User manual
• Set the simulator to a normal sinus rhythm with a physiological frequency
Measure the ECG signal’s amplitude, calculate the amplitude’s size prior to the
gain, and compare it with the physiological parameters cited in literature.
Input amplifiers’ gain A = 1000.
• Measure the duration of the ECG curve’s individual segments and compare them
with the physiological parameters depicted in Fig. 2.7.
2) Carry out the biosignal’s analysis within the frequency domain.
To realize the task, it is necessary to connect the edutools to the PC; it is assumed that
the SW environment LabVIEW or LabVIEW SignalExpres will be used.
• Display the frequency spectrum of the measured ECG signal
• Disturb the measured signal with disturbing frequency of 50 Hz and watch the
change in the ECG signal’s frequency spectrum
• Apply a suitable filter (SW) to effectively remove the system interference of 50 Hz.
3) Laboratory task: “STC of the ECG apparatus”
• Carry out a safety-technical check (STC) of the apparatus, including the check of
the electrical safety of the apparatus. Use a real medical ECG apparatus to measure:
• Resistance of the supply lead
• Insulation resistance
• Leakage current in the apparatus
• Leakage current in the patient
Record the measured values in a protocol on the STC of the apparatus; see a sample in the
appendix to the textbook.
Referencestousedandrecommendedinformationsources
[2.1] Aschermann, M. et. al. Kardiologie. Praha, 2004. 1540s. ISBN 80-7262-290-0. (in
Czech)
31