Siemens ACUSON Cypress Operator's Manual page 282

Connecting External Devices
A-2
WARNING Accessory equipment connected to the analog and digital inter-
faces must be certified according to the respective IEC standards
(IEC 950 for data processing equipment and IEC 601-1 for medi-
cal equipment). Furthermore, all configurations shall comply with
the system standard IEC 601-1-1. Any party who connects addi-
tional equipment to the signal input part or signal output part is
considered to be configuring a medical system, and is therefore
responsible for ensuring that the system complies with the
requirements of the system standard IEC 601-1-1. If you have
additional questions, contact your Siemens representative.
ACUSON Cypress™ Operator's Manual