Sennheiser TV Cables ADN User Manual download pdf (Page 14)

Structuring and controlling the conference system

Structuring and controlling the

conference system

Structuring the conference system

The ADN conference system is suitable for sm

all 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 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 stand

ard 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 calcul

ate

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:

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

ram.

For further information and for how to calculate the voltage drop of a cable str

ing,

refer to the help of the “ADN Cable Calculator” program.

1 2 15

...

1 2 15

...

Voltage supply = 52.8 V

>35 V >35 V

IN –– AUDIO –– OUT

PORT II PORT I

100-240V~

50/60Hz 240W

2x 52.8V 1.75A

max. 80 mapprox. 2-5 m approx. 2-5 m

Port I

Port II

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

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 120 121

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Sennheiser TV Cables ADN User Manual Page 14

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