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Chapter 2: System hardware
Ethernet cabling
Ethernet standards and cable lengths
All configurations require a copper Ethernet connection from the ODU (PSU port) to the PSU.
Advanced configurations may also require one or both of the following:
•
A copper Ethernet connection from the ODU (Aux port) to an auxiliary device.
•
An optical or copper Ethernet connection from the ODU (SFP port) to network terminating
equipment or a linked ODU.
Table 16
specifies, for each type of PSU and power supply, the maximum permitted PSU drop
cable length.
Table 17
specifies, for Aux and copper SFP interfaces, the Ethernet standards supported and the
maximum permitted drop cable lengths.
Note
For optical SFP interfaces, the Ethernet standards supported and maximum permitted
cable lengths are specified in
Table 16 PSU drop cable length restrictions
Type of PSU
Power supply
installed
to PSU
AC Power
AC mains
Injector
AC+DC
AC mains
Enhanced
48 V dc
power injector
AC mains
48 V dc
(*1) 10BASE-T is not supported by PTP 650.
(*2) Maximum length of Ethernet cable from ODU to network terminating equipment via PSU.
(*3) Ethernet is provided via optical SFP interface.
SFP module kits
on page 2-27.
Ethernet
Power output to
supported (*1)
auxiliary device
100BASE-TX
No
1000BASE-T
No (*3)
No
No (*3)
No
100BASE-TX
Yes
1000BASE-T
100BASE-TX
Yes
1000BASE-T
Page
2-20
Ethernet cabling
Maximum cable
length (*2)
100 m (330 ft)
300 m (990 ft)
300 m (990 ft)
100 m (330 ft)
100 m (330 ft)
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