Welch Allyn CardioPerfect Workstation 1.6.5 Software Self Installation - Quick Reference Guide - Manual (Page 6)

6
(a) Wait at least 20 seconds for the square waves to
level off. When the lines become straight, verify that
there are no lead-off messages.
Example lead-off message:
If you receive a lead-off message, reconnect the
indicated leads, and wait 20 seconds again. Repeat
until there are no lead-off messages.
(b) Click Record.
The system takes a 10-second recording and
returns to the main screen with your recording
displayed. You have now verified that your ECG
recorder is properly installed.
a
b
Attach all ten lead wires to the paper clip.