www.masimo.com 40 Masimo
Error Possible Causes Recommended Solutions
The measured values of
ETCO2 are out of specified
accuracy
Incorrect zero reference Perform a Zeroing procedure and verify the
measurement with reference gas. See Chapter 8:
Service and Maintenance on page 53.
Numbers appear dim
• Automatic brightness control
is activated.
• Exposed to bright lights or
sunlight.
Pressing any button will return the EMMA display
to normal brightness. See Controls on page 29.
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