HELIX NEXT V TWO Bedienungsanleitung Seite 20

Hardware configuration
1. Press the "Menu" button (page 17,
point g) to activate the Amplifier Control
Panel.
2. Press the "Menu" button repeatedly un-
til the gain setting mode LED (page 17,
point e) flashes slowly in orange.
3. Start the Auto Gain Ranging function by
briefly pressing and holding the 'Menu'
button. To prevent speaker damage, the
amplifier automatically mutes its outputs
during the adjustment process.
4. Adjust the volume of your radio to ap-
prox. 90 % of the maximum volume and
play back a suitable test signal – ideally
our proprietary "IGS – Input Gain Setup"
signal, which can be found under "Audio
Test Tracks" in the DSP PC-Tool or down-
loaded from www.audiotec-fischer.com.
The running light of the Gain & Clipping
indicator indicates signal detection sta-
tus:
Green running light:
Red running light:
tected – in this case, check your signal
source and output level.
5. Start the measurement by pressing the
"Menu" button briefly.
Progress is indicated by the filling of the
Gain & Clipping indicator LEDs.
You may cancel the process at any time
by pressing and holding the "Menu" but-
ton. In this case the previously stored
gain value will be restored.
Successful
green.
Failed calibration: LEDs pulse red. Pos-
sible reasons: signal level below 0.5 V or
volume changes during calibration.
6. After the measurement (regardless of the
outcome), stop playback and reduce the
volume level.
7. Press the "Menu" button again to com-
plete the process.
Caution: This will deactivate the speaker
mute function.
If the measurement is successful, the deter-
mined gain value is saved and indicated by
white illumination; otherwise, the previous
setting is automatically restored.
20
Valid signal detected
No valid signal de-
calibration: LEDs pulse
II: Manual gain adjustment
ATTENTION: Don't connect any loud-
speakers to the outputs of the amplifier
during this setup.
1. Press the "Menu" button (page 17,
point g) to activate the Amplifier Control
Panel.
2. Press the "Menu" button repeatedly un-
til the gain setting mode LED (page 17,
item e) flashes slowly in orange.
3. Adjust the volume of your radio to ap-
prox. 90 % of the maximum volume and
play back a suitable test signal – ideally
our proprietary "IGS – Input Gain Setup"
signal, which can be found under "Audio
Test Tracks" in the DSP PC-Tool or down-
loaded from www.audiotec-fischer.com.
4. Normally, one or two LEDs of the Gain &
Clipping indicator (page 17, point a) light
up white. If one or more LEDs are al-
ready red, the input signal is overdriven.
In this case, the input sensitivity should
be reduced by pressing the left arrow
button.
To optimally set the gain level, gradually
increase the input sensitivity using the
right arrow button until one or two LEDs
light up red. This briefly overdriven state
serves as a reference point for the opti-
mal input level.
5. Then press the left arrow button once to
reduce the gain, so that the correspond-
ing LED(s) turn white again.
6. Press the "Menu" button to confirm the
selected gain value and complete the
process.
The gain setting mode LED (page 17,
point e) will now light up solid orange and
the Gain & Clipping indicator will indicate
the stored value in white.
Note: If no input is made within 30 sec-
onds, the amplifier automatically exits the
menu and saves the currently selected gain
setting.