Figure 14: Ir Led Low Light Setting - Nellcor OxiMax SRC-MAX Technical Manual

Performance Verification
Note:
5. Select the High Light Setting on the SRC-MAX.
6. Measure the peak-to-peak voltage across the 1 meg ohm
26

Figure 14: IR LED Low Light Setting

The peak-to-peak voltage tolerance includes a
possible probe impedance error.
resistor on Channel two of the Oscilloscope. The peak-to-
peak voltage should be 2.4 to 3.6 volts peak-to-peak. See
Figure 15.