GE MAC 1200 Operator's Manual page 181

ECG Calibration
Automatic ECG Gain Adjustment
Baseline
Anti-drift System (ADS)
ECG Storage
Blocking
Revision C
Technical Specifications: Recording
Automatic recording of a defined voltage step, valid for all channels.
„
Calibration voltage, referred to ECG signal input: l mV
Calibration pulse width on recording depends on paper speed
25 mm/s 5 mm
50 mm/s 10 mm
5 mm/s l mm
The gain automatically adapts to the incoming signal. The maximum
amplitude of the lead group or of all leads determines the gain setting.
„
Automatic adjustment range 5 ... 40 mm/mV
„
Amplitude range
Automatic adjustment of the baseline to the optimal recording range, in
dependence of the signal amplitude.
Automatic compensation of baseline fluctuations caused by polarization
voltage fluctuations at the lead electrodes (delay in recording: 4.2
seconds).
In Automatic mode, storage of approximately 40 ECGs.
„
Stored ECGs can be deleted (individually or all in one pass), printed,
transferred and patient data can be edited.
„
In Arrhythmia mode, storage of up to 6 event episodes.
Rapid charge reversal of the coupling capacitors in the preamplifiers
after electrode application.
MAC 1200/1200 ST
2012250-021
(6 channels) 18 to 31 mm
14-9