Velodyne VLP-16 - Page 5

5.4 Connections 30
5.4.1 Integrated Cable and Interface Box 31
5.4.2 Operation Without an Interface Box 31
5.4.3 Power 31
Chapter 6 • Key Features
6.1 Calibrated Reflectivity 32
6.2 Laser Return Modes 32
6.2.1 Single Return Modes: Strongest, Last 32
6.2.2 Multiple Returns 33
6.2.3 Dual Return Mode 33
6.3 Phase Locking Multiple Sensors 37
Chapter 7 • Sensor Inputs
7.1 Power Requirements 39
7.2 Interface Box Signals 40
7.3 Ethernet Interface 41
7.4 GPS, Pulse Per Second (PPS) and NMEA GPRMC Message 41
7.4.1 GPS Input Signals 41
7.4.2 Electrical Requirements 41
7.4.3 Timing and Polarity Requirements 41
7.4.4 GPS Connection Scenarios 44
7.4.4.1 Connecting a Garmin 18x LVC GPS Receiver 44
7.4.4.2 Connecting to a computer's serial port 44
7.4.4.3 Connecting to a microcomputer’s UART 45
7.4.5 NMEA Message Formats 46
7.4.5.1 Pre-NMEA Version 2.3 Message Format 46
7.4.5.2 NMEA Version 2.3 Message Format 47
7.4.6 Accepting NMEA Messages Via Ethernet 48
Chapter 8 • Sensor Operation
8.1 Firing Sequence 49
8.2 Throughput Calculations 49
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