We would like to use the PPS signal for an IoT Expansion Card (pin 37). What are the requirements for the PPS signal to start? Is firmware or a cellular backhaul needed? Number or distance-accuracy of GPS fixes?
I did not see any PPS signal after powering on and performing several rough GPS fixes (under 50% successful with 1km accuracy from my window).
AT!GPSFIX=1,120,1000
GPSLOC?
Lat: {lat}
Lon: {lon}
Time: 2022 11 09 2 20:54:25 (GPS)
LocUncAngle: 61.8 deg LocUncA: 59 m LocUncP: 16 m HEPE: 61.131 m
3D Fix
Altitude: 49 m LocUncVe: 96.0 m
Heading: 0.0 deg VelHoriz: 0.0 m/s VelVert: 0.0 m/s
