Iveco DAILY M.Y. 2012, Body Builder Instructions

Page: 182 / 252

5-28
SPECIAL INSTRUCTIONS FOR ELECTRONIC SUBSYSTEMS D
AILY
Base - 02/2012 Printed 603.95.241
Electrical system: modifications and drawing-off power
5.4.2 Electromagnetic compatibility
We recommend that electrical, electro-mechanical and electronic devices which comply with the following immunity
requirements for electromagnetic emissions, both irradiated and conducted are used:
The level of electromagnetic immunity of the electronic devices equipping the vehicle, at a distance of 1 metre from the transmitting
aerial must be:
- 50 V/m immunity for devices performing secondary functions (not impacting on direct vehicle control), for frequencies varying
from 20 MHz to 2 GHz;
- 100 V/m immunity for devices that carry out primary functions (impacting on direct vehicle control), for frequencies varying from
20 MHz to 2 GHz.
The maximum excursion allowed for transition voltage with equipment powered by 12 V is +60 V measured on the terminals of
the artificial network (L.I.S.N.) if tested on the bench. Alternatively, if tested on the vehicle, the excursion must be read at the most
accessible point near to the conflicting device.
Devices powered by 12 V must be immune to negative interference such as -300 V spikes, +100 V
positive spikes, bursts of +/-150 V.
They must operate correctly during the phase when voltage drops to 5 V for 40 ms and 0 V for 2 ms.
Moreover, they must resist the load dump phenomena up to 40 V.
NOTE
The maximum radiated emission levels measured at the bench and levels of conducted emissions generated by devices and also
by 12 V power supplies are given in the following table:
Table 5.6
Type of
emission
Type of
trans-
ducer
Type of
disturb-
ance
Type of
detector
Frequency range and limits acceptable by noise in dB
μ
V/m
Unit
of mea-
sure
150 kHz
300 kHz 530 kHz
2 MHz
5.9 MHz
6.2 MHz 30 - 54
MHz
68-87
MHz
mobile
services
only
76-108
MHz
broadcast
only
142-175
MHz
380-512
MHz
820-960
MHz
radiated Aerial at
a
distance
of 1
metre Broad-
band Nearly
peak
63 54 35 35 24 24 24 31 37
dB
μ
V/m
radiated Broad-
band Peak
76 67 48 48 37 37 37 44 50
radiated Narrow-
band Peak
41 34 34 34 24 30 24 31 37
conducted LISN
50
Ω
5
μ
H
0.11
μ
F
Broad-
band Nearly
peak
80 66 52 52 36 36
Not
applicable
dB
μ
V
conducted Broad-
band Peak
93 79 65 65 49 49
conducted Narrow-
band Peak
70 50 45 40 30 36
Use electrical/electronic equipment in compliance with the EC Directives on electromagnetic compability, i.e use suitable
components for vehicle applications ”e.” marked (the EC marking is not sufficient).