IMPORTANT: Mobile-RTK correction source status bars (E) and (F) displayed in red while StarFire iTC status bars (I), (J) and (K) are displayed in green clearly identifies a StarFire Mobile-RTK failure. In this case, check your settings again (Correction Type (D) and RTK Serial Port Configuration (C)) and contact your John Deere dealer.

NOTE: Status bars (E) and (F) are green in case of Mobile-RTK correction streaming or red when no Mobile-RTK correction streaming is detected during MCMA.

• (F) Base Location: Indicates the reception of the next base station reference position data within the provider network.
• (G) Data Received (kb): Indicates the total of data received. Calculation starts once the connection is accepted and used by StarFire.
• (H) Duration of Connection (hr): Indicates the duration of connection. Calculation starts once the connection is accepted and used by StarFire.

  NOTE: Data (G) and duration (H) totals do not accumulate if correction messages are not recognized or received for more than MCMA.

(B) System Status - StarFire iTC

Operator can view the following:

NOTE: GPS accuracy (I), GPS signal quality (J) and differential signal quality (K) are also displayed on StarFire iTC main - INFO tab screen (see INFO tab-Mobile-RTK in GS2 Display-StarFire iTC Section).

• (I) GPS Accuracy Indicator (GPS AI): GPS AI gives indication of GPS position accuracy achieved

by receiver, and is displayed as a percentage (0-100%)

When receiver is initially powered, GPS AI will display 0%. As receiver acquires satellites and calculates a position, GPS AI will increase as accuracy improves. Acceptable guidance performance for Parallel Tracking and AutoTrac is achieved when GPS AI displays 80% or greater. This may take up to 20 minutes. GPS accuracy is affected by many factors. If 80% accuracy or greater is not achieved within 25 minutes, consider the following possibilities:

• Unobstructed view of sky › trees, buildings, or other structures may block receiver from receiver signals from all available satellites.
• L1/L2 signal to noise ratio (SNR) › radio interference from 2-way radios or other sources may cause low SNR (check satellite button I › Graph)
• Satellite position in sky › poor GPS satellite geometry can reduce accuracy (check satellite button I › SkyPlot)
• Number of satellites above elevation mask › this is the total number of GPS satellites available to receiver that are above 7 degrees elevation mask (check satellite button I › SkyPlot).
• Number of satellites in solution › this is total number of satellites that are being used by receiver to calculate a position (check satellite button I › SkyPlot).

• (J) GPS Signal Quality: Displays quality of signals being received from constellation of GPS satellites.
• (K) Differential Signal Quality: Displays quality of differential correction signal being received by receiver.

(C) RTK Serial Port Configuration:

Allows the operator to configure the RS232 serial port setting and NMEA message (L). Press Configure button (M) to proceed (see Mobile-RTK Port Configuration Subpage in this Section).

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