©
2009 by ge-tectronic
Page: 8
If you have chosen the continuous plus connection, the
FastMute
Sonic XL
switches on automatically
when the radio is switched on.
For operation on ignition plus,
FastMute
Sonic XL
switches on when the ignition is switched on. When the
radio (where the ignition is in the appropriate position) is switched on, the operating light (“EIN/ON”) next to the
ISO connector socket plug will illuminate. The radio should continue to be heard on all loudspeaker channels.
Now, test the output from
FastMute
Sonic XL
.
Set the output volume level of the audio source (Navi, MP3 etc) to about 60-70% (The value depends on the
audio source) and then start the output. You should now hear the output of the external audio source on both
front loudspeakers. You should continue to hear the radio/CD on the rear loudspeakers. After continuous audio
output of around 20 seconds, the rear loudspeakers will switch to the
FastMute
Sonic XL
output. The
equipment is now in Long Time Mode and the delay to switch the relay back to radio is extended to about 20
seconds, to bridge any quiet passages or pauses in the music output.
b. Audio Trigger (Threshold) Level Adjustment
The circuit has an adjustable trigger level. If
FastMute
Sonic XL
is activated without a specific audio
signal input, then the trigger level can be changed to reduce the sensitivity. The volume level of the audio source
should be set to around 60-80%. To the left of the ISO-System connector, you will find the trimmer adjustment
“Mute Offset” for the trigger level. Adjust the trimmer to raise the trigger level (turn to the right), until the mute
signal is no longer triggered without an audio input. If the audio output via
FastMute
Sonic XL
is
interrupted, then the trigger level should be reduced (turn to the left), or the volume of the audio source should be
increased.
Use a small screwdriver to adjust the output level of the internal volume control or plug in an external volume
level controller (optional)
Æ
If the output level of the
FastMute
Sonic XL
needs to be slightly louder than the “normal” level, you can
fine-tune the levels of the audio sources to the respective audio environments. If the adjustment range of the
audio source is not wide enough then you should use an external volume controller.
This is ideal for widely different acoustic levels e.g. Camperwagons, Transporters, and Convertibles etc.
After switching off the radio (where appropriate, the ignition position off), the
FastMute
Sonic XL
remains active for about 40 minutes. A new switch on or audio output signal resets the delay time and the
equipment remains active for a further 40 minutes. If the radio is switched off during the drive,
FastMute
Sonic XL
continues to function without limits until the end of the switch-off delay time or another audio signal is
recognised.
When the switch-off delay time has expired, then the equipment goes into quiescent mode to avoid draining
the battery.
Æ
Check that the
FastMute
Sonic XL
power indicator switches off after about 40 minutes as
programmed.
7.
Wiring Diagram, Pin Connections, Block Diagram
Picture 6:
Connections and
Operating Parts
Connections
