List of abbreviations   
 
  SIMATIC IPC547D 
122  Operating Instructions, 06/2011, A5E03473780-01 
Abbreviatio
n 
Term  Meaning 
VGA  Video Graphics Array  Video adapter which meets industrial 
standard 
VRM  Voltage Regulator Module   
VT  Virtualization Technology  Intel technology with which a virtually 
closed environment can be made 
available. 
VT-D  Virtualization Technology for Directed I/O  Enables the direct assignment of a 
device (e.g. network adapter) to a virtual 
device. 
W2k  Windows 2000   
WAN  Wide Area Network   
WAV  Wave Length Encoding  Loss-free file format for audio data 
WD  Watchdog  Program monitoring with error detection 
and alarming. 
WLAN  Wireless LAN  LWireless local area network 
WoL  Wake on Local Area Network   
WWW  World Wide Web   
XD  Execute Disable Capability  Hardware implementation 
XGA  Extended Graphics Array  Graphic standard, maximum resolution 
1024x768 pixels.