Spectra Precision ProMark 800 Reference Manual - Manual (Page 117)

105
Troubleshooting
Once the receiver is set to function in RTK (i.e. RTK firmware
option has been enabled), it will compute RTK quality
positions. In order to accomplish this, the rover must collect
raw satellite data at its position and also receive RTK
correction data transmitted by the base. Without these two
components, the rover will not be able to fix RTK position
solutions.
To determine if the rover is computing a fixed position, you
can read the General Status screen (2nd parameter in upper
line).
Using either the display screen or your field terminal, you
have determined that the rover system is not computing a
“Fixed” position. Follow the steps outlined below to
troubleshoot this problem.
Step 1. Is the
Radio Receiving
Base Data?
To determine if the rover is receiving base data, examine the
2nd line on the General Status screen. The Data Link icon
should be visible. Refer to Radio Data Link Fails to Provide
Base Corrections to Rover on page 101 if you need to fix this
problem, and then come back to this procedure.
Step 2. Is the
Receiver Tracking
satellites?
Use either the front panel of the receiver or the field software
running on your field terminal to determine if the rover is
tracking satellites.
• If the receiver is not tracking satellites, refer to Receiver
is Not Tracking Satellites on page 98 and then come back
to this procedure.
• If the receiver is tracking satellites, go to step 3 below.
Step 3. Are The
Base and Rover
Tracking at least 5
Common
Satellites?
In order for the rover to compute an RTK position, the base
and rover must observe data from at least 5 common healthy
satellites simultaneously. Without this common data, the
rover cannot compute an RTK position.
Use the receiver front panel or the field terminal to determine
if the base and rover are indeed tracking at least 5 common
healthy satellites.
1. If the base and rover are not tracking at least 5 common
satellites:
• Check satellite availability. Use GNSS Planning ( http:/
/www.spectraprecision.com/support/gnss-planning/ ) to
check satellite availability for your current location and
time. Look for the number of satellites available higher