User's Manual Part 1

Chapter 2: System hardware Ethernet cabling
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 18 specifies, for each type of PSU and power supply, the maximum permitted PSU drop
cable length.
Table 19 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 SFP module kits on page 2-35.
Table 18
PSU drop cable length restrictions
Type of PSU
installed
Power supply
to PSU
Ethernet
supported (*1)
Power output to
auxiliary device
Maximum cable
length (*2)
AC Power
Injector
AC mains 100BASE-TX
1000BASE-T
No 100 m (330 ft)
AC+DC
Enhanced
power injector
AC mains No (*3) No 300 m (990 ft)
48 V dc No (*3) No 300 m (990 ft)
AC mains 100BASE-TX
1000BASE-T
Yes 100 m (330 ft)
48 V dc 100BASE-TX
1000BASE-T
Yes 100 m (330 ft)
(*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.
Page
2-28