A control device for controlling a measurement system for measuring blood pressure of a subject, wherein the measurement system comprises a) a shell configured to encase a part of the subject, through which blood flows, b) a pressure applicator (6, 8) configured to apply, from outside the shell, pressure to the shell and thereby to the encased part of the subject, and c) a pressure sensor configured to measure the pressure on the skin of the encased part of the subject, wherein the control device is configured to control the measurement system such that - the pressure applicator (6, 8) increases the applied pressure over time in a first measurement time period (T 1) with a first slope and in a second measurement time period (T 2) with a second slope, wherein the first measurement time period (T 1) and the second measurement time period (T 2) are temporally arranged in this sequence, - the pressure sensor measures the pressure on the skin during the first and second measurement time periods, wherein the measured pressure comprises a plurality of pressure pulses, wherein the control device is further configured - to, in the first measurement time period (T 1), determine for each pressure pulse of at least some of the plurality of pressure pulses, at least one feature (TPP, t(Pulse), TPA, TPA.norm, W50, TPA.top, TPA.top.norm), which characterizes the respective pressure pulse, determine for a respective pressure pulse a start value (TPWP_F), to be used for determining the start of the second measurement time period, based on the least one feature (TPP, t(Pulse), TPA,TPA.norm, W50, TPA.top, TPA.top.norm), which has been determined for the respective pressure pulse, such that for several pressure pulses, which are present at different times, several start values (TPWP _F) are determined, form a start curve (TPW_F-curve), to be used for determining the start of the second measurement time period, based on the several start values (TPWP_F), and control, after the start curve (TPW_F-curve) has reached a first maximum, the measurement system such that the second measurement time period succeeds, - to determine a blood pressure value (niBP) based on the pressure measured in the second measurement time period (T 2), wherein the control device is further configured to, in the first measurement time period (T 1), determine a first blood pressure value based on the start curve (TPW F-curve), determine the second slope based on the determined first blood pressure value and control, after the start curve (TPW F-curve) has reached a first maximum, the measurement system such that the second measurement time period (T 2) succeeds with the determined second slope. - the pressure applicator (6, 8) increases the applied pressure over time in a first measurement time period (T 1) with a first slope and in a second measurement time period (T 2) with a second slope, wherein the first measurement time period (T 1) and the second measurement time period (T 2) are temporally arranged in this sequence, - the pressure sensor measures the pressure on the skin during the first and second measurement time periods, wherein the measured pressure comprises a plurality of pressure pulses, wherein the control device is further configured - to, in the first measurement time period (T 1), determine for each pressure pulse of at least some of the plurality of pressure pulses, at least one feature (TPP, t(Pulse), TPA, TPA.norm, W50, TPA.top, TPA.top.norm), which characterizes the respective pressure pulse, determine for a respective pressure pulse a start value (TPWP_F), to be used for determining the start of the second measurement time period, based on the least one feature (TPP, t(Pulse), TPA,TPA.norm, W50, TPA.top, TPA.top.norm), which has been determined for the respective pressure pulse, such that for several pressure pulses, which are present at different times, several start values (TPWP _F) are determined, form a start curve (TPW_F-curve), to be used for determining the start of the second measurement time period, based on the several start values (TPWP_F), and control, after the start curve (TPW_F-curve) has reached a first maximum, the measurement system such that the second measurement time period succeeds, - to determine a blood pressure value (niBP) based on the pressure measured in the second measurement time period (T 2),