GE
P
ART
N
UMBER
FN091065, R
EVISION
2
VS5 N
AND
VS6 N
S
ERVICE
M
ANUAL
Chapter 5 - Components and Function (Theory)
5-51
P R E L I M I N A R Y
5-8-2
ECG Patient I/O Module Specifications
5-8-2-1
Power Consumption
The ECG and Ext-ECG modules use 5 V (taken from the USB socket on the host).
Estimation: 80mA for ECG function and 50mA when working with EXT-ECG function.
5-8-2-2
Sample Rate
Sampling rate of the ECG signals is: 600 samples/second.
5-8-2-3
Bandwidth
The ECG Bandwidth is 0.05 to 150Hz.
5-8-3
Isolation
The ECG signals are isolated from the Vivid S5 N or Vivid S6 N system to comply with IEC601-1 type
CF device classification. All leakage and auxiliary currents apply the values listed in
"Leakage and Auxiliary Current Values" on page 5-51
(taken from table IV in IEC601-1, section 19.3):
The ECG signals have double, reinforced isolation (B-a) from live parts. Hence, creepage distance and
air clearance in the module are 8 mm and 5 mm respectively, to withstand 4000 volts isolation between
applied part and grounded part.
The applied parts and enclosure have basic isolation (B-a).Therefore, creepage distance and air
clearance in the module are 4 mm and 2.5 mm respectively, to withstand 1500 volts isolation between
applied parts and enclosure.
Table 5-20 Leakage and Auxiliary Current Values
Leakage Current
Normal Condition
Single Fault Condition
Earth leakage current
0.5mA
1mA
Enclosure leakage current
0.1mA
0.5mA
Patient leakage current
0.01mA
0.05mA
Patient auxiliary current
0.01mA
0.05mA
Summary of Contents for Vivid S5 N
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