patiam
Core User of DJI
Flight distance : 1118740 ft
United States
Offline
|
I was helping a colleague learn the ropes with his newly inherited P4R the other day when we ran into an interesting glitch. He updated all fw to latest versions the night before.
I showed him how to set up and connect to the D-RTK 2 first. That went fine.
Then we went to switch to "Custom RTK Network" (NTRIP). I had him hotspot his phone & get the RC on that connection (this works in the U.S.A.). I walked him through the painful process of entering the NTRIP host adress, port, mountpoint, username, and password. That all went well. He got connected to my NTRIP caster and got RTK Fixed right away. Or at least that's what we thought from the info in the RTK configuration cotrol panel.
When he went to create an autonomous mission and fly it using the NTRIP source for corrections, the main GUI upper left status area showed "Unable to take off - Weak RTK Signal". Also, a red traiangle exclamation popup in the main gui persistently said "RTK Position Error, RTK base station error (0x8400). Please check the base station.,Restart" (this despite being accompanied by the good status message "Network RTK server connection successful"; Fig 1). But when we wentback to the RTK contol panel, everything was still good. Server connected, RTK Fixed, position SD 1-2.5 cm. Even the diagnose RTK showed all green (Fig 2). So either the main GUI or the other was wrong.
Fig 1
Fig 2
We used an NTRIP client on an independent mobile device to verify that my caster was working OK. We tried another NTRIP caster - same behavior. We tand got the same issueried switching back to the D-RTK 2 and got the same issue.
If we turned off RTK completely we were ready to go with uncorrected GNSS(Fig 3).
Fig 3
We rebooted everything and tried again. D-RTK 2 was fine. A/C RTK Fixed Ready to Take Off. Tried to switch to NTRIP and got the same weird conflicting indicators.
Cycled power again and tried NTRIP FIRST this time. Victory! All green RTK happy and ready to fly.
SO: there seemds to be an issue on at least this P4R where you get one shot at setting up RTK per session. It will work with either D-RTK 2 or NTRIP, but YOU CAN'T SWITCH WITHOUT CYCLING THE POWER.
I don't know if anyone else has encountered this, but I'm wondering if some posts here where folks are unable to get NTRIP working might be related...
It's only a job-killer if you don't know the workaround, which is inconvenient but easily doable.
Anyway if you've seen this behavior please chime in...
|
|