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PMP Synchronization Solutions User Guide
CMM4 and Controller Board
PMP-0297 007v001 (January, 2017)
3-4
Figure 25 Rackmount CMM4
Outside the enclosure the CMM4 requires a GPS antenna and a power supply.
The GPS antenna requires a good view of the sky, and should not be mounted at the highest point
of the tower. For best satellite tracking results a clear vew of the southern horizon is required. It is
included with the CMM4 and is also available as a replacement item using part number
GPSANTPNM03D.
EtherWAN Switch
Patch cables
between EtherWAN
switch and
controller board
8 Ethernet ports
supporting Sync
over Power over
Ethernet and
providing surge
suppression
Two 29/30 VDC
input terminal
blocks
Auxiliary sync
port
Controller
board
management
port
Two 56 VDC input
terminal blocks
Two 20 VDC output
terminal blocks
GPS coax
surge
suppressor
Override
(default)
toggle switch
8 Ethernet ports
supporting Sync
and Power over
Ethernet and
providing surge
suppression
Auxiliary sync port
Controller board
management port
8 Ethernet ports
Override (default)
toggle switch