400 Practical Modern SCADA Protocols: DNP3, 60870.5 andRelatedSystems E-1 Digital circuit operating at 2048 Mbps. Corresponds to 30-channels in the European digital hierarchy. EBCDIC EDAC EEPROM EIA EIA-232-C EIA-422 EIA-423 EIA-449 EIA-485 EISA EMI/RFI EMS Encoder EPROM Equalizer Error rate Extended Binary Coded Decimal Interchange Code. An eightbit character code used primarily in IBM equipment. The code allows for 256 different bit patterns. Error Detection and Correction. Electrically Erasable Programmable Read Only Memory. Non-volatile memory in which individual locations can be erased and re-programmed. Electronic Industries Association. A standards organization in the USA specializing in the electrical and functional characteristics of interface equipment. Interface between DTE and DCE, employing serial binary data exchange. Typical maximum specifications are 15 m at 19200 baud. Interface between DTE and DCE employing the electrical characteristics of balanced voltage interface circuits. Interface between DTE and DCE, employing the electrical characteristics of unbalanced voltage digital interface circuits. General-purpose 37-pin and 9-pin interface for DCE and DTE employing serial binary interchange. The recommended standard of the EIA that specifies the electrical characteristics of drivers and receivers for use in balanced digital multi-point systems. Enhanced Industry Standard Architecture. Electromagnetic Interference/Radio Frequency Interference. ‘Background noise’ that could modify or destroy data transmission. Expanded Memory Specification. The activation of a function of a device by a defined signal. A circuit which changes a given signal into a coded combination for purposes of optimum transmission of the signal. Erasable Programmable Read Only Memory. Non-volatile semiconductor memory that is erasable in ultra violet light and re-programmable. The device that compensates for the unequal gain characteristic of the signal received. The ratio of the average number of bits that will be corrupted to the total number of bits that are transmitted for a data link or system.
Appendix A: Glossary 401 ESS Etherloop Ethernet ETSI Extended Service Set (IEEE 802.3 Wireless LANs). Ethernet over the local loop. High-speed customer access technology. Name of a widely used LAN, based on the CSMA/CD medium access method (IEEE 802.3). European Telecommunications Standardization Institute. Farad FCC FCS FDDI FDM FIFO Filled cable FIP Firmware Flame retardancy Floating Flow control FM Frame Frequency FSK FTTC FTTH Full-duplex Unit of capacitance whereby a charge of one coulomb produces a one volt potential difference. Federal Communications Commission. Frame Check Sequence. A general term given to the additional bits appended to atransmitted frame or message by the source to enable the receiver to detect possible transmission errors. Fiber Distributed Data Interface. Frequency Division Multiplexing. First in, First Out. A cable construction in which the cable core is filled with a material that will prevent moisture from entering or passing along the cable. Factory Instrumentation Protocol. A computer program or software stored permanently in PROM or ROM or semi-permanently in EPROM. The ability of a material not to propagate flame once the flame source is removed. An electrical circuit that is above the earth potential. The procedure for regulating the flow of data between two devices preventing the loss of data once a device’s buffer has reached its capacity. Frequency Modulation. The unit of information transferred across a data link. Typically, there are control frames for link management and information frames for the transfer of message data. Refers to the number of cycles per second. Frequency Shift Keying. Fiber to the Curb. Fiber to the Home. Simultaneous 2 way independent transmission in both directions. See Duplex.