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Keysight PXIe Chassis Family Startup Guide
As you can see, there are Alarm Occurred indicators on the right side of the
Monitor screen. These alarms are enabled by default and operate as described in
the following table. If the chassis is operating normally and is using the default
alarm thresholds, none of the alarms should be set. For information on configuring
these alarms to other than their default thresholds, see the
Keysight PXIe Chassis
.
Family User Guide
Tab
Alarm
Description
Fan speed
tab
Fan speed
alarm
The fan speed alarm is illuminated if the speed of any of the three fans drops below 1200 RPM.
The alarm is latched and will persist even if all fans resume operation above 1200 RPM. The fan
speed alarm can be cleared using its
button; however, if any of the three fans are still
Clear
operating below 1200 RPM when the Clear button is clicked, the fan speed alarm will remain
illuminated.
Temperature
tab
Temperature
alarm
The temperature alarm is illuminated if the temperature reported by any of the eight temperature
sensors is above 70 °C. The alarm is latched and will persist even if all temperature sensors
subsequently report temperatures below 70 °C. The temperature alarm can be cleared using its
button; however, if any of the temperature sensors are still reporting a temperature above 70
Clear
°C when the
button is clicked, the temperature alarm will remain illuminated.
Clear
Voltage tab
3.3V alarm
For 3.3V alarm, the factory default limits are plus and minus 10% around the nominal values. Each
of the other four voltage alarms has upper and lower voltage limits of 5% about the nominal
voltage.
For example, the 12V alarm has an upper voltage limit of 12.6V and a lower voltage limit of 11.4V.
A particular voltage alarm is illuminated if that voltage falls outside of the range specified by the
upper and lower voltage limits. The alarm signal is latched and will persist even if the voltage
subsequently returns to within the specified range. The voltage alarm can be cleared using the
button; however, if the voltage is still outside of the specified range when the
button is
Clear
Clear
clicked, the voltage alarm will remain illuminated.
5V alarm
5Vaux alarm
12V alarm
12V alarm
Reference
clock tab
10 MHz
reference
clock
source
changed
alarm
This alarm is illuminated if the 10 MHz reference clock source changes. The chassis reference
clock can originate in three different places:
- Internal: Electronics within the chassis source the clock.
- External: The clock arrives from outside the chassis at the rear panel.
- System Time Slot: The reference clock is sourced by a timing module within the chassis.
The Alarm indicator on this screen indicates whether or not a change in clock source has occurred
since the last time the chassis was booted up, or the alarm condition was cleared.
This alarm, like the other alarms, is latched and can be cleared using its
button.
Clear
PCIe Link tab
The PCIe link configuration can be viewed from the Monitor tab of the SFP. The PCIe link
configuration can be viewed from the Monitor tab of the SFP.
