SERIES
9900
9000
SERIES
GAUSSMETERS
SECTION V I I
V
I
I
-A DIAGNOSTIC OVERVIEW
DIAGNOSTIC
ERROR CODES
Upon power-up, the gaussmeter verifies that all internal components are
operating correctly before field measurements begin. This includes
existing probe interface modules and their probes.
If a
major
error occurs, the gaussmeter will halt operations until the problem
is rectified. A
major
error is one that prevents the gaussmeter from
producing accurate field measurement results for
all
channels. A
major
error
is usually located in the digital section or power supply area.
If a
minor
error occurs, the gaussmeter will inform the user, but will continue
to initialize the remaining electronics and begin field measurements. A
minor
error is one that prevents accurate field measurements from some, but not all,
existing channels, or failures in areas that do not affect field measurements
such as communications, setup storage and so on.
VII-B POWER-UP SEQUENCE
When the gaussmeter is first turned on, the display's backlight will turn on and
the "F.W. BELL" logo will appear. Beneath the logo will appear messages
indicating the state of the power-up procedure with the first being
"INTERNAL DIAGNOSTICS IN PROGRESS." At this point, three paths are
possible:
1) If no errors are found, the gaussmeter will retrieve calibration data from
each probe interface module and probe, initialize the internal electronics and
enter the MEASURE mode of operation.
2) If a
minor error
is detected, the "INTERNAL DIAGNOSTICS IN
PROGRESS" message will be replaced with a "MINOR DIAGNOSTIC ERROR
- xxxxx" message. The "xxxxx" is a five-digit number indicating the type of
failure. Refer to Section VII-C. The message will be held for a short period of
time to allow the user to record the error code. The gaussmeter will then
proceed as it does if no errors are found (Item-1 above).
3) If a
major
error is detected, the "INTERNAL DIAGNOSTICS IN
PROGRESS" message will be replaced with a "MAJOR DIAGNOSTIC ERROR
- xxxxx" message. The "xxxxx" is a five-digit number indicating the type of
failure. Refer to Section VII-C. The gaussmeter will halt operations at this
point.
Once in the MEASURE mode, the gaussmeter determines the number of
probe interface modules present, and then the number of probes
connected. If the module/probe combination is recognized, the interface
module's red LED will light. The display screen will be formatted accordingly.
(See Section III.)
The procedure just described assumes that the basic core of the
gaussmeter, the processor, display and digital power supply, is operational. If
a catastrophic error prevents any of these from operating, the power-up
procedure will not be executed, and the MEASURE mode will not be
entered. This is typically accompanied by a blank display or one that contains
illegible characters and patterns.
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