Справочник Пользователя для CartaSense Ltd. GPRSUSG01
Installation and operation
Installation, Operation & Maintenance of the Wireless Sensing Family
17
Operation
If you are using an Ethernet Gateway, make sure that LAN connection is
available.
3.3.2 Rules of “thumb” for locating wireless equipment
The following issues should be considered in deciding the location of USG
units
units
3.3.3 Equipment placement
3.3.3.1 General Considerations for USG location
USG works as a wireless router supporting two types of wireless networks;
each one of the networks has different installation requirements:
each one of the networks has different installation requirements:
a. Cellular communication (GPRS USG)
It is recommended to place the USG where a cellular (GSM) phone
has good reception.
The cellular antenna can be extended to a maximum of 3m from
the gateway (the maximum cable length), and should be located as
high as possible for better reception and for protection from passing
forklifts. Checking cellular reception with doors shut and open is a
good indication to the doors blocking level
good indication to the doors blocking level
b. LAN communication (Ethernet USG)
Verify that an RJ45 Ethernet outlet is available in the vicinity of the
USG.
It is recommended to place the equipment in its potential location and
test it prior to mounting the units. After verification, make the necessary
location adjustments, if needed, and then mount the equipment to its
location adjustments, if needed, and then mount the equipment to its
permanent place.
A Cellular antenna should be located at least 2m away from a UHF
antenna.
General
The following impair cellular reception (considered as transmission
blockers and should be avoided-if possible):
blockers and should be avoided-if possible):
Walls: Concrete walls, Reinforced Concrete, Metal walls.
Doors: Metal doors.
Liquids: Liquid containers and boxes.
Metallic objects: Metal racks, loaded forklifts
Doors: Metal doors.
Liquids: Liquid containers and boxes.
Metallic objects: Metal racks, loaded forklifts
U-Sensor Gateway: USG Must be installed in an area with the best
cellular reception (GPRS USG)