I-GO Crest CSS, User Manual

PAGE 8

3. EMI

3.  Long-range transmitters and transceivers, such as commercial broadcast  

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

Attention

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

Power Chair Electromagnetic Interference (EMI)

Because EM energy rapidly becomes more intense as one moves closer to the  
transmitting antenna (source), the EM fields from hand-held radio wave sources  
(transceivers) are of special concern.  It is possible to unintentionally bring high levels  
of EM energy very close to the control system of the power chair while using these  
devices.  This can affect power chair movement and braking. Therefore, the warnings 
listed below are recommended to prevent possible interference with the control system 
of the power chair.

Warnings

1.  Do not operate hand-held transceivers-receivers, such as citizens band (CB) radios, 

or turn ON personal communication devices such as mobile phones, while the  
power chair is turned ON.

2.  Be aware of nearby transmitters such as radio or TV stations, and try to avoid  

coming close to them.

3.  If unintended movement or brake release occurs, turn the power chair OFF as  

soon as it is safe;

4.  Be aware that adding accessories or components, or modifying the power chair, 

may make it more susceptible to EMI (Note: There is no easy way to evaluate  
their effect on the overall immunity of the power chair).

5.  Report all incidents of unintended movement or brake release to the power  

chair manufacturer, and note whether there is a source of EMI nearby.

Important Information

1.  20 Volts per meter (V/m) is a generally achievable and useful immunity level  

against EMI (the higher the level, the greater the protection);

2.  This product has an immunity level of 20 V/m without any accessories and  

connected to it.