Intel ATX User Manual

Introduction
10 Design Guide
Acronym/Convention
/Terminology
Description
Monotonically
A waveform changes from one level to another in a steady fashion,
without oscillation.
MTBF Mean time between failure.
Noise
The periodic or random signals over frequency band of 0 Hz to 20
MHz.
Non-ASM
Computers that do not use Alternative Sleep Mode use traditional
Sleep Mode (ACPI S3).
Overcurrent
A condition in which a supply attempts to provide more output
current than the amount for which it is rated. This commonly
occurs if there is a "short circuit" condition in the load attached to
the supply.
PFC Power Factor Correction.
P-P Peak to Peak Voltage Measurement.
PWR_OK
PWR_OK is a “power good” signal used by the system power
supply to indicate that the +5VDC, +3.3 VDC and +12VDC outputs
are above the under voltage thresholds of the power supply.
Ripple Noise
The periodic or random signals over a frequency band of 0 Hz to
20 MHz.
Rise Time
Rise time is defined as the time it takes any output voltage to rise
from 10% to 90% of its nominal voltage.
Surge
The condition where the AC line voltage rises above nominal
voltage.
VSB or Standby Voltage
An output voltage that is present whenever AC power is applied to
the AC inputs of the supply.
Table 1-2: Support Terminology
Category Description
Optional
The status given to items within this design guide, which are not
required to meet design guide, however, some system applications
may optionally use these features. May be a required or
recommended item in a future design guide.
Recommended
The status given to items within this design guide, which are not
required to meet design guide, however, are required by many
system applications. May be a required item in a future design guide.
Required
The status given to items within this design guide, which are
required to meet design guide and a large majority of system
applications.
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Intel ATX Specifications

General

Brand	Intel
Model	ATX
Category	Power Supply
Language	English