SmartDrive
User’s Manual
3
Electromagnetic Interference (EMI)
Electromagnetic Interference comes from radio wave sources. Examples of these sources are radio/TV station transmit-
ters, receivers, transceivers [send and receive signals], cell phones, walkie-talkies, etc. There are many sources of EMI in one’s
daily environment, some that are avoidable and some that one might not even realize. Powered electronic devices, such as
the SmartDrive are susceptible to EMI, both strong and weak, from these types of transmitters, as well as from electrostatic
discharges (ESD) and conducted sources. These interferences can cause unintentional activation of the SmartDrive motor or
damage to its control system, potentially causing a safety hazard and leading to costly repairs.
Every power wheelchair or power assist device can resist EMI up to a certain level, also known as its “immunity level”. The
higher the immunity level, the less the device is at risk of interference. An immunity level of 20 V/m is understood to provide
sufficient protection from the sources encountered on a daily basis. The SmartDrive has been tested and found to be immune
to this minimum immunity level of 20 V/m.
Though equipped to be sufficiently protected against EMI, any chair modifications or accessory additions can effect its im-
munity. Parts from other suppliers have unknown EMI properties, and their interaction with the SmartDrive is untested.
Electromagnetic energy becomes increasing more intense the closer to the source you become. Therefore, it is recommended
that the SmartDrive not be operated in close vicinity to sources of radio waves. There are three categories that EMI sources
fall under:
1.
Long Range Transceivers: These are sources of strong radio waves, including commercial radio and TV broadcast
antenna towers and amateur (ham) radios.
2.
Medium Range Mobile Transceivers: These are sources of potentially strong radio waves, including two-way radios
used by emergency vehicles, tractor-trailers, and taxis.
3.
Handheld Transceivers: These are sources of relatively low strength waves but have the possibility of getting very
close to your wheelchair, including walkie-talkies, citizen band (CB) radios, cell phones, and other personal com-
munication devices.
The following are not likely to cause EMI problems: Cordless phones, MP3/CD players, TV sets, and AM/FM radios.
If any unintentional activation of the SmartDrive occurs, turn off the unit as soon as it is safe to do so and report the incident
to Max Mobility [please indicate any source of EMI that was in close proximity when the incident occurred].
USA / Canada
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this device must accept any interference, including interference that may cause unde-
sired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
1.
Battery Unit
2.
Buttons
3.
Button Plug
4.
Adaptive Clamp
5.
Drive Unit
6.
Roller
7.
Drive Unit Handle
8.
Drive Unit LED
9.
Battery Unit Connector
10.
Cord
11.
Battery Unit Clip
12.
Omni-Drive Wheel
13.
Battery Unit Handle
14.
Button Jack
15.
Connector Holder
16.
Button LED
17.
Button Velcro Loop
List of Components
(refer to the next page for diagrams)
