DARPA Defense Advanced Research Projects Agency (The US
developer of the TCP/IP protocol etc.)
DBDL Dead bus dead line
DBLL Dead bus live line
DC Direct current
DFC Data flow control
DFT Discrete Fourier transform
DHCP Dynamic Host Configuration Protocol
DIP-switch Small switch mounted on a printed circuit board
DI Digital input
DLLB Dead line live bus
DNP Distributed Network Protocol as per IEEE Std 1815-2012
DR Disturbance recorder
DRAM Dynamic random access memory
DRH Disturbance report handler
DSP Digital signal processor
DTT Direct transfer trip scheme
ECT Ethernet configuration tool
EHV network Extra high voltage network
EIA Electronic Industries Association
EMC Electromagnetic compatibility
EMF Electromotive force
EMI Electromagnetic interference
EnFP End fault protection
EPA Enhanced performance architecture
ESD Electrostatic discharge
F-SMA Type of optical fiber connector
FAN Fault number
FCB Flow control bit; Frame count bit
FOX 20 Modular 20 channel telecommunication system for speech,
data and protection signals
FOX 512/515 Access multiplexer
1MRK 511 391-UUS C Section 5
Glossary
670 series 2.2 ANSI 51
Communication protocol manual