Ag Leader Integra Users Manual - Manual (Page 292)

276 Firmware Version 5.4
• N
Refers to Nitrogen being applied.
• N Algorithm
The OptRx Crop Sensor Module uses an N algorithm to calculate an N rate through a Sufficiency Index
reading.
• Rate Increment (shown at Crop Sensor Setup)
An optional increment that the display can use to round the N rate applied, if the operator desires. For
example, if the operator enters the number 5 and the display is applying a rate of 27, the number will be
rounded to 25.
• Reference Strip
The healthiest portion of your field where you are satisfied that N is sufficient. This allows a baseline of
optimum crop performance that the system can compare against other cropland.
• Reflectance
The light reading of the plant measured by individual light spectral wavelength. The comparison of different
reflectance values can be used to determine the health of the plant.
• VI
Vegetation Index. The recorded value from remote sensing that displays a comparison of crop vigor and
biomass of the scanned plant. This value, which is taken from a reference scan of a Reference Strip, uses
a ratio that indicates the health of the plant. NDVI and NDRE are examples of different vegetation indexes.
• VI Minimum (shown at Settings screen)
The threshold below which the Crop Sensor applies the minimum rate. This setting is used to apply a
minimum amount of N on ground with damaged or diseased crops.
• VI Reference (shown at Settings screen)
The value of a healthy crop biomass used in reference for calculating the proper N application rate. The VI
Reference value is determined by the creation of a Reference Strip.
• VI Zero (shown at Settings screen)
The threshold below which the Crop Sensor applies a zero rate. This setting is used to prevent applying N
over bare ground or permanently damaged crops.
T
ROUBLESHOOTING
O
PT
R
X
E
RROR
M
ESSAGES
The OptRx Crop Sensors have error messages to inform the user of complications in communication
and performance. The following error messages are the most common ones. Follow the recommended
troubleshooting steps to correct these errors.
Error Message: “Sensor Lost Communication”
Possible Cause: The cabling between the OptRx sensor and the ACS Master Module is
disconnected.
NDVI Normalized Difference Vegetation Index =
Near Infared Reflective - Red Reflective
Near Infared Reflective + Red Reflective
NDRE Normalized Difference Red Edge =
Near Infared Reflective - Red Edge Reflective
Near Infared Reflective + Red Edge Reflective