CSIII (MODEL 4310B) User’s Guide
DS50003057A-page 20
2021 Microchip Technology Inc.
3.6
ALARMS
The CsIII microprocessor system provides continuous monitoring of system power sup
-
plies, signal quality, and numerous physics package operating parameters, as indi
-
cated on the Monitor3 main panel. Alarms are generated in the event that any of the
parameters deviate from its acceptable value.
Alarms are classified into two types:
• Minor Alarm—Indicates out of nominal specification that should be noted but is
not expected to impact instrument performance.
• Major Alarm—Indicates detection of a fault that causes the instrument to fail to
meet specification.
In the event of Minor Alarm, the ALARM LED illuminates on the instrument front panel,
in addition to the POWER and LOCK LEDs. All outputs remain active and the ALARM
LED remains illuminated for as long as the alarm condition persists.
In the event of Major Alarm, the LOCK LED turns off and the ALARM LED illuminates.
All outputs are disabled. If the alarm condition ceases, the instrument restarts from its
initial power-on condition. The current list of alarms is indicated, by hexadecimal code
in the alarm list on the Monitor3 main panel. To see an annotated list of alarms, clear
alarms, or set the priority of the restart alarm, select
Alarms
... from the
View
menu.
FIGURE 3-6:
Alarms.
The Alarms panel, shown above, enumerates all alarms currently present in the sys
-
tem. To clear standing alarms, press the Reset Alarms button. The list of pending
alarms is updated at the next regular polling interval. For a complete list of possible
Chapter 4. “Maintenance and Troubleshooting”
There are two possible alarm strategies in the event of unit restart, which may be
selected from the Restart Alarm Strategy pull-down menu and uploaded to the CsIII by
pressing the Apply Changes button. These are:
• Non-Critical (Default) - In the event of restart, the 0x16 alarm flag is set, outputs
are muted during re-acquisition and restored upon successful lock. The 0x16
alarm flag remains set until cleared by the user.
• Critical - In the event of restart, the 0x16 flag is set, outputs are muted during
reacquisition and remain muted thereafter until the user clears the 0x16 alarm
flag.
Summary of Contents for 4310B
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