DOC 6501_Release V
ATS-6501 Users Guide
9
# Dead time (optional)
# Bind address (optional)
#
#auth 192.0.2.100 shared_secret
#auth my_radius_server.example.com other.shared.secret
auth 123.123.123.123 password123
There are only 2 supported RADIUS user types: ‘admin’ and ‘non-admin.’ These can be set on
the RADIUS server when setting up each user and their passwords. See the example below for 2
users. In
raddb/clients.conf
file on the RADIUS server
,
‘bob’ will have admin privileges while
‘ted’ does not. The ‘Filter-Id’ attribute passes those privileges.
# A user with admin privileges
bob Cleartext-Password := "hello"
Filter-Id := "admin",
Reply-Message := "Hello, %{User-Name}"
# A non-admin user
ted Cleartext-Password := "goodbye"
Reply-Message := "Hello, %{User-Name}"
Note:
If you plan to set up local users, see section 3.5 before proceeding.
2.3 Antenna Installation
Installing the antenna properly requires careful planning. The antenna location itself must be
selected based solely on the ability to reliably receive the GPS Signal. This should be one of the
primary factors in selecting the installation location of this unit depending on the length of the
antenna cable.
Note:
The antenna cable should have less than 10 dB of loss at 1.5 GHz. If this is not possible
due to the cable type or length of cable then additional in-line amplifiers will be need to be
installed or you will need a cable type with less loss.
The antenna included with the ATS-6501 has a mounting screw on the bottom. The screw allows
the antenna to be easily and securely mounted on a 5/8” coarsely threaded rod. Threaded rods are
available at most hardware stores and will need to be mounted securely to the side of a building
or other stationary object. Once the rod is properly secured it will provide a stable mount for the
antenna.
2.3.1 Antenna Location
This unit is typically mounted in a standard 19” equipment rack but the unit may also be operated
from a bench top. No matter which location is chosen, the installation location should be selected
keeping in mind that access to a suitable antenna location will be necessary for proper operation.
A.
Placement of the GPS antenna is extremely important. It should be placed so that it has
clear view of as much sky as possible. Any obstructions such as antennas, large metal
objects, or buildings will limit the performance of the ATS-6501. The GPS antenna
should have an unobstructed line of sight to the sky. See Figure 1.
B.
In selecting a location for the antenna, its proximity to the ATS-6501 should also be
considered. Ideally, the antenna will be close enough to the ATS-6501 so that there will
be a minimal loss through the antenna cable.