Great Plains 3N-4020 Operator Manual - Manual (Page 102)

98 3N-4010F/3N-4010HDF/3N-4020F Table of Contents Index Great Plains Manufacturing, Inc.
196-359M Table of Contents Index 2013-10-29
GPS Troubleshooting
Troubleshooting GPS with SiteMate
1. No Rx rate appears on SiteMate
• Has field been selected? Select VRT file (see
SiteMate Settings, step 7, page 57)
• Check recipe to verify that it is valid by viewing
Attributes for each zone in SiteMate
• If recipe calls for zero rate as the default, do you
have GPS signal, or are you outside of field?
2. Rx rate appears on SiteMate, but no Applied Rate.
• Make sure “Go” button on SiteMate is pressed.
(button should read “Stop” when recipe is being
sent to GP Console)
• You must be planting in order for Applied Rate to
appear.
3. Rx rate appears on SiteMate but not on GP Control-
ler Console.
• Make sure GP Controller Console is set to VR
Mode (see Figure 37 on page 38).
• Double-check all cable connections
• Check Nominal rates on both the SiteMate (SiteM-
ate Settings, step 6, page 57), and on the GP
Controller Console (GP Settings, step 3, page 56)
These must be set to the same number.
4. Rates on GP Controller Console and on SiteMate do
not match.
• Check Nominal rates on both the SiteMate (SiteM-
ate Settings, step 6, page 57), and on the GP
Controller Console (GP Settings, step 3, page 56)
These must be set to the same number.
• Re-check GP calibration number, with metering
wheel and row spacing.
• The recipe rates from SiteMate are in 4% incre-
ments. If the two rates are within this 4% range,
the units are operating normally.
• Check the Conversion number (SiteMate Settings,
Step 2). If the recipe requires a target conversion
number, i.e. the recipe is for 25 which means
25,000 seeds/acre, the target conversion number
will be 1000. In this case the Nominal Rate in
SiteMate and the GP Console should be near
25,000. See SiteMate Settings, step 6, page 57 for
calculating Nominal Rate.
5. Population Monitor rate does not match GP Control-
ler Console.
• Make certain that SiteMate and GP Controller
Console agree. If not, see Troubleshooting step 4.
• Re-check GP calibration number, with metering
wheel and row spacing.
• Re-check planter monitor settings: calibration
number, row spacing, number of rows, swath
width, seed, etc.
• GPS signal is not being received by SiteMate:
• Verify that GPS serial port (which is also the dock-
ing port) is not set to PC connection only
(Start/Settings/Communications/PC Connec-
tions-check GPS settings in Configure/Set-
tings/GPS settings/COM (typically COM1, 4800
Baud, 8 data bits, Parity None, and Stop Bits 1)
• Click Data tab to view GPS details