Covidien Nellcor GR101704, Service Manual

Page: 148 / 236

Modification and Testing
10-26 Service Manual
ing systems. The following table provides a brief description of each test. Use
the PLETH view for all functional testing.
Once the functional tester is attached to the cable and the unit is turned on,
complete all of the tests in sequence, beginning with BPM, then %SpO
2
, then
Modulation, and finally Light Level.

Note:
The SRC-MAX selectable indicator LEDs may extinguish if there is a delay in
proceeding through the above tests. This is normal operation in order to increase the
SRC-MAX battery charge.

Note:
Pressing a button on the SRC-MAX during the test procedures may be requested,
changing a certain parameter. If the SRC-MAX LEDs are not lit, press the button twice.
Pressing the button once causes the indicators to relight and pressing twice initiates
the change.
BPM Test
To perform the BPM Test
1.
Ensure the monitoring system is connected to an AC power source.
2.
Connect a DOC-10 interface cable to the sensor port.
3.
Turn on the monitoring system by pressing the POWER ON key.
4.
Verify the word PLETH appears at the top left corner of the monitoring screen.
Table 10-5. Functional Tests Options
Tests Descriptions
BPM Test The test procedure simulates an Nellcor™ OxiMax sensor attached to a patient
indicating a pulse rate of 60 BPM ±3 BPM and 200 BPM ±6 BPM.
SpO
2
Test The test procedure simulates a Nellcor™ OxiMax sensor attached to a patient
indicating a 75% and 90% blood oxygen saturation ±2 points.
Modulation Level Test The test procedure simulates an Nellcor™ OxiMax sensor attached to a patient
indicating low pulsatile strength between 0.4% and 0.6%, and high pulsatile
strength between 4.5% and 5.5%.
Light Level Test The test procedure simulates an Nellcor™ OxiMax sensor attached to a patient
indicating low light levels, 750 nAi ±10%, and high light levels, 3,000 nAi ±10%,
passing through the patient at the sensor site.