Intel SC5299UP SC5299UPNA User Manual

Word/Acronym 

Definition 

Over-current 

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. 

OVP 

Over Voltage Protection 

PDB 

Power Distribution Board 

PFC 

Power Factor Correction 

PSU 

Power Supply Unit 

PWOK 

A typical logic level output signal provided by the supply that signals the Server System that all 
DC output voltages are within their specified range 

RI Ring 

Indicate 

Ripple 

The periodic or random signals over frequency band of 10 Hz to 20 MHz. 

Rise Time 

Rise time is defined as the time it takes any output voltage to rise from 10% to 95% of its 
nominal voltage. 

Sag 

The condition where the AC line voltage drops below the nominal voltage conditions 

SCA 

Single Connector Attachment 

SDR 

Sensor Data Record 

SE Single-Ended 

SSI 

Server Standards Infrastructure 

Surge 

The condition where the AC line voltage rises above nominal voltage. 

THD 

Total Harmonic Distortion 

UART 

Universal Asynchronous Receiver Transmitter 

USB 

Universal Serial Bus 

VCCI 

Voluntary Control Council for Interference 

VSB or Stand By 

An output voltage that is present whenever AC power is applied to the AC inputs of the supply.