Philips 862474 ユーザーズマニュアル
Performance Procedures
4-28
Testing the Monitor
LED Excitation
Test
This procedure uses normal system components to test circuit operation. A SpO2, adult
finger, reusable sensor is used to examine LED intensity control. The red LED is used to
verify intensity modulation caused by the LED intensity control circuit.
finger, reusable sensor is used to examine LED intensity control. The red LED is used to
verify intensity modulation caused by the LED intensity control circuit.
Step
Action
1
Connect an SpO
2
sensor to the monitor.
2
Press the On/Standby button to turn the monitor On.
3
After the monitor completes its normal power-up sequence, verify that the sensor
LED is brightly lit.
LED is brightly lit.
4
Slowly move the sensor LED in proximity to the photo detector element of the
sensor. Verify, as the LED approaches the optical sensor, that the LED intensity
decreases.
sensor. Verify, as the LED approaches the optical sensor, that the LED intensity
decreases.
5
Open the sensor and take note that the LED intensity increases.
6
Repeat Step 5 and the intensity again decreases. This variation is an indication
that the micro-processor is in proper control of LED intensity.
that the micro-processor is in proper control of LED intensity.
7
Turn the monitor Off.