No GPS fix on

RE: No GPS fix on

SP — Thu, 25 May 2023 08:47:28 GMT

Hi Charlie,

Ok I will follow your advise !

RE: No GPS fix on

Charlie — Thu, 25 May 2023 08:12:50 GMT

Hi Stephane,

Great! Thanks for your update!

I encourage you to switch to the nRF Location service instead of using SUPL. nRF Cloud A-GPS has some advantages compared with the SUPL library.

Best regards,

Charlie

RE: No GPS fix on

SP — Wed, 24 May 2023 15:46:50 GMT

Hi Charlie,

Thanks for your reply.

1) I can't do this beacause antenna are soldered.

2) No. But Antennova have defined the matching (compoment arround the GPS antenna) in their labo

3) No, all prototypes only by the factory

This morning I decided to use SUPL library to assist GPS and now all prototypes works and they can get GPS fix after 15 seconds.

SUPL it's magic !

RE: No GPS fix on

Charlie — Wed, 24 May 2023 14:03:24 GMT

Hi Stephane,

Your reduce accuracy setting looks like no problem.

The issue you mentioned sounds more hardware related.

1) Did you try to switch GPS antenna of good and problem samples?

2) Did you request hardware design be reviewed for your hardware design before?

3) Have you soldered all the prototype samples by yourself or at the factory?

Best regards,

Charlie

RE: No GPS fix on

SP — Tue, 23 May 2023 12:34:09 GMT

Thanks for your reply.

Almanac are already downloaded by assistance minimal at the start of application.

after 10 x minutes of GPS searching, here the last log :

PRN:7 | C/N0:42.0 | In Fix:0
PRN:27 | C/N0:40.8 | In Fix:0
PRN:10 | C/N0:35.5 | In Fix:0
PRN:18 | C/N0:32.6 | In Fix:0
PRN:8 | C/N0:39.5 | In Fix:0
PRN:26 | C/N0:24.6 | In Fix:0
PRN:21 | C/N0:26.2 | In Fix:0
PRN:3 | C/N0:24.6 | In Fix:0

It's the same thing !

RE: No GPS fix on

Turbo J — Tue, 23 May 2023 12:05:10 GMT

Try waiting for 30 minutes.

Download of the GPS Almanac can take >15 minutes when using GPS only.