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FAULT FINDING INTRAC-305
Page 82 INTRAC-305 MANUAL - Issue 3.2 © 2011 Advantech Wireless
Tracking Signal (IBR-L) If the beacon signal falls to a non-usable level the INTRAC
automatically enters Predicting Mode and continues to track
the satellite from the model. There is no way of knowing from
the INTRAC whether the loss of signal is due to the satellite
or the IBR-L. Thus when the displayed beacon level falls
below normal the user should check the signal by some other
means before assuming an IBR-L problem. The beacon
should be checked with a spectrum analyser on a narrow
sweep range so that the actual beacon frequency can be
seen and measured.
Although the loss of or reduction in displayed beacon level
could be caused by a fault on the Interface PCB the most
likely cause is a faulty IBR-L.