Output data format
The SPEED100 outputs both CAN and Serial data, as detailed below.
CAN Output
The SPEED100 can output a variety of CAN messages, using Race Technology’s CAN data message format. These messages are output selectable rates per channel of up to 100Hz.
A detailed description of the Race Technology CAN data format, including the message contents and the default addressing scheme, can be found on the knowledge base on the Race Technology web site here. .DBD files can be generated from the configuration software. The SPEED100 supports both 11 and 29bit addressing, Bitrates are configurable at a number of rates from 20kbit to 1Mbit.
CAN output can be configured to be either as soon as available, in which case the latency will be variable, or at a fixed latency of 20s. This applies to the reception of the first message of each epoch, relative to the epoch time. Latency can only be guaranteed if the SPEED100 is the only transmitter on the CAN bus.
The following CAN messages are available for output from the GPS2:
Serial Output
The GPS2 has 3 serial and 1 USB ports. Usage and baud rate is summarised in the table below:
| Port
| Baudrate
| Function
|
| Serial
| 115200/460800
| Race Technology messages
|
| Modem
| 4800-115200
| RTCM input
|
| NMEA
| 4800-460800
| NMEA message output
|
| USB
| NA
| Configuration / reflash / live data monitor
|
The main serial ports used to output serial data to other Race Technology equipment, such as the DL2 data logger.
The following messages are transmitted at 100Hz.
NMEA messages available are as follows:
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