MBT-4000 Multi-Band Transceiver System
Revision 6
Redundancy Configuration / Operation
MN/MBT4000.IOM
Redundancy Configuration / Operation
C–6
MN/MBT4000.IOM
The two MBT-4000 base units cooperate in monitoring the health of the two (2) or four (4) BxCs
(and each other) and, when applicable, external amplifiers, LNAs, LNBs, etc. In case of a fault on
an online BxC the MBT-4000 base containing the corresponding standby BxC, will automatically
switch over to the standby BxC in accordance with the following rules:
1. In dual-base redundancy operation, the redundancy is ‘slot’ based. The corresponding
pairs reside in the same ‘slot’ of the opposite MBT-4000 base, the pair of BxCs
connected to J3 UNIT 1 COMM (Slot 1) on each base form a redundant pair. The BxCs
connected to J6 UNIT 2 COMM (Slot 2) on each base form the other redundant pair.
Typically, one pair is used for up conversion and the other for downconversion although
this is not a requirement.
2. The corresponding BxCs in a pair must be of the same type.
3. The Redundancy Interlink Cable (CEFD P/N CA/WR11224-1 or equivalent) must be
installed.
4. Base unit identification (MBT-A or MBT-B) is driven by the redundancy interlink cable.
Hard wired connections within the cable designate one MBT-4000 base as MBT-A and
the other as MBT-B. The cable is labeled accordingly.
5. The RF and IF switches connected to MBT-A correspond to the redundant pair of BxCs
installed on J3 UNIT 1 COMM (Slot 1).
6. The RF and IF switches connected to MBT-B correspond to the redundant pair of BxCs
installed on J6 UNIT 2 COMM (Slot 2).
7. When a BxC attached to MBT-A is online, the corresponding RF and IF switches will be
switched to position A. When a BxC attached to MBT-B is online, the corresponding
switches will be switched to position B.
For a switchover to occur:
1. Both MBT-4000 base units must be set to redundancy mode 2, the RED=2 command
must have been received by each base.
2. Both BxCs must be set to automatic mode. For example, if the redundant pair is on Slot 2
of the bases, the command RAM=21 must have been received by each base.
3. The corresponding standby BxC must not be in faulted state.
Summary of Contents for MBT-4000
Page 14: ...MBT 4000 Multi Band Transceiver System Revision 6 Preface vi Notes ...
Page 20: ...1 6 1 7 Dimensional Envelope Figure 1 4 MBT 4000 Dimensional Envelope ...
Page 21: ...1 7 Notes ...
Page 42: ...MBT 4000 Multi Band Transceiver System Revision 6 Flash Upgrading 5 4 MN MBT4000 IOM ...
Page 43: ...MBT 4000 Multi Band Transceiver System Revision 6 Flash Upgrading 5 5 MN MBT4000 IOM ...
Page 45: ...MBT 4000 Multi Band Transceiver System Revision 6 Flash Upgrading 5 7 MN MBT4000 IOM Notes ...
Page 83: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX ...