IBM Deskstar Deskstar 3, Руководство пользователя

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Conductor AWG wire size 20
Stranding 7 x 28
Material Copper
Coating Tin (1 conductor only)
Resistance 11 ohms maximum per 305 m (1000 ft)
Core Insulation Material Teflon
Outside diameter 6.1 mm (0.24 in.) nominal
Shield Material Tinned copper
Type Braid, 34 AWG, 8 ends/16 carriers,
10.1 ± 10% picks/25.4 mm (1 in.)
Coverage 95% minimum
Resistance 3 ohms maximum per 305 m (1000 ft)
Jacket Material Teflon
Color Translucent (white, natural, or light gray)
Average
single-wall
thickness 0.63 mm (0.025 in.)
Outside diameter 7.00 mm (0.275 in.) nominal
Rating Dielectric
strength 4500 V dc for 3 seconds at 28°C (82°F)
Capacitance 53.1 pF/m (16.2 pF/ft) maximum
Impedance, characteristic 111 ± 5% ohms at 0.5 MHz
107 ± 5% ohms at 1 MHz
105 ± 5% ohms at 2 MHz and above
Attenuation @ 100 MHz 4.5 dB/30.5 m (100 ft) maximum at 25 °C (77°F)
4.7 dB/30.5 m (100 ft) maximum at 80°C (176°F)
Velocity of propagation 66% - 75%
Operating environment -40°C to 105°C (-40°F to 221°F)
10% to 90% relative humidity
Installing Cable Connectors on Twinax Cable
If you purchase bulk twinax cables, assemble them as follows. See the illustrations
for dimensions and help in doing these procedures. If you use connectors that are
provided by a company other than IBM, use the instructions that are provided by
the manufacturer.
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4247 Model 003 User’s Guide