GE Vivid S5 N Service Manual page 369

P R E L I M I N A R Y
GE
P N FN091065, R
ART UMBER
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
Table 5-20
Leakage Current
Earth leakage current
Enclosure leakage current
Patient leakage current
Patient auxiliary current
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.
2
EVISION
Leakage and Auxiliary Current Values
Normal Condition
0.5mA
0.1mA
0.01mA
0.01mA
Chapter 5 - Components and Function (Theory)
VS5 N
AND
(taken from table IV in IEC601-1, section 19.3):
Single Fault Condition
1mA
0.5mA
0.05mA
0.05mA
VS6 N
S M
ERVICE ANUAL
Table 5-20
5-51