Datasheet - Kling & Freitag

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User's manual System Amplifier K&F TOPAS 5.6 Control 5.6.1 General Purpose Input/Output (GPIO) The device has four control inputs (0-10V, variable) and four control outputs (switched, 5V/ open collector, or in the standard configuration: two open collectors and a potential free GPO). These are located on the rear of the device as clamps (compare to illus. Clamp terminal/ GPIO). You can assign functions to the control inputs and outputs via the web interface. 5.6.1.1 Control Inputs (GPI) The GPIs are event driven. A new value is taken over the moment this value has been changed. When there is multiple access to an internal parameter (i.e. volume) by varying interfaces (web interface, GPI, front panel and/or remote software), the last selected value is valid, no matter from which interface it was selected. The common ground of the GPIO's is connected to the audio ground as well as to PE. During installation, make sure that you do not build up any ground loops. Transient currents in ground loops can cause malfunctions or destroy the device. The control inputs allow for the control of internal conditions with 0-10V signals. This allows for i.e. a gain control through external systems such as media control units. 5.6.1.2 Control Outputs (GPO) The control outputs are open collector outputs with a separate supply voltage. This allows for two operating modes: • a) Active Mode: The device can directly supply small loads (LEDs, REED-Relais) with up to 5 volts. The outputs are short-circuit-proof. • b) Open Collector Mode: External voltages of up to 50V can be switched against ground. In newer amplifiers, there is a normally open contact in the standard configuration between the GPO connectors 3 and 4. With this, only three of the four GPO's are available. A modification to include further connecting options is possible. Further alternatives include a normally closed contact between the GPO connectors 3 and 4 or four open collector outputs. For modifications, please contact your Kling & Freitag authorised dealer. KLING & FREITAG GMBH © 2012 Revision 3.0 Page 26 of 65
User's manual System Amplifier K&F TOPAS In the case you are using an external voltage source make sure that the overall current of all loads of the GPOs does not exceed 50 mA. Caution 5.6.2 Control via the Kling & Freitag Remote Software To control a larger number of devices, we will offer the Kling & Freitag Remote Software in the future as a computer-based program. For further information, please contact your Kling & Freitag dealer. 5.6.3 Control via the XML Scripts An XML interface is available to control devices. Using this, you can control all parameters of the amplifier with, for example, network compatible media control units. Please request an interface description from your Kling & Freitag dealer. KLING & FREITAG GMBH © 2012 Revision 3.0 Page 27 of 65
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Datasheet - Kling & Freitag

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