Seres Reference Manual
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If the e-Dif algorithms do not find that there has been sufficient data
collected, the Seres will send the following response:
$>JRAD,3,FAILED,Not Enough Stable Satellite Tracks
If you receive the failure message after a few minutes of operation, try again
shortly until the ‘OK’ acknowledgement message is sent. The e-Dif
application will begin operating as soon as the $JRAD,3,OK message has
been sent, however, you will still need to define a reference position for e-
Dif, unless relative positioning is sufficient for your needs.
5.7
Data Messages
The following subsections describe the NMEA data messages listed in Table
5-6 in detail.
Table 5-6 Data Messages
Message
Max Rate
Description
GPGGA
5 Hz
Global Positioning System Fix Data
GPGLL
5 Hz
Geographic Position – Latitude/Longitude
GPGSA
1 Hz
GNSS (Global Navigation Satellite System) DOP and Active
Satellites
GPGST
1 Hz
GNSS Pseudorange Error Statistics
GPGSV
1 Hz
GNSS Satellites in View
GPRMC
5 Hz
Recommended Minimum Specific GNSS Data
GPRRE
1 Hz
Range residual message
GPVTG
5Hz
Course Over Ground and Ground Speed
GPZDA
5 Hz
Time and Date
RD1
1 Hz
SBAS diagnostic information (proprietary NMEA message)
Note - For clarity, each data message will be presented on a new
page.
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