SE-3 3-Channel Electrocardiograph Service Manual
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system will be shifted to the main interface automatically. And then enter the corresponding
interfaces of the System Setup window to set the current time and change some menu options and
exit.
Turn off the electrocardiograph, and turn on it five seconds later. When the electrocardiograph is
ready for examination and recording, observe if the time displayed on the LCD screen is the
current time. And enter the corresponding interfaces of the System Setup window to see if these
menus keep the changed options. Then restore these menus to the default values and turn off the
electrocardiograph. Five seconds later, turn on the electrocardiograph again. When the
electrocardiograph is ready for examination and recording, observe if the menus are still the
default options.
6. Heart Rate display tests
Set the heart rate output from the ECG emulator as different values, and the error of Heart Rate
values displayed on the LCD screen of electrocardiograph should be within
±
1bpm. When the
heart rate output from the ECG emulator is 240bpm, the electrocardiograph will give the hint
information of Heart Rate exceeding the limit and make an alarm sound.
7. Recording tests
1) Set the following values:
The heart rate output of ECG emulator is 80bpm, the work mode of electrocardiograph is auto,
the speed is 25mm/s, the AC Filter is off, the Lowpass Filter is 150Hz and all the options in the
Record Setting menu are on. Install the recording paper and press PRINT/STOP key to begin to
record. Examine whether the recording content are integrated and consistent with the information
displayed on the LCD screen.
2) Make the ECG detector output the sine wave with 2mV and 10Hz. Press PRINT/STOP key to
begin to record. Examine whether the recording content are integrated and consistent with the
information displayed on the LCD screen. The amplitude of ECG waveform of Lead I should not
be less than 25mm.
3) The ECG record includes: Date and time, ID, Name, Sex, Age, Sensitivity, Paper speed, filter,
Lead, 1mV calibration mark, ECG waveform, Heart Rate etc. Meanwhile, before recording ECG
wave, 1mV Calibration mark and lead names will be recorded. Recorded characters and
waveforms are clear.
4) Open the casing of recorder and remove paper, the hint information of
“
Paper?
”
should be
displayed. Install the paper again and close the casing of recorder, the hint information of
“
Paper?
”
should disappear.
