Monit Rally G-100+ User manual

G-100+/200+Operation
& Installation

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Contents
7 Installation
15 Getting Started
16 GPS/GNSS Mode Setup
18 Wheel Sensor Mode Setup
20 Fuel Calibration
23 Basic Operation
24 Telemetry 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
32 Auxiliary Inputs
34 Stage Recorder
39 Troubleshooting

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GPS/GNSS+ Overview
The G-100+/200+ can measure distance and speed using either
the GPS/GNSS signal or a traditional wheel speed sensor. For most
customers GPS/GNSS alone will provide excellent results with accuracy
comparable to a well calibrated wheel sensor.
However, like any GPS/GNSS 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/
GNSS+ sensor fusion technology. This works by combining the output
signals from a wheel sensor and the GPS/GNSS receiver. While the
GPS/GNSS signal is available the GPS/GNSS+ software continuously
calibrates the wheel sensor in the background. If the GPS/GNSS 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.
GPS/GNSS Only
Wheel Sensor Only
GPS/GNSS+ Sensor Fusion
Mode
Note: To use the GPS/GNSS+ function simply install a wheel sensor
as well as the GPS antenna. The software will automatically detect the
sensor.

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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

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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 (see page 4)
Installation
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
(A)
(C)
(B)

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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.
Installation
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 12 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

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Installation Installation
GPS/GNSS Antenna
If GPS/GNSS 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/GNSS is not going to be used, or you want to make use of the GPS/
GNSS+ 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 32 for more information.
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.

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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
Read through this section to learn how to quickly setup and configure
the unit after powering it up for the first time. If you are using GPS
to measure distance and speed go to page 16. If you are using a
traditional wheel speed sensor go to page 18.
Getting Started

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Getting Started - GPS/GNSS Mode
GPS/GNSS Mode Setup (default)
Once you have finished installing the unit and GPS/GNSS 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/GNSS 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.
Getting Started - GPS/GNSS 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/GNSS+ sensor fusion technology is being used, the wheel sensor•
will be used when the GPS/GNSS signal is not available to provide
uninterrupted operation. It may take 1-2km after startup before the GPS+
system is initialised.
You can view the status of the GPS/GNSS system by navigating to the ‘GPS
Setup’ item in the main menu.
GPS/GNSS
Status

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Wheel Sensor Mode Setup
If you want to use a traditional wheel sensor instead of the GPS/GNSS
system to measure distance and speed you will have to disable the GPS/
GNSS receiver and perform a calibration of the wheel sensor against a known
distance before the unit can be used. After powering up the unit and selecting
a default operating language (this can be changed later on) the setup can be
performed using the menu system.
To disable the GPS/GNSS receiver, select ‘GPS Setup’ in the main menu and
toggle the ‘Enable’ option to the off position.
Next you will need to perform a calibration. If you already know the pulse/km
calibration value for your vehicle, you can also enter this value directly. Refer to
page 36 for details. Otherwise continue to the next page.
Distance Calibration
If the GPS/GNSS 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:
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 Getting Started - Wheel Sensor Mode