@pete said in NTP / PPS GPS_ntpd - Time Error - PPS Jitter Exceeded:
@bingo600
So does that mean the default option should be "unticked"?
The kernel PPS is more "picky" , and the NTP PPS ought to be good enoguh for timekeeping.
Not getting any PPS Jitter Exceeded log entries on the SureGPS and U-Blox GPS with PPS.
I did purchase two more U-Blox modules with old firmware.
One of them flashed fine to current firmware and the other said it did not recognize the flash memory.
Identifying receiver updater version at 115200 baud.
Firmware loader version 5.01 detected.
Suitable Multi-ROM image found
Check pass: u-blox8 Multi-ROM image -> u-blox8 ROM2.01-receiver
No valid FW header found in Flash: 0x00000000.
Identifying Flash
Flash: ManID=0x68, DevID=0x4013
Flash device not supported
Done in 6.4 sec.
Statistics:
Erases sent: 0
Writes sent: 0
Erase timeouts: 0
Write timeouts: 0
and the other one worked:
$GNTXT,01,01,02,ANTSTATUS=OK*25
18:00:44 $GNTXT,01,01,02,u-blox AG - www.u-blox.com*4E
18:00:44 $GNTXT,01,01,02,HW UBX-M8030 00080000*60
18:00:44 $GNTXT,01,01,02,EXT CORE 3.01 (107900)*33
18:00:44 $GNTXT,01,01,02,ROM BASE 2.01 (75331)*19
18:00:44 $GNTXT,01,01,02,FWVER=SPG 3.01*46
18:00:44 $GNTXT,01,01,02,PROTVER=18.00*11
18:00:44 $GNTXT,01,01,02,FIS=0xEF4015 (84524)*67
18:00:44 $GNTXT,01,01,02,GPS;GLO;GAL;BDS*77
18:00:44 $GNTXT,01,01,02,SBAS;IMES;QZSS*49
18:00:44 $GNTXT,01,01,02,GNSS OTP=GPS;GLO*37
18:00:44 $GNTXT,01,01,02,LLC=FFFFFFFF-FFFFFFED-FFFFFFFF-FFFFFFFF-FFFFFF69*23
18:00:44 $GNTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*3E
18:00:44 $GNTXT,01,01,02,ANTSTATUS=OK*25
18:00:44 $GNTXT,01,01,02,PF=3FF*4B
Buying those can be a "lottery"
I like the "Older" LEA-5T , as it's designed for timing (The T at the end), and at a price i can afford (will pay)
https://www.ebay.com/itm/254603722675
LEA-6T or 8T are nicer but a lot pricier , and the 5T is good enough for me.
Beware , the Antenna plug is SMB M (you'd want a SMB F to SMA F adapter)
https://www.ebay.com/itm/202466110634
And the connector plug is 2mm , but easy enough to solder on. If you don't have any 2mm plugs & ribbon cable.
You can "Sneak" 2.54mm Dupont wires into the plug , but it's a tight fit.
/Bingo