GE marquette MAC 1100, Servicing Instructions

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Marquette Hellige GmbH MAC 1100/1200 V 1.1 Page
66
227 492 20 D - 0002
Pin assignment of data port
Remote Start (hardware)
Paper feed via remote control connection (depending on selected operating mode). External
make contact referred to chassis via circuit reference:
•
source impedance Ri < 300
Ω
•
contact dwell > 100 ms
•
non-destructive load
±
10V
•
ESD interface protection up to
±
10kV
Signal Transmission
Patient input to recording
After lead formation and digitization, simultaneous transmission of all electrode signals to the
digital processing system; muscle filter, AC filter, pacing pulse identification, automatic or
manual sensitivity adjustment, automatic baseline adjustment and drift compensation by
means of the anti-drift system (A.D.S.) can be enabled or disabled simultaneously for all
channels; digital output of processed signals via thermal-array printhead.
•
low cut-off frequency (-3 db limits) 0.08 Hz, equivalent to a time constant of 2.04 s
•
high cut-off frequency (3 dB limits) operating mode: 12 Lead, 6 Lead 150 Hz (IEC/AHA)
operating mode: Arrhy 100 Hz (IEC)
•
signal sampling rate: 1000/s
•
resolution, referred to the input 5
µ
V
•
output rate to recorder 2000/s
•
for all leads, gain adjustment in four steps:
40-20-10-5 mm/mV
2 RXDE
3 TXDE
5 circuit reference
6 Modem Supply (MAC1200 US only)
8 Remote Start Input