Sync Best Practices and Considerations
Multiple CrewCom systems, in addition to CoachComm X-Systems, can be synchronized to operate properly when
collocated. Pliant recommends the following best practices and considerations for syncing two CrewCom systems
together.
(For more on sync connections, see the Sync port description here:
.)
Important
: Sync is not accomplished by connecting between two Control Units' SYNC IN ports; rather,
it is done by connecting between a sync source's CREWNET port and the receiving system's SYNC IN
port.
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If possible, avoid powering the sync source system off and on while other connected systems are in operation.
Upon powering the sync source back on, the receiving system’s Radio Packs (RPs) will experience a brief
disruption of audio for approximately 1–2 seconds while sync is re-established.
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When possible, plug sync connection into both CrewCom systems prior to powering on those systems.
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When syncing systems, it is critical that each system be configured within certain parameters. Primarily,
hopping patterns and frequency bands should be manually coordinated between systems.
o
Radio band settings are configured using CrewWare's Radio Transceiver Management Tab. See the
for more information.
o
Once hopping patterns and radio band have been set for the systems, the Radio Packs will require a
re-pair to their respective Control Unit.
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For optimal spectrum management, determine the locations of one systems' Radio Transceivers (RTs) in
relation to the other. One system's RTs should be as far from the other system as their application needs will
allow.
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The SYNC IN port's left and right LEDs will be green when the connection is functioning properly. When the
sync connection has a problem (e.g., when a CrewNet connection is made to the sync port of a secondary or
tertiary CU), the left LED will be red. If no sync connection is detected, both LEDs will be off.
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During normal operation, and where possible, one system's users should not stand too close to the other
system's RTs in order to avoid desensing their Radio Pack’s receiver.
Setup and Installation - 42
Summary of Contents for Crewcom CCU-22
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