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4
TROUBLESHOOTING
If properly configured, the Remote Station (RS) and the Base Station (BS) should connect within
one minute after being turned on. If the connection is not established, then the following needs
to be investigated.
PROBLEM
Configuration Mismatch
Excessive Pathloss
Cabling & Antennas
Interference
COM-00-21-05
Version No.: A
SECTION 4
TROUBLESHOOTING
Table 4-1 Troubleshooting Matrix
TROUBLESHOOTING PROCEDURE
Verify that both the BS and the RS are configured for the same
configuration. (Note that if the configuration is to be changed over
the radio link, then it is essential to configure all RS units before
configuring the BS unit as connectivity to the RS unit will be lost
after the new configuration is implemented.)
Symbolic Link: It is important to note that the system relies on
symbolic links to the desired configuration file. Multiple
configurations can be stored on each radio, but only the one linked
is active. If the symbolic link is to the wrong configuration file, then
the unit will not connect.
In a lab setup, verify that the attenuation between the BS and the
RS is set properly and does not exceed 90 dB. (Do not power on
the radios without the proper attenuation between the units).
In an operational environment, verify that the path loss is
acceptable and that the connections to the antennas are secure
and proper. Verify that the antennas are correctly installed per the
RF plan.
Verify that both the BS and RS along with their associated RF
cabling and antennas are properly grounded.
Perform an RF scan using Apollo to verify that the channel is clear
of RF interference. Note that the radio has a very large RF range
and as such, out of TX/RX band RF energy can affect the radio's
sensitivity. Proper use of external filters can reduce this
interference.
4-1
TROUBLESHOOTING
OCTOBER 2021
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