Marquette Hellige GmbH MAC 1100/1200 V 1.1 Page 64
227 492 20 D - 0002
Paper transport
• paper speed
5-25-50 mm/s, key selectable
error limits at 25 and 50 mm/s, typ. ±l%
at 5 mm/s, ±10% max.
• At paper end, the recorder emits an audio signal and stops recording
the last pages of the pad bear a colored stripe in the lower margin
Membrane keypad
Pushbuttons with tactile feedback
• function keys for all routine operations
• alphanumeric keyboard for entry of text
Display
graphics display with 24 x 40 characters, contrast adjustment
resolution of 320 x 240 pixels with display backlighting
Indicators (LED’s)
For mains power, battery status and start/stop function
Automatic functions
They assist and facilitate operation by
• automatic control of lead selection, paper feed, calibration (configurable)
• report formatting (configurable)
• automatic baseline adjustment
• anti-drift system (cubic spline) compensating for polarization voltage fluctuations
(configurable)
Detection of pacer pulses
• pulse length between 0.1 and 2.5 ms
• pacer pulse marker independent of pulse polarity
• pulse amplitude between ± 5 mV and ± 700 mV
Heart rate indication
derivation of the heart rate from all ECG signals
• display range between 30 and 300 bpm
• display update with every heart beat, maximum every 2 seconds
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