24
Single Channel ECG Test System | User Manual
2.6.9
Auto Pacing, Auto Heart Rate, Calibration Mode
Auto Pacing: This opens a new window for automatically
cycling though all the combinations required for pacemaker
testing in IEC 60601-2-27 (Clause 50.102.13).
Auto Heat Rate: This opens a new window for automatically
cycling though all the combinations required for heart rate
testing in IEC 60601-2-27 (Clause 50.102.15).
Calibration mode: Opens a new window for calibrating SECG
4.0
Recommended use for Auto Pacing
This option is intended to be used in conjunction with a trend mode in a patient
monitor. If the patient monitor can reject pacing pulses, the heart rate should not
be affected. Therefore, the test should be set up with a mode that has a constant
heart rate.
For the tests in IEC 60601-2-27, the tests can be grouped into synchronized (heart
rate and pacing is 60bpm), and asynchronous (heart rate 30 bpm, pacing 80 bpm).
In addition, ±2mV pacing pulse uses a separate range. Changing to this range can
cause switching transients that can affect the heart rate. Therefore, separately out
testing for ±2mV is recommended.
Based on experience, it is recommended to have a change interval of at least 30s.
With the selected time, users should verify by simulation that the trend mode will
clearly show up problems (e.g. deliberately set a wrong heart rate for 10s, and verify
this is detectable).
Note that most patient monitors will have problems with the overshoot function.
Users should experiment first to find the overshoot that the patient monitor can
handle, or test this separately (limit the overshoot time to 0ms only).
Recommended use for Auto Heart Rate
As above, tests for the Auto Heart Rate are intended for use with trend monitoring
on a patient monitor, and should be grouped according to heart rates.
