Setting up and operating the BUC system
76 Block Up Converter Systems 6700/6900 series User Guide
Switching the redundancy system on and
off
When you power up the redundancy controller, the
redundancy switching system resumes operation using the
current state of the switches.
You can switch off the redundancy switching system at any
time by simply switching off the redundancy controller at the
AC mains supply. In some BUC systems, the BUCs are also
powered down.
Checking the operation of the LED
indicators and controls
The redundancy controller has 18 indicators on the internal
control panel (see Figure 9 on page 18 and Table 12 on
page 60).
Switching between streams
The redundancy controller enables automatic and manual
switching of streams.
The redundancy controller automatically switches streams
when it receives an alarm from the on-line stream. The
redundancy controller always switches transmit and receive
paths together.
You can manually force the system to switch between
Stream 1 and Stream 2.
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