The shorter the feed line, the better. RipEX can be installed right next to the antenna and an ethernet
cable can be used to connect it to the rest of the installation and to power the RipEX . An ethernet cable
can also be used for other protocols utilising the serial port, see
Advanced Configuration, Terminal
server
. This arrangement is recommended especially when the feed line would be very long otherwise
(more than 15 meters) or the link is expected to operate with low fading margin.
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.
6.4. Grounding
To minimise 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 RipEX 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.
A lightning protector should be used where the antenna cable enters the building. Connect the protector
to the building grounding, if possible. All grounds and cabling must comply with the applicable codes
and regulations.
6.5. Connectors
RipEX uses standard connectors. Use only standard counterparts to these connectors.
You will find the connectors’ pin-outs in chapter Section 4.2, “Connectors”.
6.6. Power supply
We do not recommend switching on the RipEX’s power supply before connecting the antenna and
other devices. Connecting the RTU and other devices to RipEX while powered increases the likelihood
of damage due to the discharge of difference in electric potentials.
10 – 30VDC
+
+
+10 to +30 V
Fig. 6.10: 10–30 VDC Supplying
RipEX
may
be
powered
from
any
well-filtered
10 to 30 VDC power source. The supply must be capable
of providing the required input for the projected RF output.
The power supply must be sufficiently stable so that
voltage doesn’t drop when switching from receiving to
transmission, which takes less than 1.5 ms. To avoid radio
channel interference, the power supply must meet all
relevant EMC standards. Never install a power supply
close to the antenna.
63
© RACOM s.r.o. – RipEX Radio modem & Router
Installation
