Functional Verification - Welch Allyn Spot Vital Signs Service Manual

Service Manual

Functional verification

Complete all steps in this section before returning a Spot Vital Signs for service.
Verify that the pressure meter used (if not specified by this service manual) is calibrated
and the calibration certificate of the meter is traceable to NIST. The pressure meter
testing the Spot Vital Signs must have an accuracy of better than "3 mmHg.
Subtract the rated accuracy of the pressure measurement standard from the "3 mmHg
rated accuracy of Spot Vital Signs. This is the pass/fail criteria to determine if the device
is within calibration. If the differences between Spot Vital Signs and the pressure
measurement standard are within the pass/fail criteria at all specified pressures, then
the device is within calibration.
All test specifications are found in Appendix A.
1. Use the pneumatic tubing to connect the Spot Vital Signs to the test station
26). Disconnect the battery and connect the power supply. Verify the IR Data
Interface is free from obstacles.
2. Open the Spot Vital Signs repair software and verify the computer is communicating
with the Spot Vital Signs.
3. Hold down the Blood Pressure Start/Stop button while powering on the Spot Vital
Signs. The Spot Vital Signs enters the configuration test mode. After the LCD
displays the software versions press the Mode button to display CAL. Spot Vital Signs
automatically performs an auto zero.
4. Attach a pneumatic clamp to the 100 cc and the 250 cc cylinder and then remove the
clamp from the 500 cc cylinder.
5. Select Test/Calibration on the computer screen. The dialog box displays the Spot
Vital Signs manometer and battery readings and the valve and pump status.
To verify the blood pressure calibration:
1. Push the Spot Vital Signs Blood Pressure Start/Stop button to close the valve.
2. Pump the hand bulb to the set the pressures: 0 mmHg, 50 "5 mmHg, 150 "5 mmHg,
250 "5 mmHg. Verify each pressure is within "3 mmHg of the target pressure (except
for 0 mmHg which should be within "1.0 mmHg).
3. Press the Mode button until the LCD window reads "bat."
To verify the voltage reading:
1. Set the power supply to 5.6 (+0.3 / -0.0 Vdc).
2. Verify that the voltage reading meets the test specification.
3. Return the power supply to 6.5 Vdc (+0/- 0.25 Vdc) upon completion of this test.
4. Select OK to exit the Test Calibration dialog box.
Functional overview 21
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