2N VoiceBlue Next v3.1 - Manual (Page 21)

21
2N TELEKOMUNIKACE a.s., www.2n.cz
®
Caution
The rear and upper connecting plates have different holes – the
upper plate holes are larger and without threading.
Make sure that the plate does not get into the device to avoid
electric short–circuit inside the GSM gateway.
Leave 2 cm free space at least over and under the GSM gateway
for better ventilation (airflow)!
Power Supply Connection
Use only the power supply adapter included, or, with the power over Ethernet, a
certified PoE adapter to feed the gateway. Make sure that the electric distribution
network voltage is in compliance with the data on the supply adapter plate before
plugging the adapter. First plug the supply adapter into the mains socket and
only then
connect the adapter connector to the gateway. Refer to the status indicators.
Warning
Connecting a defective or inappropriate power supply adapter
may lead to a temporary or permanent 2N VoiceBlue Next
®
error!
Never connect using the PoE and a local 2N VoiceBlue Next
®
adapter at the same time to avoid permanent 2N VoiceBlue
®
malfunction! Next
Check whether the antenna is connected before plugging the
adapter. Feeding the device without antenna connection
may result in the GSM module transmitter damage.
Antenna Connection
2N VoiceBlue Next
®
is equipped with a SMA female antenna connector for all the
GSM/UMTS modules. The external antenna should always be installed vertically on a
site with a good wireless signal.
Warning
Tighten the antenna – connector gently with your hand
! never use a wrench
Being a source of radio frequency emissions, the 2N
®
antenna should not occur in the close vicinity VoiceBlue Next
of the human body. The
is higher than with health hazard
mobile phones as, generally, gateways shared by multiple users
show a very high traffic.