Alesis Hammerfall DSP System manual Safe Mode

Safe Mode

Input activates redundancy operation. If the current input signal fails, the other input will be used immediately, provided a valid signal is found there. Input also works as automatic input selec- tion, in case only optical or coaxial is present as input signal.

Clock Mode

The unit can be configured to use its internal clock source (Master), or the clock source pre-defined via Pref. Sync Ref (AutoSync).

Pref. Sync Ref.

Used to pre-select the desired clock source. If the selected source isn't available, the unit will change to the next available one. The current clock source and sample rate is displayed in the AutoSync Ref display.

The automatic clock selection checks and changes between the clock sources Word Clock and MADI.

Input Status

Displays the state of the current input signal:

•Channel format (64 or 56 channels)

•Frame format (48K or 96K)

•Sample rate (measured)

•Active input (optical or coaxial)

System Clock

Shows the current clock state of the HDSP system. The system is either Master (using its own clock) or Slave (see AutoSync Ref).

SyncCheck

SyncCheck indicates whether there is a valid signal (Lock) for the inputs Word Clock and MADI, or if there is a valid and synchronous signal (Sync). The AutoSync Reference display shows the input and frequency of the current sync source.

30 User's Guide HDSP MADI © RME