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3. Connect the pacer output cables to the pacer input
connectors on the right panel marked Trans. Input.
4. Select the desired load and press F4.
5. Set desired rate width and amplitude (current) on the
pacemaker.
6. The display will flash “????” until the pulse is detected
and the rate, width and the current will be displayed.
7. Use ‘<’ or ’>’ keys for displaying peak volt, energy and
current
8. The measurement cycle continues and the display is
updated.
9. To save the test result presses the “SAVE” key.
10. The test result displayed will be saved with Equipment
ID set in the beginning.
Pace Refractory Test
Refractory period of a demand pacemaker is the time interval
during which a pacemaker is insensitive to ECG signal. If an
ECG signal is detected during this period, the pacemaker
ignores it. However If an ECG is detected outside the refractory
interval, then the pacemaker resets its internal timer and the
next pacer pulse is generated after a delay of one time period
from this ECG wave.
Measurement of the pace refractory takes a few cycles of the
pacemaker output. Delta 3300 measures the pacer pulse
interval and puts out a QRS wave @ 40 milliseconds wide,
delayed by a time, determined initially by checking the pacer
Summary of Contents for Delta 3300
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