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If it is not sensed the message “Lower the Rate” will be
displayed.
The amplitude of the QRS is gradually increased from 0.1 mV
steps or 0.25mv until Delta 3300 detects pacer pulse. The
amplitude at which the pacer pulse is sensed is the sensitivity in
mV.
1. Select (F2) from the Pacer Test Menu. The sense
refractory menu will be displayed. The default waveform
is ECG and width is 40 mS.
2. Press F2 to change the width of the waveform.
3. Press F1 to change the Waveform.
4. When done, select F4 to start the test.
5. The rate and the sensitivity in mV will be displayed.
6. If the selected width of the waveform is greater than 1/3
of the pacer width a message “Lower the Rate” on the
display. If this occurs lower the pulse rate on the
pacemaker.
Noise Immunity Test
The immunity test determines the pacemaker’s susceptibility to
50/60 Hz interference signals. The test can be performed with
or without ECG waveform.
From the Pacer Test Menu select F4 (“Imu”).
Select the desired frequency, 50Hz or 60 Hz, from the noise
Immunity test menu.
To change the amplitude of the sine wave use ‘<’ ‘>’ keys.
To enable ECG select F1.
Summary of Contents for Delta 3300
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