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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-00-21-04
Version No.: A.1
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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