Handicare Fotress 1700 ユーザーズマニュアル

 

 

 

 

Motorized scooters may be susceptible to electromagnetic interference (EMI), emitted from sources such as radio stations, 
TV stations, amateur radio (HAM) transmitters, two way radios and cellular phones. The interference (from radio wave 
sources) can cause powered scooters to release their brakes, or move by itself.  It can also permanently damage a powered 
scooter's electronic control system. The intensity of the interfering EM energy can be measured in volts per meter (V/m). 
Each powered scooter can resist EMI up to a certain intensity. This is called its "IMMUNITY LEVEL ". The higher the 
immunity level, the greater the protection. At this time, current technology is capable of achieving at least a 20V /m immunity 
level, which should provide useful protection from the more common sources of radiated EMI. 

 

 

There are a number of sources of relatively intense electromagnetic fields in the every day environment. Some of these 
sources are obvious and easy to avoid. Others are not apparent and exposure is unavoidable. However, we believe that by 
following the warnings listed below, your risk of exposure to EMI will be minimized. The sources of radiated EMI can be 
broadly classified into three types: 

 Transmitters or receivers with the antenna mounted directly on the transmitting unit. Examples include: citizen band (CB) 
radios; walkie talkies; security, fire and police transceivers; cellular telephones; and other personal communication devices. 
 

NOTE: Some cellular telephones and similar devices transmit signals while they are ON, even when not being 
used. 
 
2)  Medium-range Mobile Transceivers 

 Transmitters or receivers used in police cars, fire trucks, ambulances, and taxis. These usually have the antenna mounted on 
the outside of the vehicle. 
 

Commercial broadcast transmitters (radio and TV broadcast antenna  towers) and amateur (HAM) radios. 

 
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers, AM/FM radios, TV sets, 
CD players, Cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, 
are not likely to cause EMI problems to your powered scooter. 

 
Also, the scooter is itself a source of EMI and could disturb the performance of electromagnetic fields such as security alarm 
systems.