User Manual

Verifying the DSP mirroring operation
This verification function is available only while two DSP engines are in mirroring status. The function
involves virtual stoppage of the DSP engine operation. Use this function to verify the system during the set-
up process.
An example of mirroring check-up
While DSP A is in the active state, start the mirroring check operation on DSP A to make sure that failover to
DSP B (which is in the stand-by state) will occur. (Failover: a method of protecting the system from failure, in
which standby equipment automatically takes over when the main system fails.)
Starting the mirroring check operation
1 Press the [MENU] key on the front panel of the active DSP engine.
2 Use the [ ▲ ]/[ ▼ ] keys to select “Mirr Chk.”
NOTE
If the Unit ID for the DSP engine does not support mirroring, “Mirr Chk” will not appear.
3 Press and hold down the [ENTER] key.
Press & Hold
[ENTER]
to
Mirr Chk
4 If “DONE” appears, you can verify the DSP’s mirroring operation.
Completing the mirroring check operation
Turn the power to the two DSP engines off and then on.
If both DSP engines become the word clock master after the mirroring operation, you must cancel the status
of the word clock master on one of them. Since this operation cannot be performed from the panel of the
control surface, it must be performed from the front panel of the DSP engine.
NOTE
Even if the active DSP switches from DSP A to DSP B, you must turn off the power to DSP A to change the word clock master status.
Unless the active DSP engine is switched from DSP B to DSP A, the word clock master status will not change. When you turn on the
power to both DSP engines again, DSP A will become active. Please note that the edited data on DSP B will be lost unless you save it
first.
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Network and Connections > Verifying the DSP mirroring operation