When attempting an ECG with your Schiller MS-12 device, and you get the software launched, but no lines go across the screen and no text to alert that it may be leads off, and in the top right-hand corner of the screen, it shows a red X.
To resolve, click the ECG icon as shown by the yellow arrow on the left-hand side, then select the correct serial-numbered unit.
The box with the serial number looks like the image below. Once you click the serial number, your ECG will start running:
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