INSTALLATION AND MAINTENANCE MANUAL
LYNX
E1 FAMILY
LICENSED & SPREAD SPECTRUM RADIOS
JUNE 2001
PAGE 3-62
SECTION 3: INSTALLATION & ADJUSTMENTS
3.13 System Turn-up to Service
1.
Prior to installing the system, it may be desirable to perform a back-to-back test of the
Lynx
radio pair. Consult Section 4.9 for further details. Back-to-back testing is a simple way to
verify that the
Lynx
radios are fully operational before they are installed. Installation adds
several variables (such as antenna alignment) which can lead to system turn-up delays. Also,
during back-to-back testing, the DIP switch settings and some connections can be tested.
This step can eliminate a majority of troubleshooting once the radios are installed.
A cellular phone or two-way radio system (walkie talkie, CB,
mobile radio) can be very useful during installation. These
can be used for temporary near-end and far-end
communications between the installation personnel at one
site and installation personnel at the other site while installing
the system. These can also be helpful for communication
between a person at the top of a very tall tower and ground
personnel.
The Lynx radio incorporates an internal Orderwire feature that provides
end-to-end “telephone” style communications. However, the link must be
partially operational to use this feature. In lieu of, or in addition to the
use of cellular phones or two-way radio, this Orderwire feature can also
be very useful for installation, but typically cannot be put into service
until step 8 or 9 of this procedure is completed. See Section 3.14.1 for
more details.
2.
Perform a general alignment of the antennas on both ends of the path using binoculars,
compass or other related tools. It is important to have the antennas aligned as accurately
as possible before putting radio traffic over the link. This will help in getting the system
running more rapidly. See Section 3.10 for more details.
3.
Connect the transmission line to the antenna, and feed it to the
Lynx
radio location (see
Section 3.9). Connect the opposite end of the transmission line to the N-type female
connector located on the filter assembly which occupies the top half of the
Lynx
rear panel.
The connection must be terminated into an antenna or a load before DC power is applied to
the radio.
4.
Verify that DIP switch settings for frequency channel selection match that of the filter that is
installed on the rear of the radio. Consult 3.12.1 for further details. The far-end radio must
have the same channel plan (e.g. A, B, C) as the near-end radio, and the opposite Tx and
Rx frequencies (e.g. A1 and A2 make up a matched pair of radios).
5.
Verify that the DIP switch settings for spreading code are the same for both ends of the
radio link (see Section 3.12.3).
6.
With the DC power source active, but not plugged into the
Lynx
radio, using a voltmeter,
confirm that the DC mating connector has the proper power connections in accordance with
Section 3.7. Verify the polarity and the absolute voltage on all pins. Verify ground
connection for power.
