L-Acoustics LA4X User Manual page 26

LA4X
Amplified Controller
user manual
VERSION 4.0
Input level, input selection, input mode and group information
Press and hold the ESC or OK key from the main screen.

The LED meters and the top line of the LCD screen display information about input channels IN A, IN B, IN C
and IN D, respectively from left to right, see Figure 22.
The bottom line of the LCD screen indicates the group assignation of output channels OUT 1, OUT 2, OUT 3
and OUT 4, respectively from left to right, see Figure 22.
LED SIGNAL to LIMIT/CLIP indicate the level of the signal on the corresponding input channel. For example in
Figure 22, the signal of channel IN A has a level of -10 dB, the signal of channel IN B has a level of -20 dB and channels
IN C and IN D receive no signals.
Input voltage values
The SIGNAL LED is lit when the input voltage reaches -38 dBu (analog audio source) or -60 dBfs (digital audio
source).
The CLIP LED is lit when the input voltage reaches 22 dBu (analog audio source) or -0.1 dBfs (digital audio
source).
Reminder: -38 dBu = 10 mV and 22 dBu = 9.8 V.
LED LOAD is lit if the corresponding input channel is part of the input selection of at least one output channel (see
also section 4.2.1). For example in Figure 22, channel IN A and IN B are selected and channels IN C and IN D are not
selected.
The top line of the LCD screen indicates the input mode and status of input channel pairs AB and
CD (see also section 4.9.1). For example in Figure 22, pair IN A/IN B receives an AES/EBU signal of 44.1 kHz and pair
IN C/IN D is configured to receive ANALOG signals. The brackets indicate that the input mode cannot be different
between IN A and IN B or between IN C and IN D.
The bottom line of the LCD screen indicates the group assignation of the corresponding output channel (see also
section 4.8). For example in Figure 22, channels OUT 1 and OUT 2 are linked by brackets, it means that they are
assigned to the same group or set of group (if an output channel is assigned to several group, the group name is
mult_grp), OUT 3 is not assigned to any group and OUT 4 is assigned to group All.
LA4X_UM_EN_4.0
Figure 22: Pressing ESC or OK
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