3300/25 Dual Accelerometer Input Monitor Operation Manual
42
16. Self Test
The monitor has three levels of self tests:
SELF TEST
PERFORMED
Power-up
When the monitor is turned on.
Cyclic
Continuous during monitoring
operations.
User-invoked
When you initiate the self test by
temporarily shorting the self-test
pins.
When the monitor detects an error, it displays an
error condition two ways depending on whether the
error is active or stored. An active error is an error
that currently exists. A stored error condition results
from a storable error momentarily occurring after
the last time all errors were cleared.
If the monitor detects an active error, the following
events occur:
•
Monitoring stops until the problem is
resolved
•
The error code is stored in memory and
flashes on the LCD bargraph
•
The
BYPASS
LEDs come on
•
The
OK
LEDs flash at 5 Hz
Active errors that do not flash the
OK
LEDs require
user-invoked self test or may require recycling
power to clear them. If either of these actions fail to
clear the error refer to the Error Codes section.
If the monitor no longer detects an active error and
a stored error exists, the following events occur:
•
Monitoring resumes
If the
OK
LED would otherwise be on, the
OK
LEDs
flash at 5 Hz to indicate that an error code has been
stored
Active Error Indication
Stored Error Indication
