Videx VX2200 Manual do Utilizador descarregar pdf (Página 3)

INTRODUCTION

The purpose of this guide is to help identify the best cable choice for the VX2200 system. Deciding the correct

cable to use is a very important step in the design of any door entry system and can be complicated due to the

number of different types of cable available and the number of different terminologies used to identify the cable

sizes.

Note: All cables sizes should be the same throughout the full length of the system. When calculating the cable distance this should

be taken from furthest point to furthest point (i.e. In most cases this will be the furthest door panel to the furthest handset on the

system).

A popular cable type to use on short distances of no more than 40 metres would be CW1308 or an equivalent.

CW1308 is a solid core twisted pair telephone cable readily available in a selection or pair quantities ranging from 2

pair up to 100 pair with a core size of 0.19mm² (0.5mm). CW1308 is an internal telephone cable. For external cable

runs use CW1128 which has the same core size as CW1308 (CW1128 is available in duct grade and direct burial

grade).

For larger distances an alternative to the above could be an equivalent to a Belden. These are available in a variety

of sizes including 18 AWG (0.8mm²), 20 AWG (0.5mm²) 22 AWG (0.3mm²) and 24 AWG (0.2mm²). For large

installations it may also be convenient to run a large bus and riser cable and then revert to CW1308 for the

connections from riser to apartment.

The cable sizes and core quantities shown in this guide are minimum requirements only. It is quite acceptable to

exceed these guides but to avoid unpredictable operation of the system it is important not to use cables of a

smaller size. It is also worth noting that the VX2200 system uses a balanced pair video signal on video systems

and so it is important to use a paired cable for these connections throughout the installation.

MINIMUM CABLE SIZES

ALL CABLE SIZES SHOWN ARE MINIMUM REQUIREMENTS

Connections 50m 100m 200m 300m 400m 500m

0.4mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.5mm²

0.35mm² 0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.0mm²

+20 (I)

0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.0mm²

Vid Gnd (F1)

0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.0mm²

+LED

0.25mm² 0.35mm² 0. 5mm² 0.75mm² 1.0mm² 1.5mm²

+12V

0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.0mm² 2.5mm²

GND

0.5mm² 0.75mm² 1.0mm² 1.5mm² 2.0mm² 2.5mm²

All others

0.25mm² 0.35mm² 0. 5mm² 0.75mm² 1.0mm² 1.5mm²

Lines * are only required on video systems

Lines ** are only required on telephones with door monitoiring LED (Art. 3176, 3376 * 3476)

V1 & V2 MUST BE A TWISTED PAIR.

Maximum acceptable resistance for all terminals except +20 & Vid GND = 7.5Ω and for +20 & Vid Gnd = 5Ω

Maximum of 400m for video systems.

Power supply should be as close to door panel as possible and a maximum resistance of 5Ω.

AWG mm Diameter mm²

8 3.264 mm 8.35 mm²

9 2.906 mm 6.62 mm²

10 2.588 mm 5.27 mm²

11 2.304 mm 4.15 mm²

12 2.052 mm 3.31 mm²

13 1.829 mm 2.63 mm²

14 1.628 mm 2.08 mm²

15 1.450 mm 1.65 mm²

16 1.291 mm 1.31 mm²

17 1.150 mm 1.04 mm²

18 1.024 mm 0.823 mm²

19 0.9119 mm 0.653 mm²

20 0.8128 mm 0.519 mm²

21 0.7239 mm 0.412 mm²

22 0.6426 mm 0.325 mm²

23 0.5740 mm 0.259 mm²

24 0.5106 mm 0.205 mm²

25 0.4547 mm 0.16 mm²

SWG mm Diameter mm²

4.064 mm

12.97 mm²

3.658 mm

10.5 mm²

3.251 mm

8.3 mm²

2.946 mm

6.81 mm²

2.642 mm

5.48 mm²

2.337 mm

4.29 mm²

2.032 mm

3.24 mm²

1.829 mm

2.63 mm²

1.626 mm

2.08 mm²

1.422 mm

1.59 mm²

1.219 mm

1.17 mm²

1.016 mm

0.81 mm²

0.914 mm

0.66 mm²

0.813 mm

0.52 mm²

0.711 mm

0.4 mm²

0.610 mm

0.29 mm²

0.599 mm

0.28 mm²

0.5 mm

0.19 mm²

For convenience the

following two tables cross

reference some of the

different sizes used by

cable manufacturers and

suppliers. The first table

shows AWG (American

Wire Gauge) along with its

equivalent size in both mm

diameter and mm². The

second table shows SWG

(Standard Wire Gauge)

along with its equivalent

mm diameter and mm²

1 2 3 4 5 6 7 8 ... 27 28

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