which naturally blocks the sensing from the moving water.
●
Don’t install nodes on window sills.
Placing the nodes too close to windows may cause the
system to be sensitive to motion outside.
●
Don’t install the PU too far from the nodes.
The PU has to remain in a location where it can
communicate with all of the nodes in the wireless network.
●
Don’t mount nodes to structures that will move.
If the nodes move, false triggering may occur.
Make sure to secure the nodes firmly to something permanent and sturdy.
●
Don’t expose nodes to precipitation (rain, snow, hail).
Outdoor deployments of TMD are
experimental. Precipitation may cause false triggering if water directly hits node enclosures. Make
sure that all nodes are sheltered for any outdoor deployments.
●
Don’t place nodes or PUs near microwave ovens.
Microwave ovens can cause interference to
Xandem TMD systems. Make sure nodes remain at least 5 meters from microwave ovens.
●
Don’t place nodes directly behind large metal objects.
This will cause some of the radio waves
to reflect away from the interior of the network which decreases performance and creates possible
sensitivity outside the detection area.
●
Don’t mount nodes directly on metal.
Metal can distort the antenna patterns on the nodes and
negatively affect detection performance. Keep large metal planes at least 1 foot away.
Choose a TMD kit size
TMD is sold in kits of 6, 10 and 15 nodes. The best kit size depends on the square footage of the area you
want to cover, and the density of the obstructions within the area. Use the table below as a guideline for
choosing a kit size. These sizes may vary depending on the environment.
TMD Kit Size
(Number of nodes)
Light Obstructions
(Drywall, plastic, thin wood)
Heavy Obstructions
(Brick, concrete, large metal objects)
6 Nodes
500 square feet
500 square feet
10 Nodes
2000 square feet
1000 square feet
15 Nodes
5000 square feet
2000 square feet
Copyright © 2015 XANDEM
TMD User Guide (Rev C.2) Page 8
