Specifications

Processor Presence and Population Check QSSC-S4R Technical Product Specification
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Power Supply 2 B2h
Power Supply 3 B4h
Power Supply 4 B6h
24.24.2 PMBus -specific Sensor Support
The following sensor types are supported for systems that contain PMBus-compliant power supplies and a PMBus-
compliant power distribution board.
24.24.2.1 Power Supply Input Power Sensor
This analog sensor monitors AC power input to the system.
IPMI Sensor Characteristics
x Event reading type code: 01h (Threshold)
x Sensor type code: 0Bh (Other Units)
x Rearm type: Auto
x Configured thresholds: Upper critical/non-critical
x Event generation: Assertion/deassertion events for all supported thresholds
24.24.2.2 Power Supply Output Current Sensor
The BMC supports one Power Supply Output Current sensor for each system power supply module. This sensor is
only supported for systems that use PMBus-compliant power supplies. The BMC reads current for the main 12 V power
rail coming out of the power supply and expresses the reading as the percentage of max rated output current for the
power rail.
This monitoring capability is instantiated in the form of IPMI analog/threshold sensors.
IPMI Sensor Characteristics
x Event reading type code: 01h (Threshold)
x Sensor type code: 03h (Current)
x Rearm type: Auto
x Configured thresholds: Upper critical/non-critical
x Event generation: Assertion/deassertion events for all supported thresholds
24.24.2.3 Power Supply Temperature Sensor
The BMC supports two Power Supply Temperature sensors for each system power supply module. One temperature
sensor uses in standby mode, the other uses in active mode. The standby sensors would be available only when the
system in standby mode, reading for these sensors in power on state would result in "reading not available" state. The
active mode sensors would be available only when system power on more then 25 seconds due to BMC delays 25
seconds after DC Power On to access these sensors. Reading for these sensors in standby state and power on less
then 25 seconds would result in "reading not available" state. Moreover, the standby sensors and active mode sensors
have different thresholds.
These sensors are only supported with systems that use PMBus-compliant power supplies. This monitoring capability
is instantiated in the form of IPMI analog/threshold sensors. The location of the physical temperature sensor in the
power supply helps to provide a measurement of inlet air temperature to the power supply. These sensors are
implemented as auto rearm.
24.25 Power Unit Management
The BMC supports IPMI type 09h, power unit sensor, using the following offsets:
Table 183. Power Unit Sensor Offsets
Offset Description Event Logging
00h Power off – Asserted whenever the system DC power is off. Assertion and Deassertion
04h AC lost – Asserted momentarily for event generation when AC Assertion and Deassertion