ASSMANN Electronic AK-107001 Fiche technique télécharger pdf (Page 237)

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FireWire, also known as i.Link or IEEE 1394, is a series interface developed by Apple.

The FireWire interface is mainly used for quick data exchange between computers and

multimedia or other terminal devices, but is also used in industrial and car electronics.

FireWire is used nowadays, especially for transmitting digital pictures (industrial cameras,

for example) or videos (DV camcorder, for example) to a PC and also for connecting exter-

nal mass storage devices such as DVD burners, hard disks, etc.

The new nine pole FireWire 800 (1394b) is necessary to be able to use the data trans-

mission rates of modern hard disks (over 70 MB/s with modern 300 GB models) also in

external housings, since the conventional FireWire 400 (1394a) is limited to 400 Mbit/s.

The external SATA interface is a quicker alternative to FireWire 800.

Here is an overview of the plugs and sockets used:

FireWire IEEE1394 4pin Plug (left), FireWire IEEE1394 4pin Socket (right)

FireWire IEEE1394 6pin Plug (left), FireWire IEEE1394 6pin Socket (right)

FireWire

Ribbon cable is a cable with one, or several strands where the strands are not grouped

together in a circular form but are placed parallel to each other. The construction type

of this cable is known internationally as Flat Flex Cable or FFC. It is frequently used for

connecting electronic components in computers.

Multi-strand ribbon cable has the advantage that a large number of strands can be con-

nected with little effort to a pin-type plug in connector.

Overview of pin-type plug-in connectors used frequently in the

PC area:

34pin IDC Pfostenplug (left), 40pin IDC Pfostenplug (right)

50pin IDC Pfostenplug

The 34 pin version was/is used for connecting oppy drives. The 40 pin version is fre-

quently used for connecting ATA hard disks. The 50 pin version is not used so often in

the home user PC area.

A light grey PVC material is normally used, where a red or a black edge identies the

rst conductor. There is also colour-coded ribbon cable where the adjacent strands have

10 different colours in accordance with DIN IEC 62. The colours of larger ribbon cables

repeat in accordance with the corresponding number of strands.

The number of strands ranges from 8 pole to 96 pole. The distance between poles can

be from 0.5 mm to 2.54 mm. The most frequently used pattern size is 1.27 mm (0.05“),

so that a connection can be easily made to double rowed pin-type connectors for a 2.54

mm multipoint strip.

Ribbon cables can also be provided with screening. Usually an aluminium or copper foil

which is wound round.

Ribbon cables have been replaced in the last few years partly by round cables, for ae-

rodynamic reasons, since ribbon cable has a much greater inuence on air ow in the

housing than round cable.

Flat Ribben cable

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ASSMANN Electronic AK-107001 Fiche technique Page 237