PMP Synchronization Solutions User Guide
CMM Planning
PMP-0297 007v001 (January, 2017)
3-22
NOTE:
The CMM4 has a female N-type coax connector on the outside of the
enclosure, whereas the CMMmicro has a female BNC-type connector
inside the enclosure. Take this into account when ordering or fabricating
cables, and when replacing a CMMmicro with a CMM4.
DC Cables
Cambium recommends the use of flame-retardant, moisture and sunlight-resistant cable rated to
75° C wet and bendable at -25° C for the DC cable between the power supply(s) and the CMM4.
Examples of such cable include General Cable (
), catalog number
234580 for 12 AWG cable and catalog number 236300 for 10 AWG cable, found in the
Telecommunications Catalog.
Recommended wire size for the CMM4’s DC cable in most systems is shown in
These
wire sizes support up to 8 radios (30 VDC or 56 VDC radios) at up to 100 m (328 ft) Ethernet cable
length from the CMM4.
Table 9 Wire size for CMM4 DC cable
For supporting 8 PMP 54400 APs or PTP 54200 BHs (which are 12 W 30 VDC radios), reduce either
the maximum DC cable length or the Ethernet cable length by half. For example, if the Ethernet
cable length from CMM4 to 8 PMP 54400 APs is 50 m (164 ft) or less, the DC lengths in
be used. If the Ethernet cable length from CMM4 to 8 PMP 54400 APs is 100 m (328 ft), then halve
the lengths shown in
DC Power Cord Length
Wire Gauge
Under 12 ft (12.6 m)
14 AWG (2 mm
2
)
12 - 90 ft (3- 25 m)
12 AWG (4 mm
2
)
91- 145 ft (26- 45 m)
10 AWG (6 mm
2
)
146- 230 ft (46- 70 m)
8 AWG (10 mm
2
)
