44 Keysight PXIe Chassis Family User Guide
Chassis Alarm Architecture Power-on Default Alarm Thresholds
Power-on Default Alarm Thresholds
This section summarizes the power-on default values of the chassis alarm
thresholds as well as the valid range over which the alarm thresholds can be set.
The phrase “power-on default” means that, regardless of how the thresholds are
changed while power is applied, the thresholds return to factory-defined default
values when the chassis power is cycled. For example, if you use the SFP to set
the Minimum Fan Speed Alarm Threshold to 500 RPM, this setting will not persist
through a power cycle; the Minimum Fan Speed Alarm Threshold will be restored
to the power-on default limit RPM value when the chassis is power cycled.
.
Table 3 Power-on Default Alarm Thresholds for the M9010A, M9018B, and M9019A Chassis
Threshold Default Threshold Settable Range
Minimum Fan Speed Alarm Threshold 900 RPM for M9010A.
1200 RPM for other.
1 to 10,000 RPM
Maximum Temperature Alarm Threshold 70 °C 1 to 70 °C
3.3V Rail Upper Voltage Limit 3.630V (3.3V + 10%) nominal value +0.01% up to
nominal value + 20%
Lower Voltage Limit 2.970V (3.3V - 10%) nominal value -0.01% down to
nominal value -20%
5V Rail
1
Upper Voltage Limit
5.25V
nominal value +0.01% up to
nominal value + 20%
Lower Voltage Limit 4.75V
nominal value -0.01% down to
nominal value - 20%
12V Rail Upper Voltage Limit 12.6V nominal value +0.01% up to
nominal value +20%
Lower Voltage Limit 11.4V nominal value -0.01% down to
nominal value -20%
–12V Rail Upper Voltage Limit -11.4V nominal value +0.01% up to
nominal value + 20%
Lower Voltage Limit -12.6V nominal value -0.01% down to
nominal value -20%
+5.0V
aux
2
Upper Voltage Limit 5.25 V nominal value +0.01% up to
nominal value + 20%
Lower Voltage Limit 4.75 V
nominal value -0.01% down to
nominal value - 20%
1
Note that the 5V rail initially has voltage limits of ±5% around the nominal value. However, the IVI driver will expand the 5V limits
to ±10%. Because the PXIe chassis SFP uses the IVI.NET driver, the SFP also expands the 5V limits to ±10%
2
In the PXIe Chassis Family Soft Front Panel, the +5V
aux
is shown as +5.0V_STANDBY.
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