Lynx.GX Installation and Management
Connecting IF Coax Cable
The radio can be installed with the RFU mounted indoors above the IDU in a 19-inch or 23-inch rack, or
mounted outdoors onto the pole-mounted bracket (included).
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For indoor mounting, a short IF coaxial cable is included in the accessory kit to connect the IDU to the RFU.
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For indoor/outdoor mounting, a long IF coaxial cable is required to connect the IDU to the RFU outdoors. In
such a case, the same cable installation, grounding, surge-protection (except using NexTek PTC series
surge protectors and the appropriate cable type) as described above applies. In addition, a low-loss RF
transmission line is required to run the RF signal from the RFU to the antenna (located outdoors atop a
tower, monopole, rooftop pole, or cell site).
For indoor/outdoor mounting configurations, the connectors on both ends should be TNC (male) to TNC (male).
Multiple cables can be used to accomplish IDU-to-egress and egress-to-RFU connections.
Be sure that a
proper lightning protection device is installed at the building cable egress point.
See “Planning For and Selecting IF Cable” on page 53 for cable recommendations.
Connecting Power
The radios do not have a power on/off switch. When you connect the DC power, the unit powers up and is
operational in about one minute.
Note:
When first powered up, the second LED from the left column lights up red, then the bottom one flashes
red. If these conditions continue after one minute, there is a problem powering up the radio and the unit
should be returned.
There can be up to 200mW of RF power present at the RFU antenna port.
Before power is applied:
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Terminate the antenna port (either by connecting the RFU to an antenna or to an appropriate 50-ohm load,
such as provided by a fixed RF attenuator).
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Connect the cable between the IDU and the RFU.
The IDU can be powered separately (with no cable or RFU present), but do not connect the RFU without
removing power first; then connect the IDU-to-RFU cable and re-apply power.
WARNING!
Connect all cables between the IDU and the RFU before applying power to the IDU— Do not apply DC power to the
IDU if the RFU antenna connect is not terminated. Likewise, remove power from the IDU before removing any
cables between the two units.
DC voltage is conducted on the IF coaxial cable; improper installation of the cable while power is applied could
result in damage to the equipment. Be sure to read “Product Safety Instructions” in Chapter 2 before installing this
product.
Power is connected using the terminal block connector contained in the accessory kit. The terminal connector is
a 3-pin mating connector.
Use the pin information listed in following tables, along with the associated figures, to wire the terminal and
connect the DC power supply properly. For DC power return connection, connect to the opposite voltage (either
the -DC or the +DC Pin).
Chapter 2. Installing the IDU and RFU
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