NB2800
User Manual for NRSW version 4.5.0.100
The following table shows how to connect the LTE/UMTS antennas. Generally, LTE antennas use both,
main and auxiliary ports, but UMTS requrires only main ports.
Antenna Port Type
MOB 1 A1 Main
MOB 1 A2 Auxiliary
MOB 2 A3 Main
MOB 2 A4 Auxiliary
MOB 3 A6 Main
MOB 3 A7 Auxiliary
MOB 4 A9 Main
MOB 4 A10 Auxiliary
Table 4.1.: LTE/UMTS antenna port types
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 mobile inerface transmit simultaneously with other collocated radio transmitters
the separation distance of 20 cm between the antennas must be maintained at all
times.
– 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.
– Mobile communications antennas may have an amplification of maximum 2.5dBi, in-
cluding the cable attenuation, in the relevant frequency range.
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.
However, for better diversity and thus better throughput and coverage, we highly recommend using
two antennas.
Antenna Port Type
WLAN 1 A9 Main
WLAN 1 A10 Auxiliary
WLAN 2 A6 Main
WLAN 2 A7 Auxiliary
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