bittner XB400 - Alive Contact; Data Port

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2 Technical Features
2.10 Alive Contact
All Bittner Audio amplifiers (with the exception of the BASIC and 4X DUAL Series), the Switching Unit AX16
and the SXL II Control Interface 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.
Caution
The AX16 is equipped with a 2-pole contact (normally open). It works like pin 2+3 of the 3-pole
contact
Figure 2.10: Alive Contact
State Position Funktion
Alive Contact
active
pins 2+3
connected
indicates that the amplifier is working in normal conditions
Alive Contact
inactive
pins 1+2
connected
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.
2.11 Data Port
Bittner Audio amplifiers Series XR, 4X, 4Xi, 4Xe, 4X DUAL, 8X and the switching unit AX16 are equipped
with the SXL II data port, which allows the monitoring and control of the amplifier by an SXL II Control
Interface (refer to SXL II section 3.14).
Device Data Port
AX16 I
2
C
4X RS–485
4Xi RS–485
4Xe RS–485
4X DUAL I
2
C
8X I
2
C
XR I
2
C und RS–485
Up to 16 amplifier channels may be connected to the SXL II. The 16 amplifier channels may be freely
combined of 2-, 4- and 8-channel amplifiers.
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