The test system of thermal output of heat emittors is a standard one used in testing the thermal characteristics of heat emittors and assessing the indicatrix of their characteristics. This paper introduces the key techniques of automation of the test system

which is designed and established according to internaltional standard ISO and national standard GB/T . The paper analyzes the technical principles of test of thermal output

proposes design procedures which can improve the characteristics of the system and accuracy of the test system

and offers some new ideas on shortening the test period

speeding up the process of steady state and data processing. The system realizes automation of multichannel test and control and automation of data processing and analysis.