User Manual Part 1

Lynx.GX Installation and Management
Only one loopback can be enabled per link at a time; that is, only one channel can be tested at a time and
configuring a channel in loopback disables the current loopback. The front panel and Web interface loopback
LED on the near-end and far-end radios informs the operator that the radio is configured in loopback mode.
STEP 4. INSTALL THE RADIO UNITS
There are two primary ways to install the radio system.
IDU and RFU Indoor Mounting
Both units (the IDU and the RF Unit) are mounted indoors or in a suitable enclosure, stacked on top of one
another, in a rack.
IDU Indoor Mounting / RFU Outdoor Mounting
The IDU is mounted indoors and the RF Unit is mounted outdoors, either near the antenna or simply at a
location somewhere between the enclosure/structure egress point and the antenna.
Complete the installation of all cables and the antenna system prior to connecting power; refer to “Installing and
Adjusting the Antenna” on page 18 for important information.
Installing Both the IDU and RFU Indoors
Although rack-mounting of the IDU is the ideal configuration; the radio can be placed on a tabletop or a cabinet
shelf. To prevent movement, apply the rubber table mount feet, found in the GX IDU Installation Kit, under the
bottom of the radio at each corner.
For rack mounting, to optimize cabling and to avoid interference with the RFU or antenna cables, mount the IDU
high in a standard 19-inch rack. Empty rack-mounting spaces above and below the unit are recommended,
especially if the surrounding equipment dissipates a considerable amount of heat (over 40W).
When mounting both the IDU and the RFU indoors, mount the IDU immediately below the RFU with no gap
between the units. (The IDU provides required forced-air cooling of a rack-mounted RFU). Leave the equivalent
of one rack space above the total 2-unit space for the radio if any equipment is mounted above the radio
system.
Set up the radio for mounting (using the rack mounting brackets enclosed with the screws in the shipping
container) with the front edge projecting from the front face of a standard 19-inch rack. Alternatively, you can
reverse the rack-mounting brackets to install the unit at a flush position. Additional extension brackets are
provided for 23-inch rack mounting and are attached to the standard 19-inch rack flanges with screws provided.
The radio has internal fans that intake on the left side and exhaust on the right side of the chassis. When rack
mounting, leave a small gap between the outer edges of the radio and the inside edge of the rack.
A short 12” IDU-to-RFU interface cable (TNC to TNC) is included in the GX IDU Installation Kit. Use this cable
to connect the IDU to the RFU when both are installed indoors.
Chapter 2. Installing the IDU and RFU 14