Welch Allyn Connex Service Manual page 100

96 Functional verification and calibration
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4. Give the device up to 30 seconds to stabilize, and verify a displayed pulse rate of 60
±1 bpm and a displayed SpO2 of 75% ±1 sat point.
5. Set the SRC-MAX pulse rate to 200 bpm.
6. Give the device up to 30 seconds to stabilize, and verify a displayed pulse rate of 200
±2 bpm.
7. Set the SRC-MAX SpO2 saturation percentage to 90.
8. Give the device up to 30 seconds to stabilize, and verify a displayed SpO2 saturation
level of 90% ±1 sat point.
9. Disconnect the SRC-MAX.
SureTemp temperature system test
The SureTemp temperature system test is performed using a calibration key (cal-key).
The calibration key tests the system using a fixed resistance to display a temperature of
97.3 ± 0.3 °F (36.3 ± 0.2 °C).
Perform a SureTemp temperature system test
1. With the system power on and the temperature probe in the well, disconnect the
probe cable from the temperature input connector on the front of the device.
2. Connect the calibration key to the temperature input connector.
3. Remove the probe from the well.
4. Verify that the displayed temperature is 97.3 ± 0.3 °F (36.3 ±0.2 °C).
SureTemp temperature probe and system test
Use this procedure to test the temperature function while verifying the temperature
probe. To achieve accurate results, you must perform this test with the device in Direct
mode.
Test each probe at the low, medium, and high set points on the tester. Repeat the
procedure for each thermometer and temperature to test.
Set up the 9600 Plus calibration tester
Place the tester on a level surface away from sunlight, drafts, and other sources of heat
or cold.
The tester takes approximately 20 minutes to heat to the lowest set point.
To expedite testing, Welch Allyn recommends the following practices:
• To eliminate waiting for the tester to heat to the next set point, use three testers,
each set to one of three different set points.
• When using only one tester to test several thermometers at all three temperatures,
test all thermometers at one set point before proceeding to the next set point.
• To eliminate waiting for the tester to cool down, start at the lowest set point.
Because the tester does not have an internal fan, it requires more time to cool down
than to heat up.
The SRC-MAX initializes to default condition where the four test parameter LEDs
are lit closest to their selector buttons.
The default pulse rate is 60 bpm and the default SpO2 is 75%.
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Welch Allyn Connex Integrated Wall System