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Performance Verification
General Operation
LED Excitation Test
16
The following tests are check overall system performance:
•
LED Excitation Test below.
•
Operation with a Live Subject on page 17.
This procedure uses normal system components to test circuit operation. A
Nellcor O
M
oxygen transducer (sensor), model MAX-A, is used to
XI
AX
examine LED intensity control. The red LED is used to verify intensity
modulation caused by the LED intensity control circuit.
1. Connect the N-550B to an AC power source.
2. Connect a DOC-10 pulse oximetry cable to the N-550B sensor port (1).
3. Connect a MAX-A sensor to the sensor-input cable.
4. Press the Power On/Off button to turn the N-550B on.
5. Leave the sensor open with the LEDs and photo detector visible.
6. After the N-550B completes its normal power-up sequence, verify that
the sensor LED is brightly lit.
1. Sensor Port
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