GE marquette MAC 1100, Инструкции по обслуживанию

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Marquette Hellige GmbH MAC 1100/1200 V 1.1 Page
65
227 492 20 D - 0002
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, Vl to V6
•
input impedance for differential signals between any two electrode connections > 10 M
Ω
at 10 Hz
•
input impedance for common-mode signals referred to neutral electrode > 50 M
Ω
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 k
Ω
termination referred to
neutral electrode < 50 nA
•
patient leakage current (rms values) according to IEC, class CF: in normal condition
< 10
µ
A, in single-fault condition (e.g. patient in contact with line voltage) < 20
µ
A
•
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, Vl, V2, V3, V4, V5, V6
audio signal at printer start
Data interface
one serial RS232 interface for exchange of data with suitable external devices and software
handshake
RS232 interface (standard V.24 interface):
•
input voltage range. ± 15V max.
•
output voltage range ±5 V min.
interface protected from electrostatic discharge for ±10 kV max.