DRAIN HOLE
DOWN
CONECTOR WITH
WATER-PROOFING TAPE
ANTENNA
HEIGHT
COAX LOOP
ANTENNA
VER. 4
LIGHTING
ARESTOR
RADIOMODEM
PWR
TX
RX
ETH
232
STATUS
R
E
POE – IEEE802.3af (long line)
MAST
TECHNOLOGY
Fig. 6.4: Supplying power over the ethernet interface directly from the technology
The layout of installation showed at ver. 4, i.e. when the radio modem is placed up on the mast (or
close to it), provides the valuable advantage of having a short antenna feeder (see section Antenna
installation). Remember that the ethernet cable has to meet the PoE standard requirements
(IEEE802.3af).
Adaptéry pro napájení RE400
Fig. 6.5: Pasive PoE injector
INPUT
10,8–30 V DC
+
RE
PWR
RS232
RE400 SIDE
RS232
RS232 POWER
ADAPTOR
REPWR
Fig. 6.6: REPWR adaptor
6.4. Technology connection
The Data Terminal Equipment, a programmable controller, a PC or any other device communicating
over the radio network, has to be connected to the radio modem by a data cable to the serial or the
Narrowband radio modem ECONOMY RE400 – © RACOM s.r.o.
32
Radio modem installation