Message
Explanation
Printer failure
Printer is not responding, not turned on, not connected, or not on-line.
RAM error
Memory checking failed. Contact authorized service personnel.
Reference not stable
The deviation between the four NMT reference stimulation responses is too big, causing reference setting
to fail.
Replace D-Fend
D-fend water trap is partially blocked.
Response too weak
NMT: The maximum gain is insufficient to increase the response signal amplitude to a measurable level.
This can occur if:
•
Stimulation current is too weak.
•
Stimulation electrodes are not connected or are improperly placed on the nerve.
•
Recording electrodes are disconnected.
•
One or more electrodes are dry and should be replaced.
•
The skin at the electrode site is not properly prepared.
Sample line blocked
Sampling line inside or outside the monitor is blocked or the water trap is occluded.
Change sampling line and/or water trap.
Sensor INOP
The gas measuring sensor is inoperative or the temperature in the monitor has increased.
Contact authorized service personnel.
Setting reference
NMT reference search in progress.
SpO2 probe off
Check SpO2 sensor connection to patient. The finger or ear lobe may be too thin, or sensor halves are not
aligned.
SRAM error
Memory checking failed. Contact authorized service personnel.
Supramaximal not found
NMT: Supramaximal stimulus current (70 mA) not found.
Stop measurement, reposition stimulating or recording electrodes, and restart measurement.
Supramax search
NMT: Supramaximal stimulus current search in progress.
Temperature error
A repeated temperature test has failed. Contact authorized service personnel.
TETANIC
NMT: Tetanic stimulation is on.
Unable to measure Dia
NIBP: Accurate diastolic pressure difficult to measure because of artifacts, weak pulsation, etc.
– 49 –
