Laskomex CD-3100 Series Installation, Service And Programming Instruction

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Laskomex CD-3100 Series Installation, Service And Programming Instruction Manual pdf 23 page image

6.8 Installation of distributor CVR–1 and CVR–2 6 INSTALLATION AND ACTIVATIONamong commutators - the one which is mounted on the end of the line (this shouldbe done by means of the junction JP1). In case of the remaining commutators - alljumpers should be removed from the above mentioned junction. Load on C2 inputshould be set on each commutator (the junction JP2). Loads on X and Y outputsshould be set on each commutator (the junctions JP6 and JP7). Load values forinputs and outputs should be matched accordingly to the type of connection cable.For the recommended UTP spiral - it is 100Ω. For other cables, when released forthe application, loads should be fixed to a value being equal to the impedance ofthe cable (see Fig.12, page 22).Input impedance on C1...C4 inputs(JP1, JP2, JP4, JP5)Output impedance on X outputOutput impedance on Y outputCSAJP1 JP2 JP4 JP5JP6JP7JP3X YC1 C2V+ G - + - +-+ -+W1W2LM L+ L-C3 C4- -+136 124 100Signal correction (junction JP3)Gain (junction JP3)Off +2 dB+4 dB136 100124100 136124On OffFigure 12: Configuration of CVP-2 commutator6.8 Installation of distributor CVR–1 and CVR–2Floor distributors CRV-x should be installed in staircases in which video entryphone is installed.Distributor is fastened to the wall by two screws. Four screws should be driven tomount the casing cover to its base. After taking off the cover, make openings inthe base for mounting screws (W1, W2 - dwg. 13), apply it to the wall and markthe places for strut pins. Drill openings in the wall, put plastic elements of strutpins in them and screw the base tot the wall. Then connect wires L+, L- and C+,C - to terminals ARK. Wire should be routed from one distributor to the next one.It is forbidden to connect distributors (or their parts) with electronic cassette byseparate wires.Apply for CVR-1On the ends of wires from monitors converging at the distributor clamp the plugsRJ 45 paying special attention to correct order of wires in the plug. (see dwg. 14).Plugs should be put into distributor sockets. Distributor does not require individualpower supply adaptor – it is supplied from any monitor which is connected withthem - terminals VC and GND.22