Marquette Hellige GmbH MicroSmart V 2.xx Page 60
Servicing Instructions 227 470 35 B - 97.12
Control lights (LED)
For mains voltage applied, battery condition and Start/Stop function.
Lead selection
Manual selection of individual lead groups or automatic stepping keys for the lead groups using
the "Auto" mode.
* Lead programs:
EINTHOVEN, GOLDBERGER, WILSON and CABRERA lead sequence
Automatic modes
To support and simplify operation by:
* Automatic blocking function
* Automatic control, of lead selection, paper feed, calibration
* Formated output
* Automatic zero position
* Anti-drift system to compensate fluctuations in polarization voltage
Detection of pacemaker pulses
* Pulse duration between 0.1 and 2.5 ms
* Marking irrespective of sign
* Pulse amplitude between ± 5 mV and ± 700 mV
Heart rate indication
Determining the heart rate from all ECG signals.
* Display range 30 ... 300 P/min
* Display cycle with each heart beat, max. 2 s
Signal inputs
Insulated patient connection type CF in compliance with IEC; all pickup electrode connections
and N-connectors high voltage resistant (only in connection with original Marquette Hellige
patient lead), interference compensation via neutral electrode (N), electrode monitoring for
breaks.
* Electrode connections for R, L, F, N, C1 ... C6
* Input impedance for differential signals between any two electrode connections at 10 Hz
> 10 MOhm
* Input impedance for common-mode signals against N up to 60 Hz > 50 MOhm
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