Question

For RUT955 GNSS - What is the maximum NMEA messages forwarding rate over IP/Ethernet and over RS232/RS485 ?

Can it meet 1Hz or more output rate ?

Is there other interface on RUT955 that can output the GNSS receiver NMEA directly with low latency ?

Do you have other Teltonika Cellular modem + GNSS that support this ?

Thanks.

Answer 1

Hello, 

Regarding the NMEA data sending frequency depends on your configuration about NMEA collecting and forwarding you can get more information on this link: RUT955 GPS - Wiki Knowledge Base | Teltonika Networks (teltonika-networks.com)

For the RS232 and RS485 we do support NTRIP client the NMEA data will be based on the GPS collection and forwarding settings also. 
You may refer to this link: RUT955 RS232/RS485 - Wiki Knowledge Base | Teltonika Networks (teltonika-networks.com)

The LTE module inside RUT955 EC25 supports standard NMEA-0183 protocol, and outputs NMEA sentences at 1Hz data update rate via USB interface by default. 

Regards,
Jerome

Comments

When using NMEA IP forwarding of RS232/485 forwarding what will be the average/max delay  between the LTE module NMEA-0183 sentence till the  NMEA-0183 sentence will be on the RUT955 Ethernet or RS232/485 output lines ?

Can I expect that such delay would be <100mSec ?

Thanks,

/Adi

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Hello,

We don't have the exact data but if you test it will be like sent continuously. Depending of the number of collecting and forwarding records you have configured.

Regards,

Jerome

Answer 2

Hello,

How to change the interval of NMEA data collecting could be found here: RUT955 GPS - Wiki Knowledge Base | Teltonika Networks

You can set it to collect every 1 second (1hz) and it will send you your data without any hiccups.

EB.