System Hardware Deployment; Positioning Your Access Point And Router(S); Distance Between Devices - Advantech LEO-D Series Installation And User Manual

2.6 System Hardware Deployment

2.6.1 Positioning your Access Point and Router(s)

The access point and routers together form the wireless network through which your wireless
ESL tags will operate; correct placement is essential to ensure that you stay within the
operating range of the access point and router(s). Keep in mind, however, that the number,
thickness and location of walls, ceilings, or other objects that the wireless signals must pass
through, may limit the range. Typical ranges vary depending on the types of materials and
background RF (radio frequency) noise in your home or business. The key to maximizing
wireless range is to follow these basic guidelines:
 Make sure that your devices are located within reach of an AC power outlet.
 Place your devices in an elevated location, recommends a minimum height of 2m to
achieve the best reception.
 Keep the number of walls and ceilings between the access point and the router(s) to a
minimum. Each wall or ceiling can reduce your devices range from 3-90 feet (1-30
meters.) Position your devices so that the number of walls or ceilings is minimized.
 Be aware of the direct line between network devices. A wall that is 1.5 feet thick (0.5
meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree
angle it looks over 42 feet (14 meters) thick! Position devices so that the signal will
travel straight through a wall or ceiling (instead of at an angle) for better reception.
 Building Materials make a difference. A solid metal door or aluminum studs may have a
negative effect on range. Try to position the wired access point and wireless routers so
that the signal passes through drywall or open doorways. Materials and objects such as
glass, steel, metal, walls with insulation, water (fish tanks), mirrors, file cabinets, brick,
and concrete will degrade your wireless signal.
 Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or
appliances that generate RF noise.

2.6.2 Distance Between Devices

FROM TO
BASE
ACCESS
STATION
POINT
(COMPUTER)
ACCESS
ROUTER
POINT
TYPE OF OPERATING
CONNECTION RANGE
HARDWIRED
CAT 5E CABLE
WIRELESS
MAX 100m
(Sub-GHz)
Confidential and Proprietary
REMARKS
The ELSA-M System is shipped with a
2m long cable as standard but is not
limited to this distance; actual
distance between computer and
access point is subject to customer
installation requirements
Actual operating range is subject to
adherence with positioning
guidelines given in previous section
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