SAME SILVER 100.4 - Onboard Radar; Precautions Regarding Electronic Apparatus

Onboard radar
The "ONBOARD RADAR" emits some signals thereafter providing
measurement of both the transmitted signal frequency and the
return signal frequency.
The latter changes depending upon the impact speed of the pulse
against one target (DOPPLER effect) and according to ground
nature and condition, consequently the radar will be able to
transmit certain parameters to the electronic control unit.
The processing of these signals through the onboard computer
will enable the real tractor advancing speed to be defined.
Fig. 14 - Onboard radar.
ELECTRONIC POWER-LIFT SAFETY PRECAUTIONS
Electronic equipment as well as a number of very delicate electronic components are installed on the tractor.
These latter in particular, do not tolerate any inversion of polarity, overvoltage, connection error, etc.
These electronic apparatuses are equipped with both internal and external protecting devices, however, the following
should be observed:
– Before performing any operations with any electric components switch off the instrument panel.
– Absolutely avoid using either screwdrivers or lamps to detect current; use proper diagnosing instruments only
(such as testers).
– Connectors should be either connected or disconnected without forcing. Never use screwdrivers to prize when
disconnecting and always keep to correct polarity when connecting.
– If a fault is located within an area controlled by the centre electronic control unit, do not replace the control unit at
once, but first check both sensors and actuators for correct operation.
– When replacing defective an electronic control unit loosen the securing screws only and avoid loosening other
screws which may be parts covering different functions, such as setscrews.
– Make sure neither sensor nor connector contacts have oxidized.
Specification
read-out capacity 0,4 to 70 km/h
accuracy
±
1%
output signal 36,6
Hz
km
⁄
h
o 132
imp
m
supply voltage 9
÷
16 V cc
weight 2 kg
manufacturer p. ex.Dickey-John
59
5
vehicle
electronic power-lift
259
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