Melexis PTC04 User Manual
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Melexis PTC04 User Manual

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Calibration Software PTC04
User Manual
Calibration Software

Introduction

In this document you'll find a description of:
The Calibration Setup.
How to proceed with the calibration check.
What if the calibration check fails?
How does the calibration work?
What do we calibrate?
REVISION 1.44.O1 - 2 MAY 2018
UI_0PTC04AAMLX
User Manual
PTC04 Programmer
Figure 1: PTC04-DB-Calib.
Page 1 of 17

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Summary of Contents for Melexis PTC04

  • Page 1: Introduction

    Calibration Software PTC04 User Manual User Manual Calibration Software PTC04 Programmer Introduction In this document you’ll find a description of:  The Calibration Setup.  How to proceed with the calibration check.  What if the calibration check fails? ...

  • Page 2: Table Of Contents

    Calibration Software PTC04 User Manual Contents Introduction ............................... 1 Contents ..............................2 Calibration Setup ............................3 Requirements ............................3 Connections ............................... 3 RS232 settings ............................4 Check Calibration of the programmer ......................4 Calibration check ............................5 Before starting the calibration check ....................5 Manual voltmeter ...........................

  • Page 3: Calibration Setup

    2. Connect the reference voltmeter to the BNC connector or 4mm PCB Plugs (Both connections are in parallel); 3. Connect the RS232 or USB cable to the PTC04 and the PC; 4. Connect the RS232 of the multimeter to the PC;...

  • Page 4: Rs232 Settings

    When the software is started, double click on PTC-04 in the UI modules list or select from the menu “Tools  Search devices  All” Figure 4: Melexis Programmable Toolbox. REVISION 1.44.01 - 2 MAY 2018 Page 4 of 17...

  • Page 5: Calibration Check

    To open the Calibration test module, press the button Calibrate on the PTC04 User Interface. Figure 5: User Interface PTC-04. Calibration check This module of the PTC-04 User Interface is used to verify if the calibration parameters of the programmer are within tolerance.
  • Page 6 Figure 6: Calibration Check.  Press Verify Calibration to start the calibration. You are reminded to leave your PTC04 powered up for minimum 30 to 60 minutes before starting the calibration. Figure 7: Start Check?  Press yes to continue.
  • Page 7 Calibration Software PTC04 User Manual If you don’t use a Keithley 2000 or Agilent 34401A multi meter, you have to use a high accuracy voltmeter. The accuracy of the calibration depends on the precision of the voltmeter and the number of digits entered. With a manual voltmeter, the program will start with calibrating the internal voltmeter which will be used to check the PTC04 programmer.

  • Page 8: Manual Voltmeter

    Calibration Software PTC04 User Manual Manual voltmeter If the Keithley 2000 or Agilent 34401A multimeter feature is not selected the program will ask you to put in a few values from your voltmeter manually. These are used to calibrate the first sensing line of the PTC-04. This sensing line will be used as reference meter for the calibration check.

  • Page 9: The Calibration Check

    The program notifies you that the current calibration is out of tolerance and ask you if you want to corrected the calibration parameters or not. Figure 15: Calibrate?  If you press yes, the new calibration parameters are written into the PTC04.  If you press no, there are no modifications done. REVISION 1.44.01 - 2 MAY 2018...
  • Page 10 Figure 16: Calibrate Anyway? If no calibration is needed you can still choose to calibrate or not.  If you press yes, the new calibration parameters are written into the PTC04.  If you press no, there are no modifications done.

  • Page 11: What If The Calibration Check Failed

    When you choose to calibrate (press yes), the new calibration parameters are written into the PTC04. Afterwards the software verifies if the writing of the calibration data in the PTC04 was done correctly. Figure 18: The Calibration check has been ended successfully.

  • Page 12: Check Calibration Setup

    Before the measurements for the calibration check are started, the software will perform a hardware check on the on the calibration setup. This test will verify: if the PTC04 is well connected and in good health, if the PTC04-DB- Calibration is plugged in on the main board, the resistors on the PTC04-DB-Calibration, if the PTC04-DB-Calibration is connected to the reference voltmeter and if the reference voltmeter is connected to the PC (this is not the case for the manual calibration).

  • Page 13: Large Deviation

     After checking the setup, restart the calibration check. If the same channel(s) fail(s) again it is possible that there is hardware damaged on the PTC04. REVISION 1.44.01 - 2 MAY 2018 Page 13 of 17...

  • Page 14: Loggings

    ADC with the external high precision voltmeter. For the check, a number of voltage values are measured to calculate the difference between the ADC of the PTC04 and the External Voltmeter which results in to correction parameters for offset and gain.

  • Page 15: Dac

    (the right Y-axis). The purpose of the calibration check is to compare the DAC with the external high precision voltmeter. Also for this check, a number of values are measured to calculate the difference between the DAC of the PTC04 and the External Voltmeter which results in to correction parameters for offset and gain.

  • Page 16: What Do We Calibrate

    Calibration Software PTC04 User Manual What do we calibrate? Sensing lines: There are four sensing lines with independent ground connection. The source and reference that are used to calibrate the sensing lines are PPS 1 and the external voltmeter. Sensing line 1 channel 12 and Channel 28 (High sensitivity) of the ADC;...

  • Page 17: Contact

    Disclaimer The information furnished by Melexis herein (“Information”) is believed to be correct and accurate. Melexis disclaims (i) any and all liability in connection with or arising out of the furnishing, performance or use of the technical data or use of the product(s) as described herein (“Product”) (ii) any and all liability, including without limitation, special, consequential or incidental damages, and (iii) any and all warranties, express, statutory, implied, or by description, includ ing warranties of fitness for particular purpose, non- infringement and merchantability.

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