Categories Time and Frequency uBlox F9T test Post author By admin Post date September 21, 2019 3 Comments on uBlox F9T test Test of the 1PPS stability of an uBlox F9T dev-kit RCB-F9T Tags f9t, gnss, ublox ← Länsirastit Kasavuori → Iltarastit Solvalla 3 replies on “uBlox F9T test” Try configuring IT to do a survey-in for 24h. And select GPS L1 and L2 only, turn off the other GNSS and SBAS. The survey is under time mode TM5. I haven't yet tested mine against UTC or a Maser (soon), but two units against each other show those 10 ns excursions while they're free moving. When their position is frozen, as the survey ends, they achieve 1.5 ns 1-sigma variation between them, with a few ns offset. Looking forward to getting my hands on the new F9T dev kits... The phase offset plot does not look great; did you use the quantisation / sawtooth corrections and what were the conditions and config - stationary mode, in motion? @Thomas thanks, this gives me a good picture of what to expect from the F9T. I have selected GPS L1 and L2, with most (all?) other systems disabled. Otherwise this I did not touch any settings. I don't know if it performs a survey and then goes into fixed mode all on its own - or does it have to be manually set to survey? and then fixed? with these same settings we should have a longer dataset which I can post results from in the next few days. This is with a longer antenna cable, so offset by +100ns or so. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website This site uses Akismet to reduce spam. Learn how your comment data is processed.