Sennheiser ADN If a problem occurs, Conference system, Problem Possible cause Possible solution

If a problem occurs ...

If a problem occurs ...

Conference system

Problem	Possible cause	Possible solution	Page
Central unit cannot be	The central unit is not connected to	Connect the central unit to the mains.	16
switched on	the mains.
Conference unit cannot be	The conference unit is not connected	Check if all plugs are connected	17
used/activated	correctly.	correctly.
	The cable string is too long.	Reduce the length of the cable string	13
		or reduce the number of conference
		units.
	The maximum number of requests to	Increase the maximum number of	28 or 91
	speak has been reached.	requests to speak.
	The chairman unit has not been initial-	If chairman units are connected after-	30 or 88
	ized before use.	wards, you have to initialize them.
The central unit’s display	Changes or errors have occurred.	Check the possible causes indicated by	34
panel displays error icons/		the icons.
the display panel lights up
red
Volume of the conference	The processing of the conference	Adjusting the processing of the	32 or 94
units’ loudspeakers is too	units’ audio signals (“Audio Gain	conference units’ audio signals.
high or too low	Reduction”) is adjusted so that the
	gain of each additional channel is
	reduced too much or too little.
	The floor channel volume is not	Adjust the floor channel volume.	48, 93 or
	adjusted correctly.		101
Loud hissing at the confer-	The conference units are placed too	Increase the distance between the
ence units’ loudspeakers	close together.	individual conference units to at least
		50 cm.
	The floor channel volume is adjusted	Reduce the floor channel volume.	48, 93 or
	to a very high level.		101
After switch-on, the dele-	You are using ADN D1 delegate units	Set a conference mode which does	26 or 90
gate units only indicate	exclusively. The conference mode	not require the grant of speaking
requests to speak	chosen requires a chairman unit	privileges.
	for granting speaking privileges	Use an ADN C1 chairman unit to assign	47
	(e.g. “Request”).
		the “speaking right.
		Use the “Conference Manager”	99
		software to grant speaking privileges.
Delegate unit is automati-	The speaking time limit is activated.	Deactivate or increase the speaking	28 or 91
cally deactivated		time limit.
	A further speaker has made a request	Change the conference mode.	26 or 90
	to speak in “Override” mode.	Increase the number of speakers who	27 or 91
		can take the floor simultaneously.
No request to speak can be	The maximum number of requests to	Increase the maximum number of	28 or 91
made	speak has been reached.	requests to speak.
		Wait until one of the current speakers	–
		passes on his or her speaking privi-
		leges.
The signal light ring	The function is deactivated.	Activate the function.	30 or 91
does not flash when a
request to speak is made

106