cue to notify Users who may need to keep the Device Under Test (DUT) under close observation during the measurement process. To begin the process, ΩhmRanger-LCV™ takes a measurement and stores the value (as the first in the sequence).

  • Page 15: Safety

    3 Safety Please use ΩhmRanger-LCV™ only as described in this Instruction Manual and the CAUTION! complementary Quick Start Guide, which is included with every device. 3.1 Using ΩhmRanger-LCV™ Safely 3.1.1 Environmental Conditions: • ΩhmRanger-LCV™ is not intrinsically hazardous. Users should take the same care when using ΩhmRanger-LCV™, as they would with any other device for measuring resistance.

  • Page 16: Guide To Graphical Symbols

    3.1.6 Maintenance Safety Information: • ΩhmRanger-LCV™ is not User-serviceable, or User-repairable. If ΩhmRanger-LCV™ should fail to operate satisfactorily during its warranty period, please contact AltoNovus through the website to arrange for repair or replacement. 3.2 Guide to Graphical Symbols 3.2.1...
  • Page 17 3.2.2 Explanation of Graphics in this Instruction Manual SYMBOL MEANING Do not immerse in, or expose to, liquid or dust. Avoid extremes of temperature. Precision electronic instrument. Do not drop. Do not subject to heavy weights or excess pressure, particularly in the screen area.

  • Page 18: Taking Manual Readings

    4 Taking Manual Readings The following section explains how to take readings. 4.1 Switch ΩhmRanger-LCV™ ON Fit the batteries and connect User-supplied probes in accordance with the instructions at Section 2 above. Pressing the Power button will start the ΩhmRanger-LCV™. Following Power Up, ΩhmRanger-LCV™...

  • Page 19: Switching Ωhmranger-Lcv™ Off

    4.4 Switching ΩhmRanger-LCV™ OFF Press the Power button again, once readings are complete, to return ΩhmRanger-LCV™ to Standby mode. Failing this, the automatic Power Off Timer will do so, according to the timeframe that the User has specified via the Menu. OR-01 Instruction Manual V1.0 dated 14 Mar 22 –...

  • Page 20: Getting Connected - Taking Pc-Controlled Readings & Scpi Commands

    *ESE? This command queries bits in the Status Enable Register of the Standard Event Register. *ESR This command reads and clears the contents of the Standard Event Status Register. *IDN? This command retrieves the identification string of the device: AltoNovus, ΩhmRanger-LCV,nnnnnnn,yyyy Where nnnnnnn = serial number yyyy = software version *OPC This command sets the operation complete (OPC) bit after all pending commands have been executed.

  • Page 21: Scpi Required Commands

    *SRE This command sets or clears the bits of the Service Request Enable Register. *SRE? This command queries the bits of the Service Request Enable Register. *STB? This command collects the status byte of the device. *WAI This command postpones the execution of subsequent commands, until all previous overlapped commands are finished (Not Used).
  • Page 22 5.3.3 LCD Backlight (CONFigure:LED) CONFigure:LED <0,1> This command will turn the LCD backlight LED On or Off. 0 = off, 1= On. For example: CONFigure:LED 0 This command turns the backlight LED Off. CONFigure:LED? This command returns the backlight LED status. For example: CONFigure:LED? 5.3.4 Powerdown Settings (CONFigure:POWerdown)

  • Page 23: Device Commands For Advanced Use Only (Not Normally Required)

    5.3.7 4 Beep reading (CONfigure:BUZzer) CONFigure:BUZzer <0..4> This command sets the tolerance for the 4 beep reading mode of the ΩhmRanger-LCV™. There are 4 ranges, as detailed below. 0 = Off 1 = 1% 2 = 2% 3 = 5% 4 = 10% CONFigure:BUZzer? This displays the setting value.
  • Page 24 CONFigure:RANge? This command returns the resistance range setting of the ΩhmRanger- LCV™, as well as the maximum and the minimum ranges. For example: CONFigure:RANge? 7,8,7 Resistance range is 7, maximum range is 8, minimum range is 7. CONFigure:RANge:MAXimum <0..8> This command sets the maximum range of the ΩhmRanger-LCV™.

  • Page 25: Storage, Transportation And Disposal

    6 Storage, Transportation and Disposal Instructions for storage, transportation, and safe disposal of ΩhmRanger-LCV™ follow. Storage • AltoNovus recommends that the User removes the batteries from ΩhmRanger-LCV™ prior to any prolonged period of storage. • Avoid storing ΩhmRanger-LCV™ in areas of high humidity.
  • Page 26 Each ΩhmRanger-LCV™ is factory calibrated shortly before its despatch to the User and should remain highly accurate over time (12+ months). However, a recalibration service is available. Please contact AltoNovus at info@altonovus.com for details. DOCUMENT ENDS OR-01 Instruction Manual V1.0 dated 14 Mar 22 – OR Software V2.20 and above...

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