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6 Management and control of
electrocardiograph functions
6.1 Disconnected electrodes, potential
defibrillation
Saturation events are controlled and monitored by your electrocardiograph.
The response of the electrocardiograph depends on the current phase of
operation.
Stop phase
Symbol
displayed
: critical electrode contact. The user can proceed
with the recording; the "critical" electrodes are indicated in the print
report on the information line (for example "
L 1” indicates the critical
nature of the left arm electrode and of electrode C1).
Symbol
OL
displayed
: electrodes disconnected (saturation). It is not
possible to start an automatic recording. A manual recording can be
started; the "disconnected" electrodes are indicated in the display and in
the print report on the information line, and a flat signal will be
reproduced on paper where a lead cannot be acquired due to the
absence of an electrode (e.g. “
OL L 1
” indicates saturation of the left
arm electrode and of electrode C1).
Manual recording phase
The event is indicated as for the stop phase. When normal conditions have
been restored, the signal is centred.
Automatic recording phase
If the event is detected during acquisition (10s), the ECG is stopped and
automatically returns to the stop phase. If the signal is already buffered, the
print continues without interruption. The event is indicated in the same way
as for all other phases.
Defibrillation
The “
OL”
symbol is displayed. See "Defibrillation".
6.2 Batteries low or in need of recharging
When the
symbol is displayed the battery must be recharged. the
reserve charge is lower than 30%.
6.3 Print system control. Out of paper
Sensors verify the correct closure of the paper compartment cover and
indicate when the thermal paper is depleted. During a recording, printout is
