5.4 Connections
30
5.4.1 Interface Box and Cable
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 Sentence
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
46
7.4.4.3 Connecting to a microcomputer’s UART
46
7.4.5 NMEA Message Formats
47
7.4.5.1 Pre-NMEA Version 2.3 Message Format
47
7.4.5.2 NMEA Version 2.3 Message Format
48
7.4.6 Accepting NMEA Messages Via Ethernet
49
Chapter 8 • Sensor Operation
8.1 Firing Sequence
50
8.2 Throughput Calculations
50
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