CALAMP WIRELESS NETWORKS INC. 1409290100 ユーザーズマニュアル
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2.1
Pico Base Installation Location
WARNING!
T
HE
P
ICO
B
ASE UNIT MUST ALWAYS BE INSTALLED VERTICALLY AND TOP
-
DOWN
–
WITH THE CONNECTORS ON THE UNDERSIDE FOR PROTECTION
.
This section describes the criteria that should be considered when selecting the Pico Base
installation location.
installation location.
2.1.1
Criteria for Outdoor Locations
Take into account your site plan and local regulations that define distance from populated areas.
The unit should be mounted in the highest possible point. Reception will increase according
to the height of the antennas.
There should be minimum obstacles between the antenna and the planned coverage area
(zone) – minimum of 55% exposure to the sky.
Take into account (according to your coverage site plan) distance from other antennas or
devices that may cause interferences.
devices that may cause interferences.
Accessibility for maintenance (where possible).
2.1.2
Criteria for Indoor Locations
A minimum of 55% direct LOS exposure of the external GPS antenna to sky.
Maximum distance between external GPS antenna to Pico Base = 22 meters.
2.1.3
Antenna Grounding Requirements
The antenna installation must be as per Article 810 of the NEC. Of particular note is the
requirement that the grounding conductor not be less than 10 AWG (Cu). The scheme should
either correspond to UL 96 and 96A. Lightning Protection Components and Installation
Requirements for Lightning Protection Systems, or tested in according to UL 50 and UL 497.
requirement that the grounding conductor not be less than 10 AWG (Cu). The scheme should
either correspond to UL 96 and 96A. Lightning Protection Components and Installation
Requirements for Lightning Protection Systems, or tested in according to UL 50 and UL 497.