Viewing Stored Alarm Data - Agilent Technologies 34972A User Manual

• To set the upper and lower alarm limits on the specified channels, use
the following commands.
CALC:LIMIT:UPPER 5.25,(@103,212)
CALC:LIMIT:LOWER 0.025,(@103,212)
• To enable the upper and lower alarm limits on the specified channels,
use the following commands.
CALC:LIMIT:UPPER:STATE ON,(@103,212)
CALC:LIMIT:LOWER:STATE ON,(@103,212)

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 multifunction module, etc.).
• You can store up to 50,000 readings in memory during 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.
• Each time you start a new scan, the instrument clears all readings
(including alarm data) stored in reading memory from the previous
scan. Therefore, the contents of memory are always from the most
recent scan.
• Up to 20 alarms can be logged in the alarm queue. If more than 20
alarms are generated, they will be lost (only the first 20 are saved).
• The alarm queue is cleared by the *CLS (clear status) command,
when power is cycled, and by reading all of the entries. A Factory
Reset (*RST command) or Instrument Preset (SYSTem:PRESet
command) does not clear the alarm queue.
• Front-Panel Operation: From the front panel, you can view the first
20 alarms in the queue. After turning the knob to the desired
channel, press and
time that the alarm occurred. Notice that the annunciators indicate
which alarm is being viewed.
ALARMS
Note: The alarm queue is cleared when you read the alarms.
Chapter 4 Features and Functions
to view either the alarm reading or the
Alarm Limits
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