PMP Synchronization Solutions User Guide CMM PlanningPMP-0297 007v001 (January, 2017) 3-22NOTE:The CMM4 has a female N-type coax connector on the outside of theenclosure, whereas the CMMmicro has a female BNC-type connectorinside the enclosure. Take this into account when ordering or fabricatingcables, and when replacing a CMMmicro with a CMM4.DC CablesCambium recommends the use of flame-retardant, moisture and sunlight-resistant cable rated to75° 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 (http://www.generalcable.com), catalog number234580 for 12 AWG cable and catalog number 236300 for 10 AWG cable, found in theTelecommunications Catalog.Recommended wire size for the CMM4’s DC cable in most systems is shown in Table 9. Thesewire sizes support up to 8 radios (30 VDC or 56 VDC radios) at up to 100 m (328 ft) Ethernet cablelength from the CMM4.Table 9 Wire size for CMM4 DC cableFor supporting 8 PMP 54400 APs or PTP 54200 BHs (which are 12 W 30 VDC radios), reduce eitherthe maximum DC cable length or the Ethernet cable length by half. For example, if the Ethernetcable length from CMM4 to 8 PMP 54400 APs is 50 m (164 ft) or less, the DC lengths in Table 9 canbe used. If the Ethernet cable length from CMM4 to 8 PMP 54400 APs is 100 m (328 ft), then halvethe lengths shown in Table 9.DC Power Cord Length Wire GaugeUnder 12 ft (12.6 m) 14 AWG (2 mm2)12 - 90 ft (3- 25 m) 12 AWG (4 mm2)91- 145 ft (26- 45 m) 10 AWG (6 mm2)146- 230 ft (46- 70 m) 8 AWG (10 mm2)
