NB3000-Line-Hd User Manual 4.2
Information about the device interfaces:
• All systems that are connected to the NetModule router interfaces must meet
the requirements for SELV (Safety Extra Low Voltage) systems.
• Interconnections must not leave the building nor penetrate the body shell of
a vehicle.
• Connections for antennas may only exit the building or the vehicle hull if
transient overvoltages (according to IEC 62368-1) are limited by external pro-
tection circuits down to 1 500 V
peak
. All other connections must remain within
the building or the vehicle hull.
• Always keep a distance of more than 40 cm from the antenna in order to
reduce exposure to electromagnetic fields below the legal limits.
• Devices with a WLAN interface may be operated only with applicable Regula-
tory Domain configured. Special attention must be paid to country, number
of antennas and the antenna gain (see also chapter
). The maximum
allowed gain is 3dBi in the relevant frequency range. WLAN antennas with a
higher amplification may be used with the NetModule router "Enhanced-RF-
Configuration" software license and the antenna gain and cable attenuation
that have been correctly configured by certified specialized personnel. A mis-
configuration will lead to loss of the approval.
• Cellular antennas attached to the router must have an antenna gain of equal
or less than 2.5 dBi. The user is responsible for the compliance with the legal
regulations.
• Only CE-compliant power supplies with a current-limited SELV output voltage
range may be used with the NetModule routers.
1
1
Note:
Power supplies for routers with the Pb option (72-110 V
DC
) cannot be a SELV circuit, since the voltage is
greater than 60 V
DC
.
3
