6
HD11 XE Getting Started
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Device Standards
Electrosurgical Units
Electrosurgical units (ESUs) and other devices intentionally introduce radio fre-
quency electromagnetic fields or currents into patients. Because imaging ultra-
sound frequencies are coincidentally in the radio frequency range, ultrasound
transducer circuits are susceptible to radio frequency interference. While an ESU
is in use, severe noise interferes with the black-and-white image and completely
obliterates the color image.
Input/Output Connections
This section describes the system input/output connections and the ECG/physio
input/output connections.
NOTES
•Connect only to equipment approved according to IEC 60950.
• When connecting other equipment to the ultrasound ports, you must ensure
that equipment connections comply with the requirements of the Medical
Electrical System Standard (IEC 60601-1-1).
• Do not place equipment (or open access covers) in a way that enables the
patient to have access to any of the ultrasound ports. Do not touch port pins
and the patient simultaneously.
System Input/Output Connections
Figure 4-2 on page 95 shows the input and output connections on the system’s
two I/O panels. The I/O panels are located on the back of the system.
Table 6-9 Immunity Testing Results
Radiated Immunity EN 61000-4-3:1996 .08 to 3 V/m from 26 to 80 MHz
3 VRMS, amplitude modulated 80% at 2 Hz ECG, 1 kHz
others
Fast Transient Immunity IEC 801-4:1988 ± 0.2-kV power line, ± 0.2-kV signal line
Surge Immunity EN 61000-4-5:1995 ± 0.5-kV common mode, ± 1-kV
differential mode
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