Fluke Biomedical 6000D Impulse - Manual (Page 30)

Impulse 6000D, 7000DP
Users Manual
16
Next, press the softkey labeled Demand. Pressing the
softkey labeled Overdrive causes the Analyzer’s ECG
signal to jump to the rate shown above the Overdrive
softkey label. See Figure 14. To change the overdrive
rate, press
G or H .
fak15.eps
Figure 14. Pacer Demand Overdrive Test
Similarly, pressing the softkey labeled Underdrive causes
the Analyzer’s ECG signal to jump to the rate shown
above the Underdrive softkey label. To change the
underdrive rate, press
G or H .
The summary softkey label appears when the test is
complete. Pressing the Summary softkey displays the test
results which can also be uploaded to a PC.
Performing a Pacer Sensitivity Test
This quantitative test determines the amplitude of the
simulated ECG signal required by the demand mode
pacemaker. The amplitude of the simulated ECG signal is
increased in very small steps until the pacemaker senses
it and inhibits the output pulse.
To perform a Pacer Sensitivity test, press the softkey
labeled More from the Pacer Main menu to reveal the
menu shown in Figure 15. Next press the softkey labeled
Sensitivity.
fak16.eps
Figure 15. Pacer Sensitivity Test Display
Before starting the test, it may be necessary to change the
parameters of the signal feeding the pacer. To change the
signal, press the softkey labeled Set Wave. The shape of
the waveform, the wave width, the wave’s polarity, and its
amplitude are all adjustable at this point. The Wave Form,
Wave Width, and Amplitude softkeys open selections you
can scroll through using
G and H . The Polarity softkey
simply toggles between + and –. With all the parameters
set, press the softkey labeled Done.
At this point, a sensitivity test is started by pressing the
softkey labeled Start Test. When the test is complete, the
sensitivity amplitude is displayed. Pressing the softkey