PMP Synchronization Solutions User Guide
CMM Planning
PMP-0297 007v001 (January, 2017)
3-14
Figure 29 CMM4 cabled to use Gigabit Ethernet feed
Configured for Cambium PTP 400, 500, and 600 Series Ethernet Bridges
PTP 400, 500, and 600 Series Ethernet bridges can use the CMM4’s EtherWAN switch for their
network connectivity.
These units use a different powering scheme and must be powered using their external PIDU
(Powered InDoor Unit), not the powering option of the controller board in the CMM4. The PIDU
must be located between the CMM4 and the ODU (OutDoor Unit – the radio), so as not to put
power on ports of the EtherWAN switch.
IMPORTANT!
The surge suppression provided by the controller board does not
efficiently pass 1000BaseT (Gigabit) Ethernet. Connections required to
support Gigabit Ethernet should not pass through the controller board
portion of the CMM4 and should have separate surge suppression.
PTP 500 and PTP 600 Series bridges operate at greater than 100 Mbit speeds and so should not be
cabled to the controller board portion of the CMM4. Surge suppression to protect the EtherWAN
switch should be provided by a Hyperlink Technologies AL-CAT6HP-JW surge suppressor, cabled
as shown in
. The surge suppressor should be mounted
•
within 3 ft (1 m) of the CMM4 if the CMM4 is located outdoors
•
on the outside of the building or communications hut at the point of cable penetration if the
CMM4 is located indoors.
