4.3. Antenna feed line
The antenna feed line should be chosen so that its attenuation does not exceed 3 to 6 dB as a rule of
thumb. Use 50 Ω impedance cables only.
The shorter the feed line, the better. If RipEX2 is installed close to antenna, the data cable can be re-
placed by an Ethernet cable for other protocols utilizing the serial port, see
.
Always follow the installation recommendations provided by the cable manufacturer (bend radius, etc.).
Use suitable connectors and install them diligently. Poorly attached connectors increase interference
and can cause link instability.
4.4. Grounding
To minimize the odds of the transceiver and the connected equipment receiving any damage, a safety
ground (NEC Class 2 compliant) should be used, which bonds the antenna system, transceiver, power
supply, and connected data equipment to a single-point ground, keeping the ground leads short.
The RipEX2 radio modem is generally considered adequately grounded if the supplied flat mounting
brackets are used to mount the radio modem to a properly grounded metal surface. If the radio modem
is not mounted to a grounded surface, you should attach a safety ground wire to one of the mounting
brackets or a screw on the radio modem’s casing.
It is strongly recommended to install an appropriate lightning protection system where the antenna
cable enters the building.
Note
All cablings, groundings and lightning protection must comply with the applicable standards
and regulations.
4.5. Full duplex operation
When the Full duplex operation is required, the Tx and Rx signals must be separated. The level of Tx
to Rx signal attenuation must be at least 70 dB or better. Such a high level of Tx to Rx signal attenuation
is typically achived by using a duplexer. Separate installation of Tx and Rx antenna can be used instead
of using a duplexer.
4.6. Connectors
RipEX2 uses standard connectors. Use only standard counterparts to these connectors.
You will find the pin-outs of connectors in
.
Explosive atmospheres
Please note that connectors - or their individual pins - are connected to the housing. The
housing is connected with the minus pin of the power connector.
37
© RACOM s.r.o. – RipEX2 Radio modem & Router
Installation
