20
Specifications
Measurement
Sample
Individual plant leaves
turf grass canopy
Measurement
System
Reflectance of 660 nm and 840 nm
light
Light Require-
ments
Natural sun light
Artificial light: 60 Hz AC tungsten or
halogen powered by DC current
Contact Spectrum for use with 50 Hz
AC (Europe)
Measurement
Area
Conical field-of-view between 28.4
and 183 cm
Measurement
Units
NDVI (Normalized Difference Vege-
tation Index) on a scale of –1 to 1
Logger Capacity
3250 readings without GPS/DGPS
1350 readings with GPS/DGPS
Repeatability
± 5% of measurement
Weight
1.5 lbs. (0.7 kg)
Temperature
Range
Operate in 32° to 104° F (0° to 40°C)
Power
Two AAA alkaline batteries
Approximately 3000 measurements
Environmental
Sealing
Dust-proof
