User's Manual

US-ENGLISH – 47
Modulated interference: For atrial sensitivity setting of 0.2 mV,
compliance to the Cenelec standard 45502-2-2 is met for a maximum
test signal amplitude of 8 V for the frequency of 60 MHz. 0.4 mV
complies with the standard for the whole frequency range.
15.5. PROTECTION AGAINST SHORT-CIRCUITS
The defibrillator can undergo a short-circuit if the anode and cathode
are not adequately separated.
In this case, the shock is aborted to prevent damaging the defibrillator
and a warning will indicate that a short circuit (shock impedance
< 20 ohms) was detected during the last shock.
16. MAIN FUNCTIONS
16.1. AUTOMATIC LEAD MEASUREMENTS
Automatic pacing lead impedance measurement: A lead impedance
measurement is automatically performed on atrial and ventricular leads
every 6 hours. The daily mean impedance is stored for each chamber.
Automatic coil impedance measurement: A coil impedance
measurement is automatically performed on RV and SVC coils once a
week. The result is stored in the device memory.
16.2. ATRIAL TACHYARRHYTHMIA MANAGEMENT
Mode Switch: This function is designed to limit the acceleration and
variation of ventricular rate in the presence of atrial arrhythmia.