Marquette Hellige GmbH MicroSmart V 2.xx Page 63
Servicing Instructions 227 470 35 B - 97.12
Copy function
After recording an ECG, the unit allows in the "Auto" mode to record copies from the memory
and/or to transfer these to a connected PC.
Test
Automatic function control during power-up of the unit, with tests of the signal path from the
patient input.
Power supply
From line voltage or via built-in rechargeable battery, automatic switchover function, battery
charged during mains system operation via built-in charger.
Mains operation:
* Structural unit design in Protection Class I in compliance with IEC 601-1
* Rated voltage range 100…240V
* Operating voltage range 90V…264V; 49…65Hz
* Current input 0.12...0.3A
* typical power input:
charging the battery 13VA
Unit on + battery charging 17VA
Recording + battery charging 22VA
Operation via built-in battery
* Type: lead battery
* Rated battery voltage 12V
* Rated battery capacity 1.2Ah
* Operation with fully charged battery sufficient for minimum 50 ”ECGs", if unit is
activated only for recording.
* Charge duration for completely discharged battery approx. 6h
* Minimum charging time for 1 "Auto" ECG 20 min
* Battery life approx. 3 years, replacement by Service Unit only
* Lithium battery for built-in clock, approx. life 5 years, replacement by Service Unit only.
* Automatic unit shutdown after approx. 5 minutes, if no electrodes are connected and no
operations are carried out (only if HR control is switched off) or in case of supply
voltage too low (during battery operation: if battery voltage too low).
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