GE Medical Systems marquette Dash 2000, Service Manual, Page: 61 / 202

Maintenance: Checkout Procedures
Revision A DASH 2000 Patient Monitor 3-15
2000 412-001
DeÞbrillator
Synchronization
Tests 1. Use the figure at the left as a reference for connecting the
oscilloscope to the DEFIB SYNC connector, located on the back panel
of the monitor, for performing these tests.
2. Test the ECG and Marker Out signals from the DEFIB SYNC
connector. They should closely resemble the waveforms in the figures
below. Note that there are two Marker Out traces shown below. The
upper Marker Out figure references the frequency aspects of the
signal. The lower Marker Out figure references the pulse width
aspects of the signal.
Patient Simulator Setup: HR Ð 80 bpm
HR amplitude Ð 1,0 mV
Display Setup: Channel I Ð Lead II
PIN Signal Name I/O Signal Description
1 MARKER_OUT O Digital defibrillator output
synchronization signal
2 MARKER_IN I Digital defibrillator input signal
3 ANALOG_GND Ð Analog return
4 DIGITAL_GND Ð Digital return
5 NC
6 NC
7 ECG_OUT O Analog ECG output signal
DEFIB SYNC connector:
ECG
Signal Pin: 7
Ground Pin: 3
Time/Division: 0.2 s
Volts/Division: 0.5 V