User's Manual

CENTRON Meter Technical Reference Guide G-1
Term Description
annunciator A Liquid Crystal Display (LCD) label that is displayed to identify a particular
quantity being displayed
baud Unit of data transmission signalling speed, roughly analogous to bits per second
(bps)
display duration The programmed number of seconds that a quantity is displayed on the LCD before
it is replaced with the next quantity in the display sequence
EEPROM Electrically Erasable Programmable Read Only Memory. A memory chip that can
only be erased by an electrical signal (retains data during a power outage)
EPROM Erasable Programmable Read Only Memory. Similar to EEPROM except it requires
ultraviolet light to be erased
electronic detent An algorithm in firmware which restricts the device to metering energy flow only to
the customer (unidirectional metering)
firmware Computer programs stored in non-volatile memory chips (ROMs, PROMs, EPROMs,
EEPROMs, etc.)
fixed decimal A display format that always retains the same number of digits to the right of the
decimal point
floating decimal A display format that allows a maximum number of digits to the right of the
decimal, but can display any number of digits to the right of the decimal equal to or
less than that number specified
LCD Liquid Crystal Display
LED Light-Emitting Diode
magnetic reed switch A mechanical switch consisting of a thin metal contact which is closed by an
external magnetic field
nonvolatile memory See EEPROM
RS-232 A communication media whereby information is transmitted through a serial bit
stream
GLOSSARY