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Features The PR-520 (pr-524 and pr-522) System combines illuminance {with pr-524 - utlizing true cosine correction) and luminance (with pr-522) measurement capabilities - unique for handheld pholomelers and colorimeters The PR-521 (pr-525 and pr-523) System adds color (CIE 1931 xy, CIE 1976 uV. Correlated Color Tempﭩrature and dominant wavelength) to the list of capabilities. The pr-521 lets you add up to six sets of color correction factors to maxi-mize accuracy when measuring exotic sources. Accurate measurements of pulsing or rptitive sources is assured with the SYNC feature of the pr-520...

Pass / Fail Rgions (pr-525 or pr-521 only) When the application calls for a fast. easy to use go / no color gauge, the PR-525 (or PR-521) features a user definable (in cie 1931 x, y coordinates) PASS / fail color space (ha, following a measurement. instantly displays whether the sample does or does not meet the criteria, The color space can be deflned as a four sided polygon (square, rectangle or non equal sided shape) via the PASS / FAIL Setup Menu, Following a measurement, if the cie 1931 x. y chro-maticity point falls within the space defined by the four corners specified during setup, PASS...