Sennheiser ADN Structuring and controlling the conference system, Voltage supply = 52.8

Structuring and controlling the conference system

Structuring and controlling the conference system

Structuring the conference system

The ADN conference system is suitable for small to medium size conferences with approx. 30 conference units (divided up onto the two connection sockets PORT I and PORT II). Delegate units and chairman units can be combined in an arbitrary order and are connected to the central unit using SDC CBL RJ-45 system cables. The ends of the cable strings are open (no ring topology). The maximum number of conference units that can be used depends on the voltage supply which in turn is influenced by the cable lengths (see next chapter).

			IN –– AUDIO –– OUT
			PORT II PORT I
15 ...	2	1			100-240V~
			2x 52.8V	1.75A	50/60Hz 240W
			Port II	Port I
approx. 2-5 m	approx. 2-5 m			max. 80 m

1 2 ... 15

approx. 2-5 m approx. 2-5 m

>35 V Voltage supply = 52.8 V >35 V

In addition, you can connect audio devices to the central unit in order to e.g. feed audio signals to the floor channel or to output the floor channel via an external audio device.

Calculating the voltage drop on the system cables

For safe operation of the conference system, make sure that all conference units are supplied with a voltage of at least 35 V! The voltage supplied depends on the number of connected conference units and on the cable lengths. The standard cable length between the central unit and the first conference unit is 80 m max. and the standard cable length between the conference units is 2-5 m. If these cable lengths are observed, safe operation of a conference system with 30 conference units is ensured. If cable lengths are shorter, it might be that more conference units can be used.

The “ADN Cable Calculator” program allows you to calculate the voltage drops on the individual sections of a cable string and to plan the structure of the conference system. The program is available from your Sennheiser partner or from the down- load area on our website at www.sennheiser.com.

To use the “ADN Cable Calculator” program:

￿Start the “ADN Cable Calculator.exe” file and follow the instructions of the program.

For further information and for how to calculate the voltage drop of a cable string, refer to the help of the “ADN Cable Calculator” program.

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