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1. Set the resistance value to 1kOhm. Connect the stimulation electrodes to the two wiring terminals.
2. Set the multimeter to operate in DC mode. Connect the multimeter sensors to the NMT stimulation electrodes,
making sure that the sensor and electrode connected have the same polarity.
3. Insert the NMT module into the module rack of the monitor. Select the NMT parameter area of the monitor to
access the NMT Setup menu. Set the Stimulation Current to Supra(60mA). Set the Pulse Width to 300μs.
Perform a PTC measurement.
4. Check the voltage change detected by the multimeter and verify normal output of NMT stimulation.
Method 2:
Tools required:
Resistance box (0~9999.9 Ω)
Oscilloscope (Agilent DS0-X3014A)
1. Set resistance box to 1kOhm, connect stimulation electrodes to the resistance box.
2. Insert the NMT module to monitor. Set Stimulation current to Supra (35mA), Pulse width to 200μs. Select ST
Mode in NMT setup menu to start a ST measure.
3. Measure the voltage wave of the resistance box by oscilloscope, verify the pulse width is range from 180 to 220us,
and calculate the Stimulation Current according stimulation voltage should be range from 33 to 37mA.
Sensor Check
Tools required:
None.
1. Connect the patient monitor, NMT module, and NMT accessories.
2. Select Main Menu→Maintenance→enter the required password→Module→NMT.
3. Follow the on-screen instructions to check the NMT sensor.
If sensor check completes successfully, the message Test passed. The function of NMT sensor is OK is displayed,
indicating a functional sensor. If the check fails, check whether the sensor is placed correctly as instructed, and perform
the sensor check again.
Stop NMT measurement or calibration before starting NMT sensor check.
Avoid forcefully striking the sensor.
4.4.17 ANI Test
Method 1: Using ANI sensor
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