Motorola PMP 320, Установка оборудования

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PMP320HDW2v1 3-49
JUL 2010
Preliminary
DC Cables Chapter 4: Cables
DC Cables
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Motorola 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
http://www
), catalog CMM4. Examples of such cable include General Cable (
.generalcable.com
number 234580 for 12 AWG cable and catalog number 236300 for 10 AWG cable, found in
the Telecommunications Catalog.
Recommended wire size for the DC cable of the CMM4 in most systems is shown in Table 4-1 .
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 4-1 Wire size for CMM4 DC cable
DC Power Cord Length Wire Gage
Up to 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
)
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
Table 4-1 can 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 Table 4-1 .
4-2 PMP320HDW2v1