EDAN iSe Series - Powering the Electrocardiograph

iSE Series Electrocardiograph Service Manual Inspection and Troubleshooting
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exceeds the range, the ECG board is defective. It is advised that you replace the board.
Item
Test
point
Reference result
1
3V3
+3.14V~+3.46V
2
-2V5
-2.40V~-2.60V
3
5V
+4.75V~+5.25V
4
2V5
+2.40V~+2.60V
1 2 3 4
5.7 Testing the Main Board of DE18 Sampling Box
1) Open the upper casing and lower casing of the DE18 sampling box. Take out the main board.
2) Connect to the electrocardiograph via the DE18 connection cable.
3) Measure the voltage to earth of the following test points by using a multimeter.
4) Compare your measurements with the reference result in the table below. If any measurement
exceeds the range, the ECG board is defective. It is advised that you replace the board.
Item
Test
point
Reference result
(1)
1V1
+0.8V~+1.6V
(2)
-1V1
-0.8V~-1.6V
(3)
2V5
+2.37V~+2.63V
(4)
-2V5
-2.37V~-2.63V