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58 Meru Access Point Installation Guide © 2009 Meru Networks, Inc.
Installing the Access Points
Weather Conditions
Take into account any extreme weather conditions that are known to affect your
location. Consider these factors:
z Tem perature — The OAP180 is tested for normal operation in temperatures from
- 40°F to 140°F. Operating in temperatures outside of this range may cause the
unit to fail.
z Wind Velocity — The OAP180 can operate in winds up to 44 m/s and survive higher
wind speeds up to 66 m/s. You must consider the known maximum wind velocity
and direction at the site and be sure that any supporting structure, such as a pole,
mast, or tower, is built to withstand this force.
z Lightning — The OAP180 includes its own built-in lightning surge protection.
However, you should make sure that the unit, any supporting structure, and cables
are all properly grounded. Additional protection using lightning rods, lightning
arrestors, or surge suppressors may also be employed. Antenna sockets should
point upwards in a vertical manner
z Rain — The OAP180 is weatherproofed against rain. Also, prolonged heavy rain has
no significant effect on the radio signal. However, it is recommended to apply
weatherproof sealing tape around the Ethernet port and antenna connectors for
extra protection. If moisture enters a connector, it may cause a degradation in
performance or even a complete failure of the link.
z Snow and Ice — Falling snow, like rain, has no significant effect on the radio
signal. However, a build up of snow or ice on antennas may cause the link to fail.
In this case, the snow or ice has to be cleared from the antennas to restore
operation of the link.
Ethernet Cabling
When a suitable antenna location has been determined, plan a cable route from the
OAP180 outdoors to the power injector module indoors. Consider these points:
z The Ethernet cable length should never be longer than 100 ft.
z Determine a building entry point for the cable.
z Determine if conduits, bracing, or other structures are required for safety or
protection of the cable.
z For lightning protection at the power injector end of the cable, consider using a
lightning arrestor immediately before the cable enters the building.
z The shield of the ethernet cable needs to be grounded at the lightning arrestor.
If, by design, the lightning arrestor cannot provide this ground, the shield of the
ethernet cable will need to be grounded by the installer.
Grounding
It is important that the OAP180, cables, and any supporting structures are properly
grounded. The OAP180 unit includes a grounding screw to attach a ground wire. Be
sure that grounding is available and that it meets local and national electrical codes.
- Meru Access Point 1
- Contents 3
- Appendix D 5
- About This Guide 7
- Typographic Conventions 8
- Contacting Meru 9
- Chapter 1 11
- Access Points 11
- AP300 Configurations 12
- Figure 3: AP200 14
- Console PoE 16
- Chapter 2 17
- Installing the AP300 17
- Unpack the AP300 18
- Determine Power Requirements 18
- Installation Requirements 19
- Install the AP300 20
- Attach the Antennas 21
- Install the AP300 23
- Install the Access Point 25
- Check AP300 LED Activity 31
- Where to Go From Here 32
- Chapter 3 33
- Installing the AP200 33
- Installing the Access Points 36
- Attaching the AP200 Antennas 37
- Mounting the Access Point 37
- Turn clockwise 38
- Vertical Mounting 39
- Mounting bracket 40
- Mounting bracket holes 44
- Checking LED Activity 46
- Checking LED Activity 47
- AP200 LED Descriptions 48
- Chapter 4 51
- Installing the AP150 51
- Horizontal mounting None 53
- Horizontal mounting below a 53
- Attaching the AP150 Antennas 55
- Vertical Mounting the AP150 56
- Suspended ceiling 58
- Wall cable access 58
- Chapter 5 63
- Installing the OAP180 63
- Unpacking the OAP180 64
- Weather Conditions 66
- Ethernet Cabling 66
- Grounding 66
- Test Basic Link Operation 67
- Align Antenna 72
- Antenna Gain Recommendations 74
- Appendix A 77
- Specifications 77
- Ethernet Interface 78
- Physical 78
- Appendix B 79
- AP Accessories 79
- Power Supplies 80
- Antennas 80
- Antennas 81
- : MN-ACC-ANT3-50MD 83
- : MN-ACC-ANT3-80MD 83
- 802.11 b/g 85
- 2.4Ghz = 8 dBi 85
- Mounting Brackets 89
- Appendix C 91
- Mounting Bracket Stencils 91
- Cautions and Warnings 95
- Cautions 96
- Warnings 100
- Warnings 101
- Appendix E 103
- Regulatory Information 103
- Underwriters Laboratories 105
- Interference Statement 106
- Canada. Industry Canada (IC) 107
- AP Antennas with Gain 108
- Restrictions 109
- IEEE 802.11a Restrictions 111
- EEE 802.11b/g Restrictions 111
- Manufacturing Information 113
- AP300 Plenum Requirements 113
- MERU NETWORKS, INC 115
- Limited Product Warranty 115
- Meru Networks, Inc 119
- 894 Ross Drive 119
- Sunnyvale, CA 94087 119
- 408-215-5300 119
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