Welch Allyn Spot Vital Signs 4400, Service Manual

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2. Connect the dual lumen tubing to the device.
3. Connect one end of the tubing to the pressure meter and the other end to the test box.
Ensure each end is connected tightly and there are no leaks.
4. To initiate the verification process, touch
Close Valve
.
5. Use the blood pressure bulb to adjust the pressure to each threshold of 50/150/250 mmHg.
6. Compare the pressure displayed on the NIBP Pressure Verification screen and the pressure
meter.
SpO2 tests
Select the procedure here that applies to your configuration to test the device's SpO2 function.
Connect the test equipment according to the test setup diagram for your configuration presented
here.
SpO2 test setup
For the SpO2 test, connect the test equipment shown below.
No. Item
1 Spot 4400
2 SpO2 simulator
3 Power supply
Perform an SpO2 accuracy test
Use this procedure to test only the device SpO2 function.
1. Power on the device.
2. Connect the SpO2 functional simulator to the SpO2 input connector.
NOTE In the following tests, if the simulator defaults are outside
the device alarm limits, adjust the limits or silence the alarms.
3. Set the simulator SpO2 saturation to 90% and pulse rate to 60 bpm.
4. Give the device up to 30 seconds to stabilize.
Service manual Functional verification and calibration overview 75