Chapter 2: System hardware
Cabling
Page 2-27
Cabling
Ethernet standards and cable lengths
All configurations require a copper Ethernet connection from the ODU (Main PSU port) to the
Power supply.
Table 31
specifies, for each type of PSU and configuration, the maximum permitted PSU drop
cable length.
Table 31 PSU drop cable length restrictions
System configuration
Maximum cable length (m/ft)
Power supply
PoE powered device
on AUX/SYNC port
From power supply
to ODU
From ODU to PoE
device on AUX/SYNC
port
Power supply (30W)
None 100
m
N/A
IEEE 802.3at Type 2
Not supported
AC Power Injector (60W) None 100
m
N/A
IEEE 802.3at Type 2
100 m in total
AC+DC enhanced Power
Injector
None 100
m
N/A
IEEE 802.3at Type 2
100 m in total
-48 V DC power injector
None
100 m
N/A
IEEE 802.3at Type 2
100 m in total
CMM4 with 56 V supply
None
100 m
N/A
IEEE 802.3at Type 2
Not supported
IEEE802.3at compliant
supply
None 100
m
N/A
IEEE 802.3at Type 2
Not supported
Note
The Ethernet connectivity for CMM4 requires the part “Ethernet cable adapter for
CMM4 – N000045L001A”.
