40
Pilot tone detection - LFI-350 and LFI-450 systems
In the case of
LINEA FOCUS
LFI-350
and
LFI-450
loudspeaker systems, the analogue Input 2 is
equipped with a priority circuit and pilot tone recognition.
An input level of > -30 dBV means that the signal will be exclusively transmitted via Input 2. An input
level of < -30 dBV means that the signal will be transmitted via Input 1. From Firmware 2.12.10, the
pilot tone keeps Input 2 active.
If the pilot tone and audio signal are switched off, the LFI
defaults to Input 1 and will only transmit
the signal via this input.
The pilot tone can also be activated in
FOHHN AUDIO SOFT.
If the pilot tone is missing, the LFI
system sends a message via the fault message contact.
Pilot tone frequency: 20 kHz, > -30 dBV
Input 2 is also equipped with a low pass filter, operational at 16 kHz / -6 dB, in order to filter the pilot
tone.
Using Input 2 without the pilot tone is not recommended as this can lead to fluctuations in level.
3.4.3 Switching Contacts
DLI-130/230 AES
and
DLI-130/230 ANA
product variants have a contact input that enables
loudspeaker system preset changes to be triggered via an open/close contact,
(see Chapter 3.2.1
“DLI-130 and DLI-230 Connections“)
.
This switching contact can be configured in
FOHHN AUDIO SOFT
:
1.
Select one or more
LINEA FOCUS
system(s) in the
Device List
, then with a right mouse click
open the context menu.
2.
In here, select the
Options
entry. This will open the
Advanced device settings
configuration
dialog.
3.
In here, select one or more
LINEA FOCUS
system(s), then with a right mouse click open a
further context menu.
4.
Select the entry
Set switch config
. This will open the
Input contact configuration
window.
Summary of Contents for DLI-230
Page 21: ...21 WAGO for mains connection with two pins 1 and 3 and grounding screw 2...
Page 60: ...60 5 2 Technical Drawings 5 2 1 DLI 130...
Page 61: ...61 5 2 2 DLI 230...
Page 62: ...62 5 2 3 LFI 350...
Page 63: ...63 5 2 4 LFI 450...
