Fallback Mode Control Page - L-Acoustics LA-AES3 Manuel D'utilisation

When the LOCK status has been recovered, the user can manually revert to AES/EBU input mode by applying the
sequence described in Figure 18:
Note: The input mode selected for both A and B channels can be immediately displayed from the main screen by
pressing and holding the IN A or IN B key. In Figure 19 the onscreen AES messages indicate that the AES/EBU input
mode has been selected. The message would be ANA in case of ANALOG selection or AFB in case of FALLBACK
mode activation.
7.3

FALLBACK MODE control page

The FALLBACK MODE control page is for enabling or disabling the automatic fallback option. When enabled, this
option will automatically select the ANALOG inputs [7.2] in case of digital signal failure (no clock, loss of lock, CRC
error, bipolar encoding error, data slip), allowing digital and analog redundant configurations. Three settings are
available as described in Table 2:
Automatic fallback option disabled.
OFF The sound will be cut off in case of digital signal failure but will automatically be recovered
when the signal has returned to normal state.
Automatic fallback option enabled.
ON The ANALOG inputs will automatically be selected in case of digital signal failure. Revert to
AES/EBU input is not automatic and must be done manually by the user.
The FALLBACK MODE setting procedure is the following:
1. Select the FALLBACK MODE control page by rotating the encoder wheel and press the OK key or the encoder
wheel (or press the ESC key to cancel and return to the last menu).
2. Select the chosen setting by turning the encoder wheel. Press the OK key or the encoder wheel to validate (or
press the ESC key to cancel and return to the last menu).
Note: Invalid audio (validity bit)
A validity bit at non-audio value will not trigger the automatic fallback. Instead the signal will be muted.
LA-AE S3_UM_ML _2.0
Figure 18: Reverting to AES/EBU input mode
Figure 19: A and B input channels display
Table 2: FALLBACK MODE settings description
Figure 20: FALLBACK MODE setting
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