Troubleshooting Position Calibrations
If you are having issues with your position calibration the first step is to review best practices and make sure you are following our instructions carefully through our position calibration guide🔗.
If you continue to have problems after:
- Checking the glass window underneath the heating plate is clean. For cleaning advice see here🔗.
- Checking the condition of the Delvotest® plate, and trying a different plate. Making sure it is an unused plate, with the foil still on, and you have placed it correctly within the DAS🔗, with the A1 corner of the plate aligning with the bottom right corner of the DAS (see the link for further details).
- Checking the cut-to-size, matte black piece of paper is clean and the correct size:
- The paper should be 190 × 240 mm matte black paper with a weight of 90 g/m². It's important that it has a non-glossy (i.e., matte) finish. We recommend using either dark 'copier paper' (i.e., a white piece of A4 paper ran through a copier machine without an image input to produce a 'black' print), or alternatively, a black cloth.
Then please get in touch with us at support@delvotest.com, make sure you download the calibration files and include them in your email. [which files, how to download]
Troubleshooting Colour Calibrations
If you are having issues with your colour calibration the first step is to review best practices and make sure you are following our instructions carefully through our colour calibration guide🔗.
If you continue to have problems after:
- Checking the glass window underneath the heating plate is clean. For cleaning advice see here🔗.
- Checking your physical colourcard unique identifier (ID) matches the underlying 'Color card ID' file in your DAS device (see our colour calibration guide🔗 for instructions on how to do this and what to do if they do not match).
Then please get in touch with us at support@delvotest.com, make sure you download the calibration files and include them in your email. [which files, how to download]
Troubleshooting Uniformity Calibrations
Ensuring that your Delvotest® Accelerator Smart passes uniformity calibration is essential for achieving reliable and consistent results. In this article, we’ll guide you through identifying, troubleshooting, and preventing uniformity calibration failures. By following the advice below, you can minimize downtime and ensure your device operates smoothly. In this article, we’ll cover the following topics:
- Key indicators of uniformity calibration failure
- Common causes of failure and practical solutions
Key Indicators of Calibration Failure
One of the primary signs that your device is experiencing a uniformity calibration failure is the presence of dark spots or uneven lighting on the calibration paper, consolidate calibration card or glass. When the device detects inconsistencies in lighting or cleanliness, it fails the calibration process, affecting its ability to read accurately. Additionally, the calibration report may show specific parameter values exceeding their acceptable range, causing the calibration to fail. One such parameter is the so-called 'Delta Wrt Parabolic Illumination', which must remain below 0.040 for an uniformity calibration to be successful. Here's an example where a dark spot was detected on the glass, leading to an uniformity calibration failure:
Common Causes of Failure and Solutions:
Dirty or Stained Glass/Paper:
- Problem: Dirt, dust, or stains on the glass under the grid or the white calibration paper can cause uniformity issues.
- Solution: Follow our cleaning and maintenance principles🔗 and our calibration best practices🔗 by ensuring you are using a clean, bright white paper or consolidated calibration card under the heating grid and that the glass plate is free from dirt or smudges.
Out-of-Specification Calibration Parameters:
- Problem: The 'Delta Wrt Parabolic Illumination' parameter should not exceed 0.040. If it exceeds this value, the calibration fails.
- Solution: Follow our cleaning and maintenance principles🔗 and our calibration best practices🔗 by ensuring you are using a clean, bright white paper or consolidated calibration card under the heating grid and that the glass plate is free from dirt or smudges. If the issue persists, contact us at support@delvotest.com.
Here’s a report showing how exceeded calibration parameters, like the 'Delta Wrt Parabolic Illumination' (0.172), can lead to failure:
Outdated Software or Device Settings
- Problem: On older devices, the intensity of average grey value may drop over time, causing calibration failures. For instance, if the value falls below 80, the device may not calibrate properly.
- Solution: If the average grey value drops below 80, the device may need to be replaced. If it's between 80 and 81, a software update may fix the issue — here's how you can do that🔗.
Summary
Regular uniformity calibration checks are crucial for maintaining your device's accuracy and reliability. Cleaning the device, monitoring key parameters like the 'Delta Wrt Parabolic Illumination', and keeping your software up-to-date are essential steps to ensure calibration success. If the issue persists, we pride ourselves at giving you hassle-free, fast support: so just contact us directly at support@delvotest.com with information about your issue, and wherever possible your device's serial number (here's where you can find it🔗 - out of date link).
💬 Got any questions? Need help? Get in touch at support@delvotest.com