Hesai Pandar64 User Manual

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For the GPS PPS signal, the pulse width is recommended to be over 1 ms, and the cycle is 1 s (rising edge to rising edge).
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Before connecting or disconnecting an external GPS signal (either using the cable's GPS wire or via the connection box's GPS port), make
sure the lidar is powered off.
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If the lidar has to stay powered on, make sure to ground yourself in advance. Do NOT touch the GPS wire or GPS port with bare hands.
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.
Pandar64
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Hesai Pandar64 Specifications

General

Brand	Hesai
Model	Pandar64
Category	Measuring Instruments
Language	English