Quantum VSI Basic Operation Instructions page 7

Electromagnetic and Radio Frequency Interference (EMI/RFI)
WARNING! Laboratory tests have shown that electromagnetic and radio frequency waves can
have an adverse effect on the performance of electrically-powered mobility vehicles.
Electromagnetic and Radio Frequency Interference can come from sources such as cellular phones,
mobile two-way radios (such as walkie-talkies), radio stations, TV stations, amateur radio (HAM)
transmitters, wireless computer links, microwave signals, paging transmitters, and medium-range
mobile transceivers used by emergency vehicles. In some cases, these waves can cause unintended
movement or damage to the control system. Every electrically-powered mobility vehicle has an immunity
(or resistance) to EMI. The higher the immunity level, the greater the protection against EMI. This
product has been tested and has passed at an immunity level of 20 V/m.
WARNING! Be aware that cell phones, two-way radios, laptops, electricity generators or high power
sources and other types of radio transmitters may cause unintended movement of your electrically-
powered mobility vehicle due to EMI. Do not turn ON hand-held personal communication devices,
such as citizens band (CB) radios and cellular phones, while the powered wheelchair is turned
on. Be aware of nearby transmitters, such as radio or TV stations, and avoid coming into close
proximity to them.
WARNING! The addition of accessories or components to the electrically-powered mobility vehicle
can increase the susceptibility of the vehicle to EMI. Do not modify your power chair in any way
not authorized by Pride/Quantum.
WARNING! The electrically-powered mobility vehicle itself can disturb the performance of other
electrical devices located nearby, such as alarm systems.
NOTE: For further information on EMI/RFI, go to the Resource Center on www.pridemobility.
com. If unintended motion or brake release occurs, turn your controller off as soon as it is safe
to do so. Contact your Pride/Quantum Provider to report the incident.
VSI Controller Features
Figure 1 provides information on the VSI components and connections. Use this diagram to familiarize
yourself with the function and location of each component before using the VSI Controller.
The following functions are available with the VSI Controller:
Joystick Control
The joystick is used to control the direction and speed of the power chair.
Actuator Adjustment
The user can control positioning of power accessory actuators with the VSI.
Drive Profile Selection
The user can select from available drive profiles, if programmed.
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