L-ACOUSTICS LA4X Руководство по эксплуатации онлайн [25/47] 776315

LA4X_UM_EN_2.0 w w w . l - a c o u s t i c s . c o m 25

4.3 User interface

4.3.1 Quick access

The LA4X offers quick access functions for control (front panel locking, mute and gain), identification and

monitoring (display of the input level, input selection, input mode and group information).

Lock/Unlock control

 To lock the front panel (even the mute function) and prevent unintentional operation, press and hold the ESC and

OK keys simultaneously until Display Locked is displayed on the LCD screen (see Figure 17).

 To unlock, press and hold the ESC and OK keys simultaneously until Display Unlocked is displayed on the LCD

screen.

Figure 17: Locking the front panel

Mute control

 Tap one of the four output keys holding it less than 0.3 sec to mute or unmute the corresponding output channel.

The MUTE OUT page is displayed for 2 seconds (see Figure 18).

The output LED is lit when the corresponding output channel is muted and not lit when unmuted.

The quick access mute control is available at all times and positions in the menu tree.

Outputs are muted by default in all factory presets.

The gain can be set before unmuting.

Figure 18: Unmuting OUT 1