Nortek Dvl Input; Left Wheel Speed Sensor; Right Wheel Speed Sensor; 1Pps Input - Advanced Navigation Spatial Reference Manual

configuration please contact support@advancednavigation.com.au.
12.4.27

Nortek DVL Input

This function accepts DVL data in the Nortek DVL binary format. It accepts the packets
0x1B (DVL Bottom Track) and 0x1D (DVL Water Track). The recommended update rate
is 8Hz.
12.4.28

Left Wheel Speed Sensor

This function is designed for the left wheel of a vehicle with dual wheel speed sensors.
12.4.29

Right Wheel Speed Sensor

This function is designed for the right wheel of a vehicle with dual wheel speed
sensors.
12.4.30

1PPS Input

This function is designed to allow external GNSS receivers to synchronise time with
Spatial. It triggers on a transition from low to high.
12.4.31

Wheel Speed Sensor

This function is designed for high resolution vehicle speed sensors and wheel speed
sensors. It expects a normally low input with a high state for the trigger. If the pulse
length is more than 0.1 metres the odometer input function should be used, if it is less
than 0.1 metres the wheel speed sensor function should be used. Please contact
Advanced Navigation support for help integrating with your speed sensor.
Parameter
Trigger
Maximum Frequency
Maximum Pulse Rate
Table 23: Wheel Speed Sensor Specifications
12.4.32

Wheel Encoder Phase A

This function is designed for rotary incremental quadrature encoders. It should be
used in combination with Wheel Encoder Phase B.
12.4.33

Wheel Encoder Phase B

This function is designed for rotary incremental quadrature encoders. It should be
used in combination with Wheel Encoder Phase A.
12.4.34

Event 1 Input

This function is designed to allow external events to be recorded inside Spatial's
Spatial Reference Manual
Page 99 of 158
Version 4.4
04/06/2019
Value
Low → High
40 MHz
4,294,967,295 pulses/metre