8.2 Battery and voltage supply
The Motoscope require
“switched plus”
for the voltage supply. That means electrical
power will flow if ignition lock is switched “on”.
The
motoscope mini
can operate in a voltage
range from 7 V to 18 V DC. Operating the instrument without a battery, for example, using a
direct connection to the vehicle's generator, is not envisaged or recommended! Please
ensure that the polarity of the voltage supply is correct.
Attention!
The minimal supply cable width is 0,75mm². You
must
fuse the +12V power
supply cable with a 5A fuse. If device will be use without fuse, damage at the connecting
cable or the motoscope itself can cause a shortcut and a cable fire.
There may be risk of
your life!
Make sure you are capable to connect the instrument properly. If you are not sure,
let the shop do the job!
9 Installation and connection of sensors and the pushbutton
9.1 The pushbutton
To operate the instrument a pushbutton is to be connected. Therefore connect one of its
terminals with the green cable of the
motoscope mini
and the other one with earth (-).
Polarity is not relevant (see diagram in chapter 16.1).
9.2 Rev counter sensor cable
The rev. counter sensor cable is yellow. It transmits the signals from the ignition to the
device. Connect the yellow cable to the negative terminal (-) of one ignition coil or to the
corresponding terminal of the ignition box [clamp 1 or earth]. In the case of existing rev
counter output, connect the yellow cable directly with this output cable.
Attention!
This cable must not be connected to the high voltage output of the ignition
system!
Attention!
In case of a CDI ignition, the positive pole of the ignition coil must be connected!
9.3 Installation and connection of the speedometer sensor
The delivered speedometer sensor is a dry reed contact, which is triggered by a magnetic
field. Therefore, the delivered magnet must be attached to the wheel with the contained
epoxy glue. The speedometer sensor has to be attached to the vehicle by using a self made
holding bracket. The sensor tip has to be fastened parallel to the magnet's surface. The gap
between the magnet and the sensor must not exceed 5 mm and the sensor must not touch
the magnet or any other rotating parts. The sensor holding bracket has to be made
sufficiently stable in order to prevent any distance changes during any driving situations. The
maximum mounting torque of the sensor nuts is 2 Nm. For secure mounting we recommend
to use screw adhesive (medium strength). Subsequently, connect one cable of the
speedometer sensor with +12 V ("switched plus") and the other one with the white cable of
the motoscope mini. Polarity is not relevant.
If your vehicle provides an original speedometer sensor output that gives a +12V output
signal connect the white cable of the
motoscope mini
directly to this output.
Attention!
If one end of the delivered speedometer sensor is connected with +12V and the
other open end touching vehicle earth accidentally, the sensor will be destroyed.
Attention!
The magnet will defective, if it is exposed temperatures higher than 100°C or
212°F (i.e. hot brakes).
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