T&D RTR-500, Руководство пользователя

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Introduction 8
Notes and Precautions for Installing Wireless
Communication Devices
When installing wireless communication devices take special care in selecting locations so as to
ensure proper communication.
Note that even after a successful installation, due to changes in environmental conditions, communica-
tion errors may occur when restarting the system.
As far as possible, try to keep wireless communication devices away from metals and set them up in
high unobstructed positions.
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Please take note that in many instances, walls, floors, stairs, fences and
desks will contain metals. In order to carry out communication between
indoor and outdoor Units, please locate indoor Units near a window so
that radio waves can be easily transmitted.
Please install these devices more than 30cm away from walls or boards
containing metal.
If wireless communication Units are placed in a metal container such as
a freezer or refrigerator, the possible wireless communication range will
be shortened. In most cases radio waves are transmitted via doors and
door openings so place devices as near to doors as possible.
Place so that the
antenna is away from
objects or walls.
As far as possible, keep the devices away from noise-emitting sources.
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Equipment such as some industrial instruments, electronic devices or fluorescent lamps generate
noise. Please place Units more than 1 meter away from such devices.
Please place Units more than 1 meter away from computers and other devices which emit noise.
Keep all wires as far away from wireless communication devices as possible. Please be careful
about placing near any wiring or cables such as power supply cables, telephone wires or LAN
cables.
Objects which contain lots of water, such as plants or soil, absorb radio waves. We highly
recommend that such materials should not be placed between or near wireless communica-
tion Units.
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When measuring temperature in a greenhouse it has been reported that as plants grew,
communication errors also increased.
Do not place Units directly on the ground.
Do not place devices which are using the same communication frequency channel in the
same area.
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If the same channel is used for multiple devices not only will more communication errors occur, but
battery life will also be shortened.
If there is a possibility that devices with the same frequency channel will be in wireless communica-
tion at the same time, please make sure to make changes to the frequency channels so they are
not the same.
After having made an installation, check the wireless signal strength.
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The supplied software application includes a feature to check for wireless signal strength.
In the RTR-500W Settings Utility in the "Wireless Route Settings" menu it is possible to check click
signal strength.
Note that by moving Units 20 cm in any direction may result in communication results being
significantly changed.
If no change occurs after moving the Units to several nearby locations, we strongly suggest adding
one or more Repeaters (RTR-500) to enhance communication.