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NB3711
NRSW-Benutzerhandbuch - Version 4.6.0.100
4.3. Installation of the WLAN Antennas
The following table shows how to connect the WLAN antennas. The number of attached antennas can
be configured in the software. If only one antenna is used, it must be attached to the main port. Ho-
wever, for better diversity and thus better throughput and coverage, we highly recommend using two
antennas.
Antenna Port
WLAN 1
WLAN 1
WLAN 2
WLAN 2
Attention: Following points must be observed when installing the antennas:
– A minimum clearance of at least 40 cm between people and the antennas must always
be ensured.
– If one WLAN interface transmit simultaneously with other collocated radio transmitters
the separation distance of 20 cm between the antennas must be maintained at all
times.
– WLAN antennas must only be installed in buildings or within vehicle hulls.
– WLAN antennas may have an amplification of maximum 3dBi in the relevant frequency
range. WLAN antennas with a higher amplification may be used with the NetModule
router Ënhanced-RF-Configurationßoftware license and the antenna gain and cable
attenuation that have been correctly configured by certified specialized personnel.
4.4. Installation of the GPS Antenna
The GNSS antenna must be mounted to the connector GNSS. Whether the antenna is an active or
passive GPS antenna has to be configured in the software. We recommend active GPS antennas for
highly accurate GPS tracking.
Attention: Following points must be observed when installing the antenna:
– A minimum clearance of at least 40 cm between people and the antenna must always
be ensured.
– Antennas which are installed outside a building or the vehicle hull must limit transient
overvoltages (according to IEC 62368-1) to below a peak of 1500 V through external
protection circuits.
A5 (top)
A6 (bottom)
A7 (top)
A8 (bottom)
Tabelle 4.2.: WLAN antenna port types
40
Type
Main
Auxiliary
Main
Auxiliary
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