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23
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The timing requirements of GPS PPS and GPS Serial Data (NMEA) are shown below:
PPS cycle
t3 = 1 s ±50 μs (rising edge to rising edge)
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 figure above.
NMEA signal ends before the PPS rising edge of the next second; t2 ≥ 100 ms.
2.2.2
Cables
OD (outside diameter) = 5.0±0.2 mm
Minimum bend radius: 10 * OD
NMEA
PPS
1
0
t1
t2
t3
Summary of Contents for PandarXT
Page 1: ...www hesaitech com HESAI Wechat PandarXT 32 Channel Medium Range Mechanical LiDAR User Manual...
Page 19: ...17 2 Setup 2 1 Mechanical Installation Figure 2 1 Front View Unit mm...
Page 20: ...18 Figure 2 2 Bottom View Unit mm...
Page 21: ...19 2 1 1 Recommended Installation Figure 2 3 Recommended Installation...
Page 29: ...27 2 3 2 Connection Figure 2 9 Connection Box Connection with GPS...
Page 30: ...28 Figure 2 10 Connection Box Connection with PTP...
