Repair Test Specifications; General Unit Test - Welch Allyn Spot Vital Signs LXi Service Manual

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Repair Test Specifications

This appendix refers to the Spot Vital Signs LXi without pneumatics (tubing and cuff),
temperature probe, SpO
Use the Repair Software for the performing the tests on the Spot Vital Signs LXi. The
standard test voltage, unless otherwise stated is 6.5 Vdc (+0/-0.25 Vdc). Unless
otherwise stated, all calibrated volumes are ±10cc of the stated volume.

General Unit Test

A-D Noise Test
The A-D Noise Test is defined as the amount of noise on the Spot Vital Signs LXi A-D
pressure channel; over a 1 second sample time while 0.0 mmHg is applied to the Device
pressure port. The maximum limit is 0.050 mmHg.
Leak Test
The Leak Test is defined as the amount of pressure drop that is recorded over a 15-second
interval with a 100cc cylinder attached to the Spot Vital Signs LXi pressure port and that
volume having a stabilized pressure of 250 mmHg. The maximum limit is 6 mmHg.
Inflation Test
The Inflation Test is defined as the amount of time the Spot Vital Signs LXi pump can
inflate a 250 cc cylinder from 5 mmHg to 210 mHg. The maximum limit is 7 seconds.
Dump Test
The Dump Test is defined as the amount of time it takes Spot Vital Signs LXi to deflate a
500 cc cylinder from 260 mmHg to less than 15 mmHg. The maximum limit is 10
seconds.
Pneumatic Accuracy Test
Enter the Internal Configuration Mode to perform this test (see "Temperature Functional
Check" on page 58).
Perform an Auto-zero before starting this test (see "Temperature Functional Check" on
page 58). The Pneumatic Accuracy test is defined as the comparison of Spot Vital Signs
LXi's pressure measurement and applied pressure at 0, 50, 150, and 250 mmHg. The
probe, or main battery attached, unless otherwise noted.
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