Section 2 - Service
4 WELCH ALLYN ATLAS MONITOR
SERVICE MANUAL 6200-43E REV. A
ECG Test
SpO
2
Test
2.2.9 ECG Test:
Use a calibrated simulator to check
performance.
NOTE: There is no calibration for the ECG or
impedance Respiration subsystems.
If the performance does not match up to that
expected using a calibrated simulator then
there could be a problem with the cable, leads,
connectors, wiring or the main board itself. If
the main board is faulty then replace it.
2.2.10SpO
2
Tests:
Need:
Appropriate Phantom finger set
SpO
2
cuff and cable
Or:
Nellcor or Nonin (as fitted) simulator
(replaces cuff to drive subsystem)
Or:
Calibrated SpO
2
simulator that has a cuff
fitting that simulates a perfused finger
Nonin: Settings for NoninPatient Simulator
8000S are 98% O
2
/ 80 BPM. SpO
2
board
accuracy after 25 second stabilization period
must be within +/-2%O
2
and +/- 2BPM.
Nellcor: Settings for Nellcor Patient Simulator
SRC-2 are 81% O
2
and 112 BPM. SpO
2
board
accuracy after 25 second stabilization period
must be within +/-2% O
2
and +/- 2 BPM.
2.2.11 TEMP ACCURACY VERIFICATION
Need:
Calibrated thermometer (DIGITAL OR GLASS)
small insulated container with cover for warm water
2.2.11.1Fill container wtih approximately 96 degree
F water
2.2.11.2Attach temperature probe neaqr the sensing
part of the thermometer and insert into the
warm water.
2.2.11.3Accuracy must be within +/- 0.2 degrees F.
Temperature Test
NOTE:There is no
calibration for the SpO
2
and
Pulse subsystem. If the
performance does not
match up to that expected
using a calibrated simulator,
or the Phantom finger set,
then the subsystem board
must be replaced.
NOTE:
Section 3 of this Service
Manual contains
troubleshooting steps for
the ECG subsystem.
These tests will help
determine if the main
board is faulty.
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