User's Manual

55
Pacing and Sensing Functions
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Pacing in Single-Chamber Pacemakers
In order to ensure pacing in single-chamber pacemakers during signal
analysis and threshold verification, the device paces at a rate that is 10
ppm higher than the intrinsic rate.
Programmable Parameters
Amplitude Control -
ACC
ON; OFF; A TM
The "minimum ventricular amplitude" and "maximum ventricular
amplitude" parameters prevent a certain value of the ventricular
amplitude from being exceeded or undershot.
Minimum Ventricular
Amplitude:
0.2...(0.1)...3.6...(0.1)...4.8 V
Maximum Ventricular
Amplitude
2.4; 3.6; 4.8 ; 6.4 V
The search period parameter determines the times or intervals during
which the signal quality is continuously verified and the automatic
threshold search is executed. Intervals or times can be alternately
selected.
Scan Period
Interval; Times of Day
Interval
0.1; 0.3; 1; 3; 6; 12; 24 hours
Times of Day:
1
st
/ 2
nd
Time of Day
00:00 to 24:00 hours, min. time unit of 15 min
Safety pacing is carried out at the amplitude of the last-measured
pacing threshold plus the set safety margin or the programmed initial
amplitude. The largest value of the pacing threshold influences the
safety pacing.
Safety Margin:
0.3...(0.1)..1.2 V