Timing requirements of GPS PPS and GPS Serial Data (NMEA)
GPS PPS: signal cycle t3 = 1 s ± 50 μs (rising edge to rising edge)
GPS PPS: pulse width t1 ≥ 1 ms (10 to 100 ms recommended)
Timing relationship NMEA signal starts after the PPS rising edge of the current second, and ends after the PPS falling edge of the
current second, as shown by the gray arrows in the figure above.
NMEA signal ends before the PPS rising edge of the next second; t2 ≥ 100 ms.
2.2.2. Bending of cables
Outer diameter (OD) = 5.0 ± 0.20 mm
Minimum bend radius = 10 × OD
-28-
To Next Page
Loading...
General