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Re: F9* and GLONASS


From: John Ackermann N8UR
Subject: Re: F9* and GLONASS
Date: Wed, 6 May 2020 15:42:45 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 5/6/20 3:35 PM, Gary E. Miller wrote:

> Still looking.  I saw a summary, but nothing complete from you, migh
> have fat fingered it.  Fastest to just resend.

OK, here is the text of my earlier message (sent at 1702 UTC).  You
should see cut-and-paste of my terminal sessions below the "++++" signs.


I'm getting strange results trying to enable GLONASS using ubxtool.

Transcript below, but in summary:

sending -e GLONASS to the F9P sends a message to enable L1, but a
following poll does not show GLONASS is still disabled.

sending -e GLONASS to the F9T sends a message to enable L1, and a
following poll shows that GLONASS L1 is enabled, but not L2.

So... is there a reason to enable only L1 and not L2, and is there a
reason why the command works on the F9T to enable L1, but not on the F9P?

Could the difference be related to my earlier question, i.e. the F9T is
using the ASYNC port via a USB converter, while the F9P is using its own
USB port?

Thanks,
John

++++
F9P (using prot 27.10):

jra@lintty:~$ ubxtool -w 1 -P 27.10 -p MON-VER ::/dev/ttyACM0
ubxtool: poll MON-VER

sent:
UBX-MON-VER:
  Poll request

UBX-MON-VER:
  swVersion EXT CORE 1.00 (94e56e)
  hwVersion 00190000
  extension ROM BASE 0x118B2060
  extension FWVER=HPG 1.11
  extension PROTVER=27.10
  extension MOD=ZED-F9P
  extension GPS;GLO;GAL;BDS
  extension QZSS

jra@lintty:~$ ubxtool -w 1 -P 27.10 -e GLONASS ::/dev/ttyACM0
ubxtool: enable GLONASS

sent:
UBX-CFG-GNSS:
 msgVer 0  numTrkChHw 0 numTrkChUse 255 numConfigBlocks 1
  gnssId 6 TrkCh  8 maxTrCh 14 reserved 0 Flags x00010001
   GLONASS L1 enabled


jra@lintty:~$ ubxtool -w 1 -P 27.10 -p CFG-GNSS ::/dev/ttyACM0
ubxtool: poll CFG-GNSS

sent:
UBX-CFG-GNSS:
  Poll request

UBX-CFG-GNSS:
 msgVer 0  numTrkChHw 60 numTrkChUse 60 numConfigBlocks 5
  gnssId 0 TrkCh  8 maxTrCh 16 reserved 0 Flags x11110001
   GPS L1C/A L2C enabled
  gnssId 2 TrkCh 10 maxTrCh 18 reserved 0 Flags x21210000
   Galileo E1 E5b
  gnssId 3 TrkCh  4 maxTrCh  5 reserved 0 Flags x11110000
   BeiDou B1I B2I
  gnssId 5 TrkCh  0 maxTrCh  3 reserved 0 Flags x11110001
   QZSS L1C/A L2C enabled
  gnssId 6 TrkCh  8 maxTrCh 12 reserved 0 Flags x11110000
   GLONASS L1 L2

++++
F9T (using prot 29.00):

jra@lintty:~$ ubxtool -w 1 -P 29.00 -p MON-VER ::/dev/ttyUSB0
ubxtool: poll MON-VER

sent:
UBX-MON-VER:
  Poll request

UBX-MON-VER:
  swVersion EXT CORE 1.00 (71b20c)
  hwVersion 00190000
  extension ROM BASE 0x118B2060
  extension FWVER=TIM 2.01
  extension PROTVER=29.00
  extension MOD=ZED-F9T
  extension GPS;GLO;GAL;BDS
  extension SBAS;QZSS

jra@lintty:~$ ubxtool -w 1 -P 29.00 -e GLONASS ::/dev/ttyUSB0
ubxtool: enable GLONASS

sent:
UBX-CFG-GNSS:
 msgVer 0  numTrkChHw 0 numTrkChUse 255 numConfigBlocks 1
  gnssId 6 TrkCh  8 maxTrCh 14 reserved 0 Flags x00010001
   GLONASS L1 enabled

jra@lintty:~$ ubxtool -w 1 -P 29.00 -p CFG-GNSS ::/dev/ttyUSB0
ubxtool: poll CFG-GNSS

sent:
UBX-CFG-GNSS:
  Poll request

UBX-CFG-GNSS:
 msgVer 0  numTrkChHw 60 numTrkChUse 60 numConfigBlocks 6
  gnssId 0 TrkCh  8 maxTrCh 16 reserved 0 Flags x11110001
   GPS L1C/A L2C enabled
  gnssId 1 TrkCh  2 maxTrCh  3 reserved 0 Flags x01010000
   SBAS L1C/A
  gnssId 2 TrkCh 10 maxTrCh 18 reserved 0 Flags x21210000
   Galileo E1 E5b
  gnssId 3 TrkCh  4 maxTrCh  5 reserved 0 Flags x11110000
   BeiDou B1I B2I
  gnssId 5 TrkCh  0 maxTrCh  3 reserved 0 Flags x15050001
   QZSS L1C/A L1S enabled
  gnssId 6 TrkCh  8 maxTrCh 12 reserved 0 Flags x11010001
   GLONASS L1 enabled






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