4–16
DECbridge 500/600 Series Problem Solving
4.4.4
Cabling Specifications
Table 4–6 lists some of the specifications for the power cable, IEEE 802.3/Ethernet
cable, and FDDI cable.
Table 4–6:
Cable Specifications
Item
Value
Power:
AC power cord length
U.S. -- 1.83 m (6 ft)
Others -- 2.5 m (8.2 ft)
IEEE 802.3/Ethernet AUI Interface:
Transceiver cable length
50 m (164 ft) maximum
IEEE 802.3/Ethernet ThinWire Interface:
ThinWire cable length
185 m (606 ft) maximum
Recommended Multimode Fiber Interface Cable:
Cable length
2 km (6561 ft) maximum
Nominal core diameter
62.5
±
3.0
µ
m
Cladding diameter
125.0
±
2.0
µ
m
Numerical aperture
0.275
±
0.015
Modal bandwidth minimum
500 MHz
•
km @ 1300 nm, 160 MHz
•
km @ 850 nm
Maximum attenuation rate
1.5 dB/km @ 1300 nm, 3.5 dB/km @ 850 nm
Power budget
11.0 dB @ 1300 nm (for FDDI), varies by product
@ 850 nm
Fiber optic connector types
Approved MIC plug types A, B, and S; maximum
attenuation is 1.0 dB
