GORE™ 1394b Military Firewire
 GORE™ 1394b Military Firewire provides high fidelity signal links for interconnect solutions up to 75 ft (22.9 m) at S400 data rates; when coupled with Gore's military high data rate assembly techniques, the cable can sustain even higher 1394 data rates. Gore's exclusive design geometry offers significant size and weight savings when compared with conventional constructions such as twisted pair cables. In addition, the combination of materials in this construction supports a wide temperature range and meets the most demanding military environments. This design is engineered to provide greater flexibility and ease of installation in challenging environments. Gore's proven quad cable design is the highest performing cable currently in use in both military airframe and spaceflight certified applications.
Features
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Quad design is approximately 40% smaller than common dual twisted pair constructions
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Two differential pair transmission lines
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Highly uniform PTFE dielectric materials with ultra low loss tangent
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Composite dielectric offers best compromise between low dielectric constant for small size and firm outer layer to prevent pushback during termination
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Available in AWG 30 to 22 sizes
GORE™ 1394b Military Firewire meets the following military standards:
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MIL-STD-461: Electromagnetic Compatibility
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RTCA/DO-160D: Lightning Strike
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NEMA-WC27500: Environmental Testing, Jacket and Marking
Cross Section Quad Cable Construction
Pair 1=Blue and Orange, Pair 2=Red and green
Cable Options
GORE™ 1394b Military Firewire has been designed to provide superior electrical and mechanical performance in Military and Aerospace applications of the following Firewire standards: IEEE 1394-1995, IEEE 1394a-2000, IEEE 1394b-2002, and MIL-1394 (under development in SAE AS-1A-3). Standard part numbers are shown, however, custom cable configurations are available upon request.
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Part Number/
Drawings
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AWG Size
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OD- in. (mm)
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Weight- lbs/1000ft (kg/300m)
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Feature
|
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RCN8670
Drawing
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22
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0.220 (5.6)
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47 (21.0)
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FEP jacket
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RCN8686
Drawing
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22
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0.0.195 (5.0)
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41 (18.6)
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Laser markable HSTF jacket
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RCN8671
Drawing
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24
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0.190 (4.8)
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35 (15.6)
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FEP jacket
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RCN8687
Drawing
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24
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0.176 (4.5)
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31 (14.1)
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Laser markable HSTF jacket
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RCN8672
Drawing
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26
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0.138 (3.5)
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25 (11.1)
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High strength alloy conductors, FEP jacket
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RCN8697
Drawing
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26
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0.138 (3.5)
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22 (10.1)
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High strength alloy conductors, Laser markable HSTF jacket
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RCN8673
Drawing
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28
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0.120 (3.0)
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19 (8.5)
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High strength alloy conductors, FEP jacket
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RCN8493
Drawing
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28
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0.112 (2.8)
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16 (7.2)
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High strength alloy conductors, HSTF jacket
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RCN8674
Drawing
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30
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0.110 (2.8)
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15 (6.7)
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High strength alloy conductors, FEP jacket
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RCN8476
Drawing
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30
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0.097 (2.5)
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14 (6.3)
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High strength alloy conductors, HSTF jacket
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Technical Data
The following table is used to select an appropriate cable AWG size based on the attenuation (insertion loss per unit length), transmission distance, and data rate requirements of the Firewire link.
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AWG Size
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Typical Attenuation
dB/100ft or dB/30m
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Maximum Link Length^- ft (m)
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@100 MHz
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@250 MHz
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@500 MHz
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@100 Mbit/s
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@500 Mbit/s
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22
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4.9
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7.9
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11.2
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75-175 (22.8-53.5)
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35-100 (10.7-30.5)
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24
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6.2
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9.8
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14.0
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50-150 (15.2-45.7)
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20-75 (6.1-22.9)
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26
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7.7
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12.3
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17.5
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40-110 (12.2-33.5)
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16-60 (4.9-18.3)
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28
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9.7
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15.4
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21.9
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30-90 (9.1-27.4)
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14-40 (4.3-12.2)
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30
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12.2
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19.3
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27.4
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25-70 (7.6-21.3)
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11-30 (3.4-9.1)
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^ The maximum link length for a given cable AWG is primarily determined by the performance characteristics of the transmitter and receiver and/or the use of other inline components (such as active or passive transformers). For this reason, a range of maximum link lengths are listed for each cable AWG size and data rate.
Product Characteristics for AWG 24 Cable
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Parameter
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Minimum
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Typical
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Maximum
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Units
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Characteristic Impedance
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104
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110
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116
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Ohms
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Capacitance
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-
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12.0
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-
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pF/ft
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Attenuation @ 100 MHz
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-
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-
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6.8
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dB/100 ft
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Attenuation @ 500 MHz
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-
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-
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15.5
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dB/100 ft
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Attenuation @ 1 GHz
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-
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-
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22.5
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dB/100 ft
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Time Delay
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-
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1.25
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-
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ns/ft
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Skew (Within Pair)
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-
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2.0
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3.5
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ps/ft
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Dielectric Withstand (Conductor/Conductor)
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-
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1500
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-
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VRMS
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Dielectric Withstand (Conductor/Shield)
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-
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1000
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-
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VRMS
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Operating Temperature
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-55
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-
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200
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°C
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Weight
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-
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35
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-
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lbs/1000ft
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Overall Diameter
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-
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0.190
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0200
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in
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Eye Pattern*
Eye Pattern test of 50 ft of cable transmitting 500 Mbps of data. The diamond shaped Eye Mask indicates the minimum receiver sensitivity as specified by IEEE 1394b-2002. The Eye Mask test passes with margin indicating greater length transmission is possible with this cable.
Input Signal: 1.1 Vpp , 27-1 PSRB Pattern
Attenuation
Attenuation is measured on a 50 ft. test sample of 110ohm quad cable.
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