This technical specification describes – test methods for measuring the performance of pulsed Doppler ultrasound systems; – Doppler test objects for carrying out these tests; and applies to – tests made on an overall pulsed Doppler ultrasound system, a system which is not disassembled or disconnected; – tests made on pulsed Doppler ultrasound systems whether they are stand-alone or as part of another ultrasound instrument. Electrical safety, acoustic output and electromagnetic compatibility (EMC) are not covered in this technical specification. The workload to perform all described tests is, in general, prohibitive. It is intended that a subset of the described tests is adopted for regular use. However, experience to give guidance for selection has still to be gathered and will be the subject of ongoing work.