You can enter commands down at the bottom. You just enter hexadecimal values as 2-digit pairs separated by a space. The command for setting all NMEA messages at a 1 second interval would be {10 7A 00 01 00 00 01 1F 10 03}. The fourth byte (the first 01 above) is the interval in seconds (from 1 to 255). The 7th and 8th bytes (01 1F) specify the NMEA messages to send. the low bit of the 7th byte is for the RMC message. The 8th byte is as follows:
| Bit | NMEA Message |
|---|---|
| 0x01 | GGA |
| 0x02 | GLL |
| 0x04 | VTG |
| 0x08 | GSV |
| 0x10 | GSA |
If the message is accepted then you should get a response that looks very much like what you sent except instead of the 0x7A in the 2nd byte, you'll see 0x7B which is the response packet for a 0x7A command.
If you want to save settings, send the following command {10 8E 26 10 03}
If you want to double-check the port settings, you can issue the command {10 BC FF 10 03}. A typical response would be {10 BC 00 07 07 03 01 00 00 02 02 00 10 03} referencing page A66.
| Byte | Item | Setting |
|---|---|---|
| 0 | Port | 0=Port 1 1=Port 2 0xFF=Current |
| 1 | Input Baud | 2=300 3=600 4=1200 5=2400 6=4800 7=9600 8=19200 9=38400 |
| 2 | Output baud | Same as above |
| 3 | Data bits | 2=7 3=8 |
| 4 | Parity | 0=None 1=Odd 2=Even |
| 5 | Stop bits | 0=1 bit 1=2 bits |
| 6 | Flow control | 0=None |
| 7 bit0 | TAIP input | 0=Off 1=On |
| 7 bit1 | TSIP input | 0=Off 1=On |
| 7 bit2 | reserved | 0 |
| 7 bit3 | RTCM input | 0=Off 1=On |
| 7 4-7 | reserved | 0 |
| 8 bit0 | TAIP output | 0=Off 1=On |
| 8 bit1 | TSIP output | 0=Off 1=On |
| 8 bit2 | reserved | 0 |
| 8 bit3 | RTCM output | 0=Off 1=On |
| 8 4-7 | reserved | 0 |
| 9 | reserved | 0 |