Videx VX2200 Instrukcja Naprawy Pobierz pdf (Strona 45)

PAGE 45 of 68 VX2200 TECHNICAL MANUAL VER1.5

CAT5 NOTES: Only recommended for systems with up to 20 apartments and maximum distances of 70m for

mono video or 100m for colour video. Calculations based on a DC loop resistance <0.188 Ohm/m (Converts

to 94 Ohm/km). The following cores should be used on video systems. It is recommended to double up as a

minimum (More cores may be required) the cores on audio systems as well:-

Orange & Orange/White pair = +20

Green = V1

Green/White = V2

Blue & Blue/White pair = L

Brown & Brown/White pair = 0V

Note: Link the bus ground and the video

ground terminals at the videophone.

CW1308 NOTES: CW1308 should have a maximum resistance of 97.8Ω/km. Calculate how many cores are

required for each connection ensuring the maximum overall resistance on the L, - does not exceed 7.5 Ω, V1

& V2 does not exceed 15Ω and the power connections (+12, +20 & Video ground) does not exceed 5Ω. All

other connections can have a maximum resistance of 10Ω

COAX NOTES: All videophones and video monitors can be supplied with coax video or balanced video (Dip

switches must be set correctly). The following cables are recommended:

RG59(BC) for internal use and distances of up to 200m (BC stands for bare copper. Copper coated

steel CCS versions should not be used)

RG11 for internal use and distances up to 600m.

CT100 for external protected use and distances up to 200m.

CT125 for external protected use and distances up to 600m.

YY NOTES: It is not recommended to use YY cable larger than 0.5mm

for the balanced video connections

V1 & V2 or to try doubling up on these connections as this will increase the capacitance of the cable and

could deteriorate the picture quality.

All the above cables are for internal wiring only unless otherwise stated.

SYSTEM NOTES

 Before switch on the system, check the cabling and set all dip-switches

 Remember to terminate the video end of line.

 All phones, videophones and accessories are identified by an address programmed through the 8 way Dip-

switch and each device must have a different address; see decimal/binary conversion table to program the

addresses. Note that each peripheral (phone, videophone or accessory) reads its address from the

dip-switch at power up (when the system is powered): to change the address of a peripheral, it is

necessary that the peripheral is disconnected from the system (disconnect the BUS wires for the

device, and then reconnect.

 In case someone needs to activate more than one device by a single call (for example 2 intercoms in the

same apartment or 1 intercom and 1 additional sounder or 2 videophones, etc.), all devices must have the

same address (up to 3 devices max.). If the 3 units are videophones, to switch on at the same time another

power supply must be added, because the power supply Art.893N1 can supply a maximum 2 videophones

at the same time.

 It is necessary to check that master and slave programming of call panels are correct.

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