Topcon Luminance Colorimeter BM-5AC, Инструкция по эксплуатации

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Appendix
91
Measurement Time
Approx. 2 seconds (This is the measurement interval in the SINGLE measurement mode.)
Analog Output Response Speed
(unit: ms approx.)
Range1 Range2 Range3 Range4 Range5
NORMAL 30
FAST 5 0.5 0.05 0.5 0.05
The response speed in the table above is the time that it takes analog output from the instrument
to reach 90% of the peak value, when measuring an LED driven by a square wave from a
function generator.
Luminance Unit
Candela per square meter (cd/m
2
)
Luminance Display Ranges
(unit: cd/ m
2
)
Measu
ring
Field
Range 1 Range 2 Range 3 Range 4 Range 5
3° 0.00005 to 0.15 0.0005 to 1.5 0.005 to 15 0.05 to 150 0.5 to 1 500
2° 0.0001 to 0.3 0.001 to 3 0.01 to 30 0.1 to 300 1 to 3 000
1° 0.0004 to 1.2 0.004 to 12 0.04 to 120 0.4 to 1200 4 to 12 000
0.2° 0.01 to 30 0.1 to 300 1 to 3 000 10 to 30 000 100 to 300 000
0.1°
0.04 to 120 0.4 to 1 200 4 to 12 000 40 to 120 000 400 to 1 200 000
The measurement ranges are indicated as approximate values since they depend on the
machining precision of the aperture mirror.
Even when luminances in the above ranges are being measured, measurement is sometimes not
possible depending on the measurement mode used. The cause of this trouble is that output of
X
2
and Zare over range, and it does not mean that the instrument is broken. Be careful when
measuring extreme red or blue colored light.
Luminance Accuracy
Within ±4% (AUTO range, A light source)
Guaranteed Accuracy Range
Measuring Field Guaranteed Accuracy Range
3° 0.005 cd/m
2
or more
2° 0.01 cd/m
2
or more
1° 0.04 cd/m
2
or more
0.2° 1 cd/m
2
or more
0.1° 4 cd/m
2
or more