One of the most important task in measuring instruments design is noise reduction. The importance of this task increases when user is unskilled. The article consist description of mail difficulties of noise-resistant blood pressure monitor and results of this work.

Keywords: blood pressure monitor, measuring instrument, medical devices, noise, filtration, software, artifact measure, diagnostics

Today’s trend of electronics complicating makes developers to create more complex devices in a shorter time. Developers have to contrive different ways of designing automatization to prevent production worsening. However, automatization cannot improve the situation when an innovative device is developing because such developing involves a lot of testing and researches. In this article authors propose to use hardware in the loop simulation methods to optimize designing process. Hardware in the loop simulation is division the device in functional blocks, some of them are produced as models and other are produced as hardware. Usage of this method decrease cost of modernization hardware blocks and allow using a number of data processing algorithms at the same time.
The article contains a using of hardware in the loop actuality description, main steps of designing enunciation and description of method exemplified by designing of data-measuring and controlling system for automatic orientation of tropospheric communications station.

Keywords: hardware in the loop simulation; data-measuring and controlling system; design of electronic devices; development of electronic devices;