ResMed Nox A1s Manual page 29

Check signals with a tablet (option 2)
• Check signal impedance
Impedance:
Fair connection
0-5kΩ:
5-20kΩ:
Good connection
>20kΩ:
>100kΩ:
Bad connection
Re-attach the electrode if the impedance colour
is red or black.
Cable colour
Good connection
Fair connection
Bad connection
No contact
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