Operation OEM6 Cards and Enclosures
Chapter 4
OEM6 Family Installation and Operation User Manual Rev 12
64
4.5
Configuration Notes
For compatibility with other GNSS receivers and to minimize message size, use the standard form of RTCA,
RTCM, RTCMV3, CMR+ or CMR corrections shown in the base and rover examples above. This requires
using the
INTERFACEMODE
command to dedicate one direction of a serial port to one message type only.
When the
INTERFACEMODE
command is used to change the mode from the NOVATEL default, the NovAtel
format messages can no longer be used.
To mix NovAtel format messages and RTCA, RTCM, RTCMV3 or CMR messages on the same port, leave
the interface mode set to NOVATEL and log out variants of the standard correction messages with a NovAtel
header. ASCII or binary variants can be requested by appending an A or B to the standard message name.
For example, on the base station:
interfacemode com2 novatel novatel
fix position 51.11358042 -114.04358013 1059.4105
log com2 rtcaobs2b ontime 2
At the rover, leave the interface mode default settings (interfacemode com2 novatel novatel). The rover
recognizes the default and uses the corrections it receives with a NovAtel header.
The
PSRDIFFSOURCE
and
RTKSOURCE
commands set the station ID values that identify the base stations to
accept pseudorange or RTK corrections from. They are useful commands when the rover station is receiving
corrections from multiple base stations.
4.6
Enabling SBAS Positioning
OEM6 family receivers are capable of SBAS positioning. This positioning mode is enabled using the
SBASCONTROL
command:
sbascontrol enable auto
When the command is entered, the OEM6 family card automatically tracks the SBAS that is operating in the
region (e.g., WAAS or EGNOS) and applies the corrections from the service. On a simulator, leave the test
mode parameter off or specify NONE explicitly. For more on SBAS, refer to application note
Positioning Modes of Operation
(additional Application Notes available at
).
1. Interface mode must be set to NOVATEL for the receiver to issue logs with an A or B suffix.
2. Using the receiver in NOVATEL mode consumes more CPU bandwidth than using the
native differential messages as shown in
Section 4.3.1, Base Station Configuration
3. To find information on how to send multiple commands and log requests using DOS or
Windows, search our knowledge database available at