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3.7 LUMINOUS INTENSITY MEASUREMENT
(cd MODE)
Push [cd] switch to enter cd mode in which Luminance intensity value appears.
(An example showing that the Luminance intensity is 338.0cd)
Luminous intensity=󲔧C.C.F. × illuminance󲔨× L2
Lthe distance from light source to the illuminance meter
󲔧lx…[m],fc…[feet]󲔨
If the distance data has not been entered, the distance data entry screen appears.
How to enter distance data
1
Push [cd] switch to enter cd mode.
2
Enter numerical value and push [SET] switch to activate the distance data.
The distance unit is "m (meter)" for "lx", and "ft (feet)" for "fc"
3
Distance data you entered appears for 3 sec. and then, cd mode start.
Enter the distance data from 0.001 1000.
Error code E7 appears if you enter 0 as reference illuminance data.
Error code E3 appears if the calculated value is over the measurement range.
Push [cd] switch twice to reset distance data.
Distance data is deleted after turning off.
Distance data once you entered is saved till reenter the distance data or turning
off.
Reference plane is the front of IM-600 body or tip of sensor window of IM-600M
Entering numerical value 3.1 NUMERIC ENTRY
Setting procedure 3.5.1 SETTING PROCEDURE
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