If A Problem Occurs - Sennheiser ADN Instruction Manual

If a problem occurs ...

If a problem occurs ...
Conference system
Problem
Central unit cannot be
switched on
Conference unit cannot be
used/activated
The central unit's display
panel displays error icons/
the display panel lights up
red
Volume of the conference
units' loudspeakers is too
high or too low
Loud hissing at the confer-
ence units' loudspeakers
After switch-on, the dele-
gate units only indicate
requests to speak
Delegate unit is automati-
cally deactivated
No request to speak can be
made
·
The signal light ring
does not flash when a
request to speak is made
106
Possible cause
The central unit is not connected to
the mains.
The conference unit is not connected
correctly.
The cable string is too long.
The maximum number of requests to
speak has been reached.
The chairman unit has not been initial-
ized before use.
Changes or errors have occurred.
The processing of the conference
units' audio signals ("Audio Gain
Reduction") is adjusted so that the
gain of each additional channel is
reduced too much or too little.
The floor channel volume is not
adjusted correctly.
The conference units are placed too
close together.
The floor channel volume is adjusted
to a very high level.
You are using ADN D1 delegate units
exclusively. The conference mode
chosen requires a chairman unit
for granting speaking privileges
(e.g. "Request").
The speaking time limit is activated.
A further speaker has made a request
to speak in "Override" mode.
The maximum number of requests to
speak has been reached.
The function is deactivated.
Possible solution
Connect the central unit to the mains.
Check if all plugs are connected
correctly.
Reduce the length of the cable string
or reduce the number of conference
units.
Increase the maximum number of
requests to speak.
If chairman units are connected after-
wards, you have to initialize them.
Check the possible causes indicated by
the icons.
Adjusting the processing of the
conference units' audio signals.
Adjust the floor channel volume.
Increase the distance between the
individual conference units to at least
50 cm.
Reduce the floor channel volume.
Set a conference mode which does
not require the grant of speaking
privileges.
Use an ADN C1 chairman unit to assign
the "speaking right.
Use the "Conference Manager"
software to grant speaking privileges.
Deactivate or increase the speaking
time limit.
Change the conference mode.
Increase the number of speakers who
can take the floor simultaneously.
Increase the maximum number of
requests to speak.
Wait until one of the current speakers
passes on his or her speaking privi-
leges.
Activate the function.
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