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 equipment.