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Configuration • QAM RF Redundancy Configuration
APEX1000 All-Purpose Edge QAM Software Version 2.4.x • Installation and Operation Manual
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573408-001-a
QAM RF Redundancy Configuration
APEX1000 firmware version 2.4.x supports a physical chassis master/slave redundancy
scheme, where two APEXs are configured as the primary and secondary (backup) units.
External RF Switch
The alternate method is to provide APEX redundancy through an external RF switch. This
switch is necessary to fully enable APEX RF redundancy in this APEX internal module
redundancy system, and is essential because each RF output is typically connected to a
different physical downstream service group. The REM1000 (Redundant Edge Matrix)
fulfills this role, providing system-level RF redundancy for two APEX units:
Figure 6-15 — REM1000 (Redundant Edge Matrix)
Notes:
• With RF redundancy enabled on the APEX1000, RF port 6 is configured as a
redundant port, backing up RF ports 1 to 5. If a failure of an RF ports occurs, the
APEX1000 re-routes the output transport streams to RF port 6.
• Because it is not feasible to manually rewire the RF cables after a failure, an external
switch is required to perform the necessary automatic signal routing without
operator intervention; the REM1000 allows the backup port to use the same physical
wiring that was previously used by the failed APEX RF port.
• The REM1000 ensures that the backup APEX RF port can transmit its RF outputs
downstream using the same physical cabling that was previously in use by the failed
APEX RF port.
• The APEX1000 reports on the status of the REM1000, indicating which outputs are
active, and also showing any faults or error conditions that the REM1000 might
experience.
For detailed instructions on how to connect the APEX1000 to the REM1000, reference
the REM1000 user guide (Motorola part # 559607-001).
For information on purchasing the REM1000, please contact the
Motorola TAC.
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