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Measurement Technology FAQ

All questions that apply to the field of measurement technology are assigned to this category

  1. What device do I need if the test object is connected to the protective earth (PE)?

    If the test object or the fixture is connected to the protective earth, a floating (potential-free) device is required. For insulation resistance […]
  2. What is the difference between the PE test leads PEP2, PEP4 and PEP7?

    The basic difference between the test leads lies in the number of pins. PEP2 is a two-wire test lead with one source […]
  3. What is the difference between Ls and Lp? Which one should I choose?

    Should you choose Ls or Lp – or Cs or Cp? This is a frequently asked question. General rule: Low impedance |Z| […]
  4. I’m measuring a negative inductance. How is that possible?

    It should be noted that at very high frequencies, the winding capacitance of a coil becomes dominant and the impedance decreases significantly […]
  5. I can’t establish a connection via RS232. Is the interface defective?

    The RS232 interface is quite robust. In most cases, communication issues are caused by incorrect settings or a faulty RS232 cable. Start […]
  6. What is the RS232 pin configuration of the measuring device?

    As with most serial interfaces, the serial port of Sourcetronic measuring devices is not entirely based on the RS-232 standard. Only the […]
  7. How can I save measurement results or parameter settings?

    Sourcetronic measuring instruments come with a USB interface on the front and various communication interfaces such as RS232, USB, handler or LAN […]
  8. The device switched to Chinese. How can I change it back?

    On Sourcetronic measuring devices, the language can usually be set using the [SYSTEM] button. This applies to larger devices such as the […]
  9. I want everything from a single source. Is there also software for the measuring instruments?

    Yes, Sourcetronic offers comprehensive software for its measuring instruments. Most devices can be operated using the user-friendly ST®Meter 3.0. With this software, […]
  10. What is the measurement principle for determining insulation resistance with Sourcetronic insulation testers?

    The resistance is calculated from the applied test voltage (which is floating and therefore suitable for measuring insulation resistance to ground in […]
  11. How can I load the firmware update onto the ST9201?

    The ST9201 is available in several versions. The ST9201C only features an AC high voltage test. The ST9201, ST9201B, and ST9201S also […]
  12. Is the DC BIAS source 20A DC or 120A DC? Shouldn’t it be an AC source?

    The DC-Bias current source provides 20A DC. However, multiple units can be connected in parallel. A master unit with a control interface […]
  13. How must a high-voltage test station be secured? What does “safety-limited current” mean?

    A high-voltage test station must be secured and clearly marked in accordance with the guidelines of the occupational accident insurance (DIN EN […]
  14. What information do I need to install ST®Meter 4.0?

    When ordering ST®Meter 4.0, you will receive the installation file for the software and a license key. After installing the software, you […]
  15. What does error code E02 mean on the ST2822?

    The error code on the ST2822 handheld LCR meter indicates that the internal voltage regulator is defective. Unfortunately, the device needs to […]
  16. Accurate measurement of inductors & capacitors, including their quality factor (Q)

    The measurement accuracy of the secondary parameter is primarily based on phase shift accuracy, which remains roughly constant across the range. However, […]
  17. What do BIN NO. / BIN Count, List Sweep, and Trace Sweep mean on LCR meters?

    Sourcetronic LCR meters have an integrated comparison function that allows the test item to be assigned to up to eleven sorting bins […]
  18. What IP protection rating does your LCR Meter ST2830 have? Are there any installation recommendations?

    The user-friendly ST2830 LCR meter has an IP20 protection rating. You may be interested to know that there is a two-piece mounting […]
  19. What is the difference between FuncA and FuncB when setting measurement parameters?

    During a single measurement cycle, the ST2829 LCR meter can measure four impedance parameters: two primary and two secondary. The following parameters […]
  20. What is null calibration and how do I perform it?

    When measuring with an LCR meter, the accuracy of the results is crucial. The resistance of the test leads is also measured, […]
  21. How do I update the firmware on my Sourcetronic LCR meter?

    To update the firmware of Sourcetronic LCR meters from the ST2830, ST2827, and ST2829 series, you need the appropriate update file (.sec) […]
  22. How often should I calibrate my measuring device?

    This question is frequently asked and not easy to answer. As a general guideline, we recommend a calibration cycle of one year. […]
  23. What is the difference between calibration and adjustment?

    The terms calibration and adjustment are often confused or used interchangeably. However, there is a fundamental difference: Calibration is used to verify […]
  24. What does the calibration label indicate?

    During each calibration, your measuring device undergoes a detailed inspection. A calibration certificate is issued, and a calibration label is affixed to […]
  25. Calculating the Quality Factor Q for Capacitors

    Introduction The bridge meters ST2827 and ST2829 behave differently in the low D-range. The ST2829 consistently delivers more stable values. The ST2827 […]
  26. Can I set the null calibration on the LCR meter to a specific frequency?

    If you only test your DUT at specific frequencies, Sourcetronic LCR meters allow you to perform the null calibration at those selected […]
  27. I can’t get a connection to the tester with the software. What can I do?

    Please check the settings on the device first. If you have connected the instrument via RS232, you have to set the baud […]
  28. How can I switch the benchtop multimeter to current measurement?

    The explanation can be easily explained using the ST1941 benchtop multimeter.     The functions of the measuring instrument are located to […]
  29. What is the difference between a 4 and 4½ digit multimeter?

    A whole digit can represent digits from 0-9. A half digit can only represent a “1”, but a 2 can no longer […]
  30. For which tasks is a digital multimeter best suited?

    As the name suggests, multimeters can be used as all-rounders in various application areas.  Whether in the laboratory, in production or in […]
  31. What do I have to consider when using an LCR meter?

    When using an LCR meter, a zero calibration should be performed before each measurement with a new setup or the use of […]
  32. Firmware upgrade for milliohmmeter ST2515

    Download firmware here:  download.sourcetronic.com/2515_001.sec Copy the attached file to a small USB stitch (1 to 4 GB, formatted with FAT or FAT32) […]