Monit Rally G-100 User manual

G-100/200 Operation
& Installation

2

3
Contents
7 Installation
15 Getting Started
16 GPS Mode Setup
18 Wheel Sensor Mode Setup
20 Fuel Calibration
23 Basic Operation
24 Telemetery Screen
27 Entering a Distance
28 Measurement Units
28 Turning On & Off
29 Advanced Features
30 Customising the Telemetry Screen
31 Using the Sprint Timer
34 Auxiliary Inputs
35 Stage Recorder
39 Troubleshooting

4
GPS+ Overview
The G-100/200 can measure distance and speed using either the GPS
signal or a traditional wheel speed sensor. For most customers GPS
alone will provide excellent results with accuracy comparable to a well
calibrated wheel sensor.
However, like any GPS system, accuracy can be degraded when
operating in heavily built-up areas or under dense forest cover. To
address this limitation the G-100/200 includes unique GPS+ sensor
fusion technology. This works by combining the output signals
from a wheel sensor and the GPS receiver. While the GPS signal is
available the GPS+ software continously calibrates the wheel sensor
in the background. If the GPS signal is subsequently lost operation is
automatically switched to the wheel sensor. The result is uninterrupted
high accuracy operation in any environment without the need to
manually calibrate a wheel sensor.

5
GPS Only
Wheel Sensor Only
GPS+ Sensor Fusion
Mode
Note: To use the GPS+ function simply install a wheel sensor as well as
the GPS antenna. The software will automatically detect the sensor.

6

7
Warning:
Installation of the G-100/200 may require modifications to be made to
your vehicle’s electrical system. If this is not done correctly, expensive
damage may be caused to both the product and your vehicle. It
is strongly recommended that you seek the services of a qualified
automotive electrician to carry out this work.
Installation

8
Step 1: Before You Start
Check that you have the items shown below. You will also need a selection of
tools, wiring equipment, and a suitable place to work.
(A) Rally Computer (B) Wiring Loom
(C) GPS Antenna and/or Wheel Speed Sensor (ref. page 4)
Installation
(A)
(C)
(B)

9
Step 2: Fitting to the Vehicle
Securely attach the rally computer to the interior of your vehicle. The most
common locations for this are either on the dashboard directly in front of the
co-driver or on the passenger door frame.
When fitting the device, ensure that:
It will not come free of its mounts during an accident. There are two•
M4 bosses on the back that can be used to fasten it securely.
It does not interfere with any of the vehicle’s safety equipment.•
The co-driver can operate it comfortably while seated.•
Warning: If the vehicle still has airbags fitted, do not place the device over the
covers from which these are deployed. Doing so could result in serious injury in
the event of a collision.
Installation

10 Installation
RED
BLACK
WHITE (Aux. A)
BROWN (Aux. B)
Speed Sensor
Connector
GREEN
Step 3: Electrical Connections
The G-100/200 connects to your vehicle’s electrical system through the color-
coded wiring loom supplied with it. Connect this loom as shown.

11
RED
BLACK
WHITE (Aux. A)
BROWN (Aux. B)
Speed Sensor
Connector
GREEN
Installation
Connect to a 12 Volt power source that is
able to supply power even when the ignition
is turned off.
Use a common ground point for all parts of
the circuit. Do not use the vehicle’s chassis.
(Optional) Attach up to two hand or foot
switches to use the Auxiliary Inputs. See
Page 11 for more details.
(Optional) Wheel Sensor Connector Details:
BLUE - Signal
ORANGE - +5V
BLACK - 0V
(G-200 only) Connect to the output of your
vehicle’s fuel sender.
+12V
0V
Monit Speed
Sensor

12 Installation
GPS Antenna
If GPS is going to be used to measure speed and distance you will need to fit
a suitable antenna. There is a range of these available from Monit. The antenna
attaches to the device using the SMA connector on the back. Refer to the
information supplied with your antenna for detailed instructions.
Wheel Speed Sensor
If GPS is not going to be used, or you want to make use of the GPS+ sensor
fusion technology (see Page 4), you will need to supply a wheel speed signal
to the rally computer. There is a special connector on the wiring loom for this
purpose. It will connect directly to the range of wheel sensors available from
Monit, and detailed installation instructions are supplied with each sensor.
Auxiliary Inputs
These can be used to attach up to two hand or foot switches to the unit. You
can then configure each switch to perform a range of useful functions, such
as clearing the distance or controlling the stopwatch. For most functions a
normally-off momentary type switch should be used.
See page 28 for more information.

13Installation
Fuel Sender Signal (G-200 only)
To use the G-200’s fuel measurement system, connect the output signal from
your vehicle’s fuel sender directly to the green wire on the loom.
Points to note during installation are:
The G-200 works by measuring the output voltage of your vehicle’s fuel•
sender. It can be used with signals that either rise or fall with increasing
fuel level.
If you remove your factory fuel gauge you will need to fit a resistor of•
approximately the same value in its place to power the sender.
Many factory fuel senders will not produce an output signal when the•
ignition is turned off.

14
Step 4: Final Checks
Before you apply power to the system check that all your electrical connections
are correct. Also make sure that any exposed wires in the circuit are covered
with insulation tape or heat-shrink so they will not short against the chassis.
Installation

15
The G-100/200 has an easy to use graphical user interface that
makes operation simple and efficient. Read through this section to
learn how to quickly setup and configure the unit after powering it
up for the first time.
Getting Started

16 Getting Started - GPS Mode
GPS Mode Setup (default)
Once you have finished installing the unit and GPS antenna apply power to
the unit to start it up. The first menu to appear will prompt you to select an
operating language (you can change this later on). Following this the main
telemetry screen (see page 24) will appear.
Before any measurements can be made the GPS receiver must first obtain a
satellite signal lock. To indicate the status of this process an icon is shown in
the lower left corner of the telemetry screen. This flashes ‘GPS’ when no lock
is available and changes to ‘GPS’ once a signal lock is obtained. Once lock is
established the G-100/200 is ready to use.
Interval
Distance
Counter
GPS
Status

17Getting Started - GPS Mode
Notes:
During initial power up (cold start), or if the unit has been disconnected•
for a long period of time, it may take up to 12 minutes to obtain an initial
satellite lock.
If GPS+ sensor fusion technology is being used, the wheel sensor will•
be used while GPS lock is being obtained to provided uninterrupted
operation.
You can view the status of the GPS system by navigating to the ‘GPS Setup’
item in the main menu.

18
Wheel Sensor Mode Setup
If you only want to use a traditional wheel sensor instead of the GPS system
to measure distance and speed you will have to disable the GPS receiver and
then perform a calibration of the wheel sensor against a known distance before
the unit can be used.
To disable the GPS receiver, select ‘GPS Setup’ in the main menu and toggle
the ‘Enable’ option to the off position.
If you already know the pulse/km calibration value for your vehicle, you can also
enter this value manually. Refer to page 36 for details.
Getting Started - Wheel Sensor Mode

19
Distance Calibration
If the GPS is not being used, you will need to perform a calibration of the
wheel speed sensor before it can be used. The device includes a special
calibration wizard that guides you through this process using simple on-screen
instructions.
To calibrate the distance (only possible if GPS is disabled):
Find a piece of road with an accurately known distance. Use a distance of1.
at least one mile/kilometre for best results.
From the Main Menu select Calibration > Cal. Distance to start the2.
calibration wizard.
Follow the instructions on the screen.3.
Note: The device will not lose its calibration if the power supply is disconnected.
Getting Started - Wheel Sensor Mode

20
Fuel Calibration (G-200 only)
The G-200’s fuel measurement system is designed to work with a wide range
of tank sizes and shapes. Before it can be used, the system must be calibrated
to suit your particular vehicle. This is done using a special calibration wizard
that guides you through the process using simple on-screen instructions.
To calibrate the fuel system:
Find a safe place to add and remove fuel from your vehicle. To perform1.
the calibration, you will need enough fuel to fill the tank completely and a
5-10 litre container that you can use to measure the amount of fuel being
added.
Empty all the fuel from the tank.2.
From the Main Menu select Calibration > Cal. Fuel to start the calibration3.
wizard.
Follow the instructions on the screen.4.
Getting Started