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930317 Rev. C
2. Medium-Range Mobile Transceivers:
These include two-way radios used in police cars, fire trucks, ambulances and
taxi cabs.The antenna is usually mounted on the outside of the vehicle.
3. Long-Range Transceivers:
These include commercial radio and TV broadcast antenna towers and
amateur (HAM) radios.
Note: The following are not likely to cause EMI problems:
Lap-top computers (without phone or fax), Cordless phones,TV sets or AM/FM radios,
CD or tape players.
D. DISTANCE FROM THE SOURCE
EM energy rapidly becomes more intense as you get closer to the source.
For this reason, EMI from hand-held devices is of special concern.
(See C.1 above) A person using one of these devices can bring high
levels of EM energy very close to your chair without you knowing it.
E. IMMUNITY LEVEL
1. The level of EM is measured in volts per meter (V/m). Every power wheelchair
can resist EMI up to a certain level.This is called its “immunity level”.
2. The higher the immunity level, the less the risk of EMI. It is believed that a
20 V/m immunity level will protect the power wheelchair user from the more
common sources of radio waves.
3. At the time of printing this Manual, the immunity level of a standard production
Quickie P300 was believed to be at least 20 V/m.
There is no way to know the effect on EMI if you add accessories or modify this chair.
Any change to your chair may increase the risk of EMI. Parts from other suppliers
have unknown EMI/RFI properties.
F. REPORT ALL SUSPECTED EMI INCIDENTS
You should promptly report any unintended movement or brake release.
Be sure to indicate whether there was a radio wave source near your chair
at the time
.
Giv
e notice to:
Sunrise Medical, Quality Department at (800) 456-8168.
V. EMI (ELECTROMAGNETIC INTERFERENCE)