Fermax MDS Technical Manual - page 9
MDS
MDS
Page 9
e) Number of buses (cabling).
- AUDIO only:
- Panel Bus: 4 wires and shielded twisted pair.
- General Input Bus to Interior Blocks or Bus between Interior Blocks: 4 wires + shielded twisted
pair.
- Decoder Bus: 4 wires and shielded twisted pair.
- AUDIO + VIDEO:
- Panel Bus: 7 wires and shielded twisted pair + coax.
- General Input Bus to Interior Blocks or Bus between Interior Blocks: 4 wires + shielded twisted
pair + coax.
- Decoder Bus + Video Distributor: 6 wires and shielded twisted pair + coax.
DISTANCE
(in metres)
SECTION of wires (cables) based on distance.
Video Cables
COAXIAL RG-59
Section
Shielded Twisted Pair
Section
1 mm
2
+ 0.5 mm shielded twisted pair
2
300 to 500
1000 to 1500
1000 to 1500
up to 300
1.5 mm
2
+ 0.5 mm shielded twisted pair
2
75 Ohm
2.5 mm
2
+ 0.5 mm shielded twisted pair
2
4 mm
2
+ 0.5 mm shielded twisted pair
2
Orange
COLOUR
Ref. 5918
Audio outdoor panel - apartment
Audio apartment - outdoor panel
Data Transmision
Data Transmision
Audio common
USED
SECTION
1 mm
+
Brown
Blue
Red
Black
White
2
6
Sb
Sa
-
WIRE
12 Vdc
2
2
2
2
0.5 mm
0.5 mm
2
2
1 mm
1 mm
1 mm
COLOUR
Ref. 5919
Video signal
Camera activation
USED
SECTION
-
Core
WIRE
White
CT
1 mm
2
+
Video Supply 18Vdc
Shield
Shielded
1 mm
2
1 mm
2
Red
Black
Note
Fermax supplies a series of specially designed CABLES specially designed for MDS systems.
The Fermax cables Ref. 5918 and Ref. 5919 are suitable for distances of up to 300 metres. For greater
distances, see the sections recommended in the above table.
SUMMARY OF MDS DIRECT SYSTEM CHARACTERISTICS
INDIVIDUAL BLOCK
GENERAL ENTRANCE
INTERIOR BLOCK
MDS
DIRECT
Residences
Accesses
(no of
panels)
99
5 - 9
(1)
Accesses
(no of panels)
See MDS
Digital Table
5 - 9
(1)
MDS Direct
MDS Digital
Accesses
(no of panels)
Residences
(per block)
Accesses per
block
(no of panels)
99
9
No of blocks
99
Note
-
(1)
5 accesses (between audio and video panels) with 1 central guard unit and 9 accesses (between
audio and video panel) if no central guard unit exists.
- The MDS Direct system can only connect 1 single MDS Direct Guard Unit throughout the whole
system.
- In the case of residential complexes if the Panel(s) is configured as a General Entrance audio
communication can be established with the Guard Unit.
- The General Entrance Guard Unit cannot establish audio communication with the Panel(s) in the
Interior Blocks, although the door to the interior block can be opened if necessary.