User Calibration; About User Calibration <User Calib> Tab; User Calibration Procedure - Konica Minolta CA-410 Series Instruction Manual

User calibration

1. About user calibration <User Calib> tab
• User calibration allows users to set their own correction coefficients to the calibration channel of the probe by measuring
any colors and setting calibration values to the probe. After setting, the values corrected with the specified correction
coefficients can be displayed and output for every measurement.
• As user calibration, you can select single-point calibration or RGB+W matrix calibration.
• User calibration can be performed for every calibration channel (except for CH00).
• User calibration cannot be performed for CH00 because it is calibrated in accordance with the Konica Minolta calibration
standard.
• You can use user calibration to apply the following corrections to measurements based on the specified correction
coefficients.
• Correct the difference in the reading due to the inconsistencies in the spectral response of the light-receiving element
of the probe.
• Correct the difference in the readings between probes used simultaneously.

2. User calibration procedure

• Click the [User Cal] button on the chromaticity measurement screen to open the pop-up window for user calibration.
• The calibration channel (CH00 to CH99) data is read from the probe before displaying the pop-up window.
• As calibration channel data, the ID, target probe, calibration probe, calibration mode, Lv,x,y, calibration date/time, and
comments are displayed.
• A user calibration coefficient is written to the specified calibration channel. If a coefficient is already written in that
calibration channel, it is overwritten.
• The target value used is written to a calibration channel as its target. If target data is already written in that calibration
channel, it is overwritten.
• Performing zero calibration by clicking the [0-CAL] button is recommended before running a calibration.
• Data written to the calibration channel can be saved and read as a file for each channel.
Task selection tabs
Calibration
mode
2-1. RGB+W matrix calibration
(1) Select the [Calibration] tab.
(2) Select the calibration channel to be calibrated. (CH01 to CH99)
• Click over the calibration channel data.
(3) As calibration mode, select [RGB+W Matrix]. Repeat the following steps, (4) through (6), for Red, Green, Blue, and
White.
• You can start from any color (Red, Green, Blue, or White) when performing steps (4) to (6). As an example, the
following explains how to measure Red and enter a target.
Calibration channel data
Pre-calibration Measurement
values button
Selected channel
Post-calibration
values
60
Calibrate