Connections
6. Connections
6.1
How to connect Auxiliary Devices safely
Basic Concept:
The Voluson
®
730 is equipped with an isolation transformer to provide the required separation from
mains for both the system and auxiliary devices. These mains outlets are accessible at the rear of the
unit after removing the rear panel.
Video Copy Processor (VCP), Video tape recorders (VTR) are to be connected here as described in
chapter Connections.
The Voluson
®
730 provides several inputs and outputs (I/O) such as Audio, Video, Ethernet, USB,
DICOM and Printer signals. Special care has to be taken when connecting these signals to other
devices.
The IEC 60601-1-1 standard provides a guideline for safely interconnecting medical devices in
systems.
“Equipment connected to the analog or digital interface must comply with the respective IEC/UL
standards (e.g. IEC 950/UL 1950 for data processing equipment and IEC 60601-1/ UL 2601-1 for
medical equipment). Furthermore all configurations shall comply with the system standard
IEC 60601-1-1. Everybody who connects additional equipment to the signal input part or signal output
part configures a medical system, and is therefore responsible that the system complies with the
requirements of the system standard IEC 60601-1-1. If in doubt, consult the technical service
department or your local representative.”
1.) The medical device may be connected to a single IEC XXX device ( protection class I) placed in a
room which is not medically used.
2.) If the device is to be connected in a medically used room the following rule applies:
a.) IEC 60601 compliant devices may be connected as such.
b.) IEC XXX compliant devices (protection class I) may be connected with an additional safety
measure.
For all situations 1 and 2, the additional device shall be installed outside the patient environment.
Additional protective earth connection between the 2 devices,
or a safety isolation mains transformer for the other device
Special care has to be taken, if the device is connected to computer network (e.g., Ethernet), because
other devices could be connected without any control. There could be a potential difference between
the protective earth and any line of the computer network including the shield.
In this case the only way to operate the system safely is to use an isolated signal link with minimum
4mm creepage distance, 2.5mm air clearance of the isolation device. For computer networks there are
media converters available which convert the electrical to optical signals. Please consider that this
converter has to comply with IEC xxx standards and is battery operated or connected to the isolated
mains output of the Voluson
®
730. review:
Connector Panel (rear Side)
(chapter 6.2.5)
Voluson
®
730 - Instruction Manual
6-2
105838 Rev. 3
