Mogami IEEE1394 Fire Wire
High Performance Serial Bus Cable
IEEE 1394 is a Serial BUS standard designed for use in real-time
applications such as sound, video, and animation. This technology was
designed by INMOS for their TRANSPUTER and then further developed by
APPLE, at which point it was given the name "FIRE WIRE". The IEEE 1394
signal has an intermediate characteristic between serial and parallel
transmission. It transmits serial data and clock signal in parallel,
and countermeasures cable skew (propagation velocity difference between
two pairs) by not changing the clock signal when the data signal
changes. This interface requires a new type of cable and connector. It
uses high speed real-time transmission with a cable that can be
connected and disconnected without turning off any device. It makes it
possible to connect freely between multiple terminals without having to
consider termination. MOGAMI Part No. W3208-08 is specifically designed
for the IEEE 1394 standard, and offers the following features.
- Low attenuation
- High propagation velocity
- Low cable skew
Therefore, it carries data transmission with enough margin to be used
for longer runs than the recommended maximum length of 4.5m (14.75Ft)
per cable in the IEEE 1394 standard. Incidentally, the maximum
applicable length of all the connected cables in one Fire Wire system,
excluding a bus bridge on any one bus, is limited to 4.5m × 15
pcs for a total of 67.5m (14.75Ft × 15 pcs = 221.25Ft).
- 6p connector cable assembly is available to
order in 10cm (0.394") interval. Specify required length at XX part of
the cable assembly part number of W5086-XX.
Example: In case of 1.2m, it is W5086-12, while in case of 4.5m, it is
W5086-45.
- Bulk cable is available in 77m (250 Ft) and
153m (500 Ft) roll.
6P CONNECTOR PIN ASSIGNMENT
| Pin No. |
Signal |
Comment |
| 1 |
Y P |
Cable Power |
| 2 |
V G |
Cable Ground |
| 3 |
TPB |
Strobe on receive, Data on
transmit
(differential pair) |
| 4 |
TPB |
| 5 |
TPA |
Data on receive , Strobe on
transmit
(differential pair) |
| 6 |
TPA |
SPECIFICATIONS
| Configuration |
 |
| Part No. |
W3208 |
| Core Configuration |
2×Balanced Signal Pair
2×Power Conductor |
| Balanced Signal Pair |
Conductor Size (mm²) |
0.0886mm² (#28AWG) |
| Insulation |
Ov.
Dia.(mm) |
1.0Ø (0.0394"Ø) |
| Material |
CPP |
| Colors |
Red/Green, Blue/Orange |
| Shield |
1st
Shield |
Aluminum Tape Shield |
| 2nd
Shield |
Copper Braid Shield |
| Power Conductor |
Conductor Size (mm²) |
0.341mm² (#22AWG) |
| Insulation |
Ov.
Dia.(mm) |
1.2Ø (0.0472"Ø) |
| Material |
PVC |
| Colors |
Black/White |
Insulation Taping between two individual core braided
shields and overall aluminum tape shielding |
Twofold Polyester Tape |
| Ov. Shield |
1st Shield |
Aluminum Tape Shield |
| 2nd Shield |
Copper Braid Shield |
| Ov. Jacket |
Ov. Dia.(mm) |
6.1Ø (0.240"Ø) |
| Material |
Flexible PVC |
| Color |
Dark Gray |
| Roll Sizes |
77/153m (250Ft/500Ft) |
| Weight per 77m (250Ft) Roll |
4.5kg |
ELECTRICAL &
MECHANICAL CHARACTERISTICS
| Signal Pair |
Impedance |
Differential |
110W±6W |
| Common
Mode |
33W±6W |
| Attenuation (at 4.5m) |
100MHz: 1.3dB |
| 200MHz: 1.9dB |
| 400MHz: 3.1dB |
| Propagation Velocity |
4.35nS/m |
| Relative Propagation Skew (at 4.5m) |
76ps |
| Power Pair |
Characteristic Impedance (Differential) |
53W |
| DC Resistance at 20°C (at 4.5m) |
0.235W |
| Crosstalk (at 1MHz‾500MHz) |
-52dB |
| Tensile Strength |
882 N |
| Emigration |
Non-emigrant to ABS resin |
| Applicable Temperature |
-10°C‾
+60°C(-14°F‾ +140°F) |
| Standard |
IEEE 1394, UL 2560 AWM
60°C 30V VW-1 |
|
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