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48
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Parameter
Options
Description
Sync Angle
0° to 360°
Phase lock angle
·
To activate this function, check the checkbox and input an azimuth.
·
At every full second, the lidar will rotate to that azimuthal position.
Lidar azimuthal position is defined in Section 1.2 (Lidar Structure).
Definition of full second
·
When GPS is locked: the rising edge of the GPS PPS signal
·
When PTP is tracking or locked: retrieved from the PTP master clock
·
When neither GPS nor PTP is locked: the rising edge of the lidar's internal 1
Hz signal
·
Detailed in Appendix II (Absolute Time of Point Cloud Data)
To phase-lock multiple lidars
·
Connect the lidars to the same clock source and set the same sync angle, and
these lidars will rotate to that same azimuthal position at every full second.
Trigger Method
Time-Based (default)
Angle-Based
The way laser firings are triggered.
Angle-based
Lasers fire every 0.2° at 10 Hz or 0.4° at 20 Hz.
Time-based
Lasers fire every 55.56 us.
Noise Filtering
OFF (default)
ON
To mitigate the scattered false positives (i.e. noise points) in point cloud data.
Summary of Contents for Pandar40M
Page 1: ...www hesaitech com HESAI Wechat Pandar40M 40 Channel Mechanical LiDAR User Manual...
Page 17: ...15 2 Setup 2 1 Mechanical Installation Figure 2 1 Front View Unit mm...
Page 18: ...16 Figure 2 2 Bottom View Unit mm...
Page 19: ...17 2 1 1 Quick Installation Figure 2 3 Quick Installation...
Page 20: ...18 2 1 2 Stable Installation Figure 2 4 Stable Installation...
Page 27: ...25 2 3 2 Connection Figure 2 10 Connection Box Connection with GPS...
Page 28: ...26 Figure 2 11 Connection Box Connection with PTP...
