MAINTENANCE GUIDE
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Antenna Control Unit Maintenance Guide
10000025991 | Revision 2 | November 2021 | © Radio Frequency Systems 2021
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3. MAINTAINING AN ACU DEVICE
3.1: Flowchart of the Operations
The operations to follow for maintaining an ACU device are listed in Figure 1. The maintenance splits into 2
cases:
Case 1 (Figure 1 – a):
the hardware of a non-site-sharing ACU device of an antenna is out-of-order
and must be replaced on-site by a new non-site-sharing ACU.
Case 2 (Figure 1 – b):
the firmware of an ACU device of an antenna must be upgraded on-site to take
advantage of new features.
Case 3 (Figure 1 – c):
the hardware of a site-sharing ACU device of an antenna is out-of-order and
must be replaced on-site by a new site-sharing ACU.
Case 4 (Figure 1 – d):
the sharing profile of a static site-sharing ACU device of an antenna needs to
be switched to a different sharing profile.
a) Replacing a defective non-site-sharing ACU
b) Firmware upgrade
Figure 1:
Flowchart for maintaining a non-site-sharing ACU
Change the defective ACU
Connect the ALC to the ACU device
Tests of the RET
Load the antenna configuration
Calibrate the RET