EP 2625678 B1 20220803 - METHOD FOR OPERATING A PUBLIC ADDRESS SYSTEM
Title (en)
METHOD FOR OPERATING A PUBLIC ADDRESS SYSTEM
Title (de)
VERFAHREN ZUM BETREIBEN EINER SPRACHDURCHSAGEANLAGE
Title (fr)
PROCÉDÉ SERVANT À FAIRE FONCTIONNER UNE INSTALLATION D'ANNONCES ORALES
Publication
Application
Priority
- DE 102010047220 A 20101004
- EP 2011004937 W 20111004
Abstract (en)
[origin: WO2012045436A1] The invention relates to a method for operating a public address system with a control center to which loudspeakers are connected via a two-wire loop system that is routed via isolator modules. A fault can be located on the loop system if the control center measures the impedance of the loop system successively from isolator module to isolator module and the impedance of the entire loop system, inputs the measured values as target values into an impedance table, periodically measures the impedance of the entire loop system during operation and compares said impedance with the corresponding target value from the impedance table, generates a fault message upon determining a deviation, and ascertains the fault location by comparing the measured value with the individual target values in the impedance table and displays said fault location.
IPC 8 full level
G08B 29/06 (2006.01); H04R 29/00 (2006.01)
CPC (source: EP US)
H04R 29/007 (2013.01 - EP US); H04R 27/00 (2013.01 - EP US)
Citation (examination)
- JP 2001036995 A 20010209 - TOA CORP
- DE 102010047220 A1 20120405 - NOVAR GMBH [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010047220 A1 20120405; DE 102010047220 B4 20120705; CN 103299352 A 20130911; CN 103299352 B 20150819; EP 2625678 A1 20130814; EP 2625678 B1 20220803; US 2014029754 A1 20140130; US 9462401 B2 20161004; WO 2012045436 A1 20120412
DOCDB simple family (application)
DE 102010047220 A 20101004; CN 201180058461 A 20111004; EP 11790863 A 20111004; EP 2011004937 W 20111004; US 201113877618 A 20111004