16-2 EMC Guidance and Manufacturer’s Declaration 
 
The system needs special precautions regarding EMC and needs to be installed 
and put into service according to the EMC information provided below. 
2 
Other devices may interfere with this system even though they meet the 
requirements of CISPR. 
 
3  Preventing conducted RF immunity. Due to technological limitations, the 
conducted RF immunity level are limited to 3Vrms level, conducted RF 
interference above 3Vrms may cause wrong diagnosis and measurements. We 
suggest that you position system further from sources of conducted RF noise. 
Portable and mobile RF communications equipment can affects system. See 
tables 1, 2, 3, and 4 below. 
 
If the system is operated within the electromagnetic environment listed in Table 2 and Table 3, 
the system will remain safe and will provide the following basic performances: 
  Imaging; 
  Doppler acoustic spectral displaying; 
  Taking measurements; 
  Patient information; 
  Date/time information. 
 
TABLE 1 
GUIDANCE AND MINDRAY DECLARATION—ELECTROMAGNETIC EMISSIONS 
The system is intended for use in the electromagnetic environment specified below. The 
customer or the user of system should assure that it is used in such an environment.   
EMISSIONS TEST  COMPLIANCE 
ELECTROMAGNETIC ENVIROMENT
GUIDANCE 
RF emissions 
CISPR 11 
Group 1 
The system
uses RF energy only for its 
internal function. Therefore, its RF 
emissions are very low and are not likely 
to cause any interference in nearby 
electronic equipment. 
CISPR 11 
Class B 
The system is suitable for use in all 
establishments including domestic 
establishments and those directly 
connected to the public low-voltage 
power supply network that supplies 
buildings used for domestic purposes 
Harmonic Emissions 
IEC 61000-3-2 
Class A 
Voltage Fluctuations/ Flicker 
Emissions 
IEC 61000-3-3 
Compliance