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electrical and functional characteristics of equipment.
Emulation
where software allows the printer to imitate another printer.
Emphasized
where text is printed in two passes with a horizontal offset.
Expanded
where characters are printed in one pass at twice their
normal width.
ESC
A single byte ASCII code that initiates an escape sequence.
Corresponding hexadecimal code is <1B>.
Escape Sequence
A series of characters beginning with the code ESC which
activates a printer function.
FCC
Federal Communications Commission
Flow Control
RTS/CTS or XON/XOFF protocol.
Font Quality
where characters are printed in Draft or High Quality Draft.
Form
a document type defined as single-ply, multi-ply or an
envelope.
HQD
High Quality Draft. Two consecutive dot impacts are
delivered (double strike).
Hz
Hertz. The measuring unit for frequency (cycles per second)
ISO
International Standards Organization
IEC
International Electrotechnical Commission
Intercharacter
the space left blank between two consecutive characters.
Spacing
Loadable Character
where resident and/or downloaded characters are used.
Set
LPI
Lines Per Inch.
Mechanical Margin defined by the hardware, this is 0.1" (2.5 mm) from the left,
right and top edges of the document.
NVM
Non Volatile Memory.
Off-line
the state when the communications line between the printer
and the host is not ready for data exchange.
On-line
the state when the communications line between the printer
and the host is ready for data exchange.
Overscore
To draw a line above printed characters and space.
RAM
Random Access Memory.
RS232C
serial interface standard used to connect the printer to the
Glossary
7-2
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