Spot Vital Signs LXi Service Manual - Frank's Hospital Workshop

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General Unit Test
A-D Noise Test
Leak Test
Inflation Test
Dump Test
Repair Test Specifications
This appendix refers to the Spot Vital Signs LXi without pneumatics (tubing and cuff),
temperature probe, SpO 2 probe, or main battery attached, unless otherwise noted.
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.
The A-D Noise Test is defined as the amount of noise on the Spot 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.
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 LXi pressure port and that volume
having a stabilized pressure of 250 mmHg. The limit is 5 mmHg maximum.
The Inflation Test is defined as the amount of time the Spot LXi pump can inflate a 250 cc
cylinder from 5 mmHg to 210 mHg. The limit is 7 seconds, maximum.
The Dump Test is defined as the amount of time it takes Spot LXi to deflate a 500 cc
cylinder from 260 mmHg to less than 15 mmHg. The limit is 10 seconds.
Pneumatic Accuracy Test
Enter the Internal Configuration Mode to perform this test (see “Internal Configuration
Mode” on page 24).
Perform an Auto-zero before starting this test (“Blood Pressure Functional Check”, Step 1
on page 35 through Step 5 on page 35). The Pneumatic Accuracy test is defined as the
comparison of Spot LXi’s pressure measurement and applied pressure at 0, 50, 150, and
250 mmHg. The specification for each reading is within ±3 mmHg of the target pressure
except for the 0 mmHg reading which is within ±1.0 mmHg.
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