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Bittner Audio - Application Handbook
2.10.3.2.
Without an Operation Mode switch 4X 8X
Each pair of channels can operate in bridge mode. This is achieved by using a reversed polarity
of the channels to each other. The second channel gets the same input signal, but the plus and
minus pins are connected the other way round (see drawing below).
2.11.
Alive Contact XB XV XR 4X 8X AX16
All Bittner Audio amplifiers (with the exception of the BASIC Series and the Switching
Unit AX16 are equipped with an ALIVE contact. The GPI contact is located on the rear
panel of the amplifier and indicates the operational condition of the amplifier.
It is designed as a 3-pole contact closure that may be used in the
open
or the
closed
mode.
ALIVE Contact active
indicates that the amplifier is working in normal
conditions
ALIVE Contact inactive
indicates that the amplifier is not working properly: it is
shut down by the protection circuit, overheated etc. or
generally switched off
This contact closure is the simplest form of remote system monitoring of the amplifier without
establishing a remote control network and provides easy system surveillance. The ALIVE Contact
may also be integrated into a media control network as a GPI contact closure to trigger other
control functions, i.e. backup amplifier (spare amplifier) switching, if required.
2.12.
Data Port XR 4X 8X SXL AX16
Bittner Audio amplifiers Series XR, 4X, 8X and the switching unit AX16 are
equipped with the SXL data port to connect to an SXL Programmable
Control Interface to the amplifier (refer to 3.7. SXL - Programmable Control
Interface Seite 33).
Up to 16 amplifier channels may be connected to the SXL. The 16 amplifier channels may be
freely combined of 2-, 4- and 8-channel amplifiers.
After the amplifier has been connected to the SXL, it will be automatically recognized. The Link
LED on the SXL front panel indicates ON. Communication with the SXL unit is indicated by the fast
blinking green (TX) LED on the amplifier’s rear panel.
For more details please refer to chapter 3.7. SXL - Programmable Control Interface Seite 33.
