A- 1
APPENDIX
A1
Integrity Tests
A2
Error Types
A3
User-Correctable Error Codes
A4
Failure Error Codes
A5
Internally Corrected Error Codes
A1
INTEGRITY TESTS
The N -3100 routinely performs internal system integrity tests to verify and
monitor proper operation. As a result, error codes are recorded in the internal
Error Log and codes may be displayed on the monitor front-panel display.
These error codes help establish a starting point for troubleshooting the
N-3100.
Failure error codes are produced by the N -3100 when one of the following
automatic integrity tests detects an error:
•
POST (Power-On Self-Test) and Watchdog: The POST tests and verifies
microprocessor memory, display, speaker, communications, time sense
device, control logic, and blood pressure module
hardware. The watchdog
circuit monitors the operational status of the microprocessor.
•
Background Test: Background tests periodically run during normal
operation and check the memory integrity and microprocessor operation.
Internal communication variables and parameters are checked for the
appropriate values and timeliness.
•
Failure Error Detection: A failure error may occur at any time. The
failure error detection process attempts to make an entry into the Error
Log, displays an error code, sounds an alarm, and places the instrument
into a state (including ceasing monitoring) that minimizes the chance of
additional risk to patient or caregiver.
