GE Medical Systems MAC 1200, Operator'S Manual, Page: 157 / 180

Revision B MAC 1200 13-5
2012250-022
Technical Specifications: Recording
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 30 to 300 bpm
„
Display update with every heart beat, maximum every 2 seconds
Signal Inputs
Isolated patient signal input, IEC type CF, high-voltage protection for all
lead connections and neutral electrode, interference compensation via
neutral electrode, monitoring for open leads.
„ Electrode connections for RA, LA, LL, LA, V1 to V6.
„ Input impedance for differential signals between any two electrode
connections > 10 MW at 10 Hz.
„ Input impedance for common-mode signals referred to neutral
electrode > 50 MW up to 60 Hz.
„ Dynamic range for differential signals between any two electrode
connections for AC voltage ±10 mV, for superimposed DC voltage
(polarization voltage) ±600 mV.
„ Dynamic range for common-mode signals referred to neutral
electrode ±l V, referred to chassis 263 V AC (rms).
„ Quiescent input current via any electrode connection for l kW
termination referred to neutral electrode < 50 nA.
„ Patient leakage current (rms values) according to IEC, class CF: in
normal condition < 10 mA, in single-fault condition (e.g. patient in
contact with line voltage) < 20 mA.
„ Non-destructive range for lead-electrode connections and the neutral
electrode connection referred to neutral electrode ±50 V, referred to
chassis ±1500 V.
„ Pulse voltage resistance of all lead electrode connections and of the
neutral electrode connection referred to chassis (either polarity, e.g.
defibrillation) 5000 V.
„ Monitoring of each electrode for open leads: RA, LA, LL, RL, V1, V2,
V3, V4, V5, V6 audio signal at printer start.