Led Current To Photodetector Current Test; Figure 11: Block Diagram - Nellcor OxiMax SRC-MAX Technical Manual

Performance Verification

LED Current to Photodetector Current Test

Note:
1. Connect a 10 ohm resistor (R1 in Figure 11) to pin 3 of a
2. Connect the positive side of the Signal generator to pin 2
3. Connect the oscilloscope channel 1 (+) to the junction of
4. Connect the oscilloscope channel 1 (-) to the junction of
22
• Signal/Function Generator, able to deliver 0 to ±5
volts peak-to-peak at 1,000 Hz, 100 mA
• Pulse oximeter or monitor
• ECG monitor (RA, LA, LL)
The initial setting on the Signal Generator is 1000
Hz, Square wave, 0 to 5 volts peak-to-peak. The
RED and IR LEDs will be tested separately.

Figure 11: Block Diagram

9-pin D-sub female connector. The other side of the 10
ohm resistor should be connected to the Signal
Generator's ground. See Figure 11.
of the 9 pin D-sub female connector.
pin 3 and the 10 ohm resistor.
the Signal Generator's ground and the 10 ohm resistor.