Obdii Odometer Interface; Aftermarket Wheel Speed Sensor - Advanced Navigation Spatial Dual Reference Manual

automotive electrician to perform the work.
To setup the odometer, the appropriate GPIO pin should be set to odometer input
using Spatial Dual Manager. The odometer pulse length must then be set either
manually or automatically, please see section 10.8 for more information.
For more information on the GPIO signals and their requirements please see section
12.3.3.
9.7.2

OBDII Odometer Interface

For applications where it is undesirable to modify the vehicle or the system needs to
be used with multiple vehicles, the OBDII odometer interface may be a better solution.
OBDII is a vehicle diagnostic port standard and most vehicles from the mid 1990s
onwards contain an OBDII port in the drivers side foot well. Advanced Navigation
produces an OBDII odometer interface that plugs into this OBDII port and feeds Spatial
Dual with odometer data over the Auxiliary RS232 port, please see Illustration 19.
These units are priced at approximately AUD 500. Please contact Advanced Navigation
sales for more information.
Illustration 19: Advanced Navigation OBDII Odometer
9.7.3

Aftermarket Wheel Speed Sensor

Applications requiring very high performance are recommended to use a high
precision aftermarket wheel speed sensor. Advanced Navigation recommends
aftermarket wheel speed sensors from Kistler, Pegasem or GMH Engineering.
Spatial Dual Reference Manual
Page 40 of 137
Version 2.3
12/04/2016