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USER’S MANUAL
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MENU
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ENTER
7.1
CONTROL PANEL DISPLAY
1. AV bit IN HD STATUS DISPLAY:
This is the visual element of the AV bit IN HD system with a 3-character backlit LCD.
While operating it can display all configuration parameters stored in the amplifier during the installation. The following
pages contain all the messages and statements that may appear on the display from time to time
(see section 7.4)
2. MENU:
This button activates the AV bit IN HD and shows the first entry available. Each time you press this button while
normally operating the amplifier, AV bit IN HD shows the first entry available and not the last entry on which you worked
(see section 7.4)
. At any point, if you press the MENU key you exit from AV bit IN management and automatically return to
the home screen (default display) without saving your changes.
Note:
At any point, if you do not touch the keys for 5 seconds, AV bit IN HD will automatically return to the home screen
(default display) without saving your changes.
3. ENTER:
This button is used to
(see section 7.4)
:
-
Confirm the selected entry,
-
Save it,
-
Go to the next menu entry.
4. UP - DOWN:
These buttons allow navigation through the available entries of various menus. Depending on the function,
you can change the selection and then confirm by pressing the ENTER key
(see section 7.4)
.
5. CH A LEVEL (-9dB ÷ +3dB)*
: CH A
input sensitivity control, enabled with switch
GAIN
set to
ON
(see section 7)
. If the potentiometer
is set to position 1, the amplifier sensitivity level will be equal to -9dB; if set to position 3, the amplifier sensitivity level will be
equal to 0dB; if set to position 5, the amplifier sensitivity level will be equal to +3 dB.
6.
CH B LEVEL (-9dB ÷ +3dB)*
: CH B
input sensitivity control, enabled with switch
GAIN
set to
ON
(see section 7)
. If the potentiometer
is set to position 1, the amplifier sensitivity level will be equal to -9dB; if set to position 3, the amplifier sensitivity level will be
equal to 0dB; if set to position 5, the amplifier sensitivity level will be equal to +3 dB.
7.
CH C LEVEL (-9dB ÷ +3dB)*
: CH C
input sensitivity control, enabled with switch
GAIN
set to
ON
(see section 7)
. If the potentiometer
is set to position 1, the amplifier sensitivity level will be equal to -9dB; if set to position 3, the amplifier sensitivity level
will be equal to 0dB; if set to position 5, the amplifier sensitivity level will be equal to +3 dB.
8. POWER ON:
The green LED indicates that the amplifier is on. If LEDs 12, 13, 14 and 15 are simultaneously lit, the amplifier will
turn off and it will be necessary to contact a service centre.
9. THERMAL:
The red LED indicates the amplifier temperature. It flashes at 60°C and the output power is limited by 1.5 dB. The
flashing frequency increases around 70°C where the output power is limited by 3 dB. The LED lights up without flashing at about
80°C when the amplifier thermal protection starts operating. The amplifier will restart at about 70°C.
10. OVERLOAD:
The orange LED indicates an output overload. It flashes when the output load drops below the minimum permitted,
allowing the amplifier to operate at a lower power. If the load drops below about 0.5 Ω impedance, the LED will turn on without
flashing and activate the amplifier protection. If when listening to music the sound stops for a while, check if the orange LED
flashes; it means there was an overload. Turn the amplifier off and check speakers and wiring.
11. SPEAKER:
The yellow LED indicates a fault in the speaker connection. It turns on when a speaker terminal
short-circuits with
the vehicle chassis. If when listening to music the sound stops for a while, check if the yellow LED flashes; it means there
was a short-circuit between a speaker terminal and the vehicle chassis. Turn the amplifier off and check speakers and wiring.
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See 7.4: How to configure AV bit IN
*
WARNING:
adjusting the sensitivity level affects the system Signal/Noise ratio (hiss / background noise). It is always advisable to set
a high level output on the processor and a low gain on the amplifiers or to disable the gain adjustment (set the switch “Gain” to OFF),
for the amplifiers to be less sensitive to hisses / background noises.
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AV 5.1k HD /
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Summary of Contents for AV 5.1k HD
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