Digital Output Module DOM4-24
583362.22
Approval: G 210122
Part of EN 54-16
DOM (Digital Output Module) is the central control element of VARIODYN® D1. It has interfaces to all input/output assemblies, administers, and monitors the loudspeaker circuits. For voice alarm systems as per DIN VDE 0833-4 and electro-acoustic emergency warning system per EN 60849.
Any complex system configuration can be implemented through the networking of multiple DOMs via Ethernet.
All power amplifiers are permanently monitored. In case a power amplifier is faulty, it can be replaced dynamically by a spare amplifier. The switchover is done automatically via the DOM.
The loudspeaker lines are permanently monitored for short circuit, ground fault, failure as well as impedance deviation. Faulty loudspeaker zones are separated in a non-reacting manner. A DOM contains storage capacity for preset announcements, which can be used for alarm texts and signals (escape alarm, caution signal) and warning signals (gongs). The volume of each source and each amplifier channel can be controlled. Additional filters like parametric equalizer, high-and low pass filter as well as delays are available as well. All errors are recognized, displayed and recorded within few seconds meeting the standards. For special applications like e.g. tunnel, delays can be programmed up to 9.9 sec.
The control unit DOM4-24 is equipped with 4 independent amplifier channels in order to operate 24 loudspeaker areas or 4 loudspeaker circuits in VARIODYN® D1 loop technology.
There is also the option of mixing loop and spur technology with a DOM.