Viewing Stored Alarm Data - Agilent Technologies 34980A User Manual

2
Features and Functions

Viewing Stored Alarm Data

If an alarm occurs on a channel as it is being scanned, then that channel's
alarm status is stored in reading memory as the readings are taken.
As alarm events are generated, they are also logged in an alarm queue,
which is separate from reading memory. This is the only place where
non- scanned alarms get logged (alarms during a monitor, alarms generated
by the digital modules, etc.).
• You can store at least 500,000 readings in memory during
• Each time you start a new scan, the instrument clears all readings
• Up to 20 alarms can be logged in the alarm queue. If more than 20
• The alarm queue is cleared by the
Front Panel Operation: View > ALARMS
From the front panel, you can view the first 20 alarms in the queue.
After turning the knob to the desired channel, press the left or right
arrow keys to view the alarm reading. Notice that the annunciators
indicate which alarm is being viewed.
Note: The alarm queue is cleared when you read the alarms.
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a scan. You can read the contents of reading memory at any time,
even during a scan. Reading memory is not cleared when you read it.
(including alarm data) stored in reading memory from the previous
scan. Therefore, the contents of reading memory are always from the
most recent scan.
alarm events are generated, they will be lost (only the first 20 alarms
are saved).
when power is cycled, and by reading all of the entries. A Factory Reset
( command) or Instrument Preset (
*RST
does not clear the alarm queue.
(clear status) command,
*CLS
SYSTem:PRESet
command)
34980A User's Guide