BackgroundFetal heart rate (FHR) values in the averaged format that are provided by commercial computed cardiotocography analysis systems may be unsuitable for special analysis purposes.MethodI developed a communication software program to obtain any measured values of fetal monitors for individual analysis of computed cardiotocography.ExperienceThe software program was used to study the data continuity of beat-to-beat FHR values as an experiment for chaos theory and power spectrum analysis. The results indicated that the signal loss was recognized at a precision of 95%.ConclusionThe described method of digital communication with fetal monitors was found to be useful for individual purposes in the field of computed cardiotocography analysis.