Measures the light's average luminance (DC) and effective flicker value (ACrms) to calculate and display the flicker ratio (ACrms/DC).  The flicker of base frequencies between 20 and 90 Hz can be measured by varying the programmable low-pass filter's cutoff frequency.
The flicker correction function enables conversions to flicker ratios (%, dB) defined by JEITA and VESA standards.

Flicker ratio	Programmable low-pass filter

The characteristics of the color filters in 3298F's photodetector approximate the CIE 1931 color matching functions, and the tester performs optimization calculations to minimize error. Each sensor is calibrated with a combination of a type A standard light source/threewavelength fluorescent lamp and color filters. The optimized coefficient calculated for each light source is used to enable high-precision color measurement.

CIE 1931 Color Matching Function
3298F Chomaticity Measurement (Example)
Type A standard light source + color filters	Three-wavelength fluorescent lamp + color filters

The 3298F displays RGBL levels for differences between Rm, Gm and Bm values (calculated from measured tristimulus values) and Rs, Gs and Bs values (calculated from the target color temperature/luminance) in real time. Displays can be djusted to the target color temperature/luminance by adjusting all their RGBL values to 100%.

CIE 1931 color matching functions		RGB color system (NTSC)
Measurement Example
Displaying difference between target color temperature/luminance and measured values   After adjusting RGBL values to 100%