Welch Allyn Spot Vital Signs Service Manual page 70

Welch Allyn, Inc. Spot Vital Signs Service Manual
Revision A
Battery Calibration Requirements
The Unit battery voltage measurement circuit will be calibrated at 5.5 +0.2/- 0 VDC.
The battery calibration factor must be 14,384 to 18,384.
When the Unit battery measurement circuit is successfully calibrated, a calibration signature will be stored in the Unit
memory. The calibration signature can be any of up to four printable characters.
Blank Mode Current Test
The Blank Mode Current Test is defined as the amount of current that is drawn through the battery terminals, all LCD
segments are turned off, the back light is off, the SpO2 mode is turned off. The limit is 200 mA. max.
Back Light(Idle) Current Test
The Back Light Current Test is defined as the amount of current that is drawn through the battery, all LCD segments
are turned on, the back light turned on, the SpO2 mode is turned off. The limit is 400 mA. Max.
Valve/Pump Mode Current Test
The Valve/Pump Mode Current Test is defined as the amount of current that is drawn through the battery terminals, the
Unit is in the Blank Mode, Unit valve and pump actuated to on. The limit is 700 mA, max.
IR Interface Tests
The Unit will be able to communicate through the IR Port. Opening the IR Port and successfully issuing a command
with no errors returned will be sufficient to test the IR Interface.
Interface Test
When given the proper commands, the Spot Display will turn on all segments, turn off all segments, turn on the back
light or turn off the back light. When give the proper command, the spot unit buzzer will come on to ensure operation.
The pass/fail criteria is subjective to the user.
Temperature Option Requirements
Accuracy Testing
The accuracy of the temperature module must be within +/- 0.2F for readings with a nominal temperature of 97.3F
(36.3C) using a Cal Key (5200-25).The unit must be able to read a temperature of 96.4F (35.8C) and a temperature of
106F (41.1C) within +/- 0.3F (+/-0.2C) using a Welch Allyn 9600 Calibrator.
Note: if using a water bath to take temperatures, the temperature of the bath should be between 84F and 106F (28.8 and
41.1C)and the reading must agree within +/-1.0F (0.8C) measuring against a temperature standard that is accurate to
within +/-1.0 F (0.8C).
Temperature Probe Test
The unit will display "188.8" and then "ORL" once the oral probe is removed from the probe housing.
SpO2 Option Requirements
Note: These tests are only performed if configured forSpO2.
SpO2 Functional Test
The SpO2 Functional Test is defined as the ability of the Unit to correctly report an applied SpO2 signals from a
Nellcor SRC2 Simulator. The applied signals are 81% O2, 112 BPM at a saturation level of 100. The limits are +/-3
counts for the O2 readings and +/- 3 counts for BPM readings.
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