Chapter 3: System planning
Site planning
Page
3-8
Power supply site selection
When selecting a site for the ODU power supply, consider the following factors:
•
Indoor location with no possibility of condensation, flooding or high humidity.
•
Availability of a mains electricity supply.
•
Located in an environment where it is not likely to exceed its operational temperature rating,
allowing for natural convection cooling.
•
Accessibility for viewing status indicator LED and connecting Ethernet cables.
•
Ethernet standards and cable lengths
Maximum cable lengths
When installing PMP/PTP 450i Series ODU, the maximum permitted length of the shielded copper
Ethernet interface cable is 330 feet (100m) from AP/BHM/SM/BHS to their associated power supplies
or CMM4.
When installing PMP 450m Series ODU, the maximum permitted length of the shielded copper Ethernet
interface cable is 330 feet (100m) from ODU to the network interface equipment.
The 3GHz PMP 450M ODU can use a 1.0 mm
²
, 984.25 feet (300m) power cable.
Grounding and lightning protection
Warning
Electro-magnetic discharge (lightning) damage is not covered under warranty. The
recommendations in this guide, when followed correctly, give the user the best protection
from the harmful effects of EMD. However, 100% protection is neither implied nor possible.
Structures, equipment and people must be protected against power surges (typically caused by
lightning) by conducting the surge current to ground via a separate preferential solid path. The actual
degree of protection required depends on local conditions and applicable local regulations. To
adequately protect a PMP/PTP 450 Platform installation, both ground bonding and transient voltage
surge suppression are required.
Full details of lightning protection methods and requirements can be found in the international
standards IEC 61024-1 and IEC 61312-1, the U.S. National Electric Code ANSI/NFPA No. 70-1984 or
section 54 of the Canadian Electric Code.
Warning
International and national standards take precedence over the requirements in this
guide.
Содержание PMP 450 AP
Страница 79: ...Chapter 2 System hardware System Components Page 2 29 Figure 20 Gigabit Enet Capable power supply...
Страница 160: ...Chapter 3 System planning Radio Frequency planning Page 3 30 Figure 55 Sector Antenna...
Страница 161: ...Chapter 3 System planning Radio Frequency planning Page 3 31 Figure 56 cnMedusa Antenna...
Страница 189: ...Chapter 3 System planning Remote AP Deployment Page 3 59 Figure 65 Remote AP wired to SM that serves as a relay...