Operator's Manual

Appendix C: EMC Information
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Appendix C: EMC Information
The DC-Air™ sensor and the DC-Air™ docking station
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are subject to electromagnetic interactions with other
electronic devices. The EMC information in this chapter is provided for the medical system established by
establishing the connection between the DC-Air™ sensor and the DC-Air™ docking station and by connecting
the DC-Air™ docking station to a computer (PC or laptop).
The power supply of this computer must be an IEC/UL 60950-1/62368-1 CAT II approved power supply
evaluated for operator-accessible secondary outputs that meet the requirements for SELV / ES1. The power
supply must be certified for reinforced insulation between primary and secondary.
The DC-AIR™ sensor system is suitable for use in hospitals except for near active HF surgical equipment and
the RF shielded room of an ME system for magnetic resonance imaging, where the intensity of EM disturbance
is high.
Portable/mobile radio frequency communications equipment can affect the function of the DC-Air™
sensor system, as well as any other electronic medical equipment. This affect may result in failure of the
image or degradation in the image quality.
The DC-Air™ docking station is a USB-compliant device and shall be used with USB-compliant cables suitable
for full speed/USB 2.0. Such cables are either marked “USB 2.0” or “USB full speed”. USB-certified hubs can be
used to extend the distance to the USB host/computer. The length of the cable connection to the hub or
between hubs shall not exceed 5m (~16.4ft.).
Use of accessories, transducers, and cables other than those specified or provided by the manufacturer
of this equipment could result in increased electromagnetic emissions or decreased electromagnetic
immunity of this equipment and result in improper operation.
Using non-USB compliant cables or hubs or exceeding the maximum count of USB hub devices for
extending the distance, can degrade the immunity of the DC-Air™ docking station to electromagnetic
fields or increase the emission of electromagnetic fields from the DC-Air™ docking station.
Consult technical support for more details on cable lengths and USB hubs.
Use of this equipment adjacent to or stacked with other equipment should be avoided because it could
result in improper operation. If such use is necessary, this equipment and the other equipment should be
observed to verify that they are operating normally.
Portable RF communications equipment (including peripherals such as antenna cables and external
antennas) should be used no closer than 30cm (12inches) to any part of the DC-Air™ sensor system,
including cables specified by the manufacturer. Otherwise, degradation of the performance of this
equipment could result.
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In this section, term “DC-Air™ sensor system” is to be understood to include the DC-Air™ sensor and the DC-Air™ docking station.