Gems LDS4, Operation Manual, Page: 51 / 71

45 Co-Driver Functionality
© 2009 General Engine Management Systems Ltd.
Co-Driver Functionality
9
The LDS4 has features that allow it to be used by a co-driver in a rally car. The co-driver
functionality is implemented as follows:
· Additional inputs for buttons. The behaviour of each button is fully user configurable.
· Built in real-time clock with stopwatch and split time functions. The stopwatch can be started
automatically when a particular output such as Road Speed changes.
· Distance countdown trip meters.
·
Fuel used outputs.
· Trip meters.
Note that since the co-driver functionality implements an event driven system, these features can
also be used to implement non-co-driver functions such as jumping to an alarm page when an
alarm is triggered.
The LDS4 can receive button inputs either from an analogue input or via the CAN. See
Configuring the
Button Press Mechanism for more information.
9.1 Enabling Co-Driver Functionality
To enable co-driver support, select Setup | Co-driver | Setup to show the co-driver setup screen:
Check Enable co-driver functionality to enable co-driver support. The other options in this
dialog box define the basic inputs for the co-driver functions:
· Fuel defines the input used to calculate total fuel, trip fuel and fuel used. The fuel input can
either be a Fuel Level input (which decrements as fuel is used) or a Fuel Used input (which
increments as the fuel is used). Select the appropriate type with the radio button.
· Distance defines the input used to calculate trip distance and countdown distance. This
should be in either km or miles.
· Stop Watch Trigger defines the input used to trigger the stopwatch start. This will usually be
road speed or distance so that the stopwatch starts as soon as the car starts moving.