Printronix P7000 Programmer's Reference Manual page 100

Appendix C
TD
TOF
TTL
true
twinax
type family
type size
type style
typeface
typographic font
UPC
USET
VFU
VGL
VT
100
Transmit Data. Serial data stream from the printer for
transmitting status and control information to the
host.
Top Of Form
Transistor-Transistor Logic.
On or 1. "High true" refers to a positive relative
voltage representing the ON state; "low true" refers to
a zero or negative relative voltage representing the
ON state.
Twinaxial cable. An electrical signal conductor
consisting of two wires surrounded by insulation and
a braided shield. Used to connect computers to input
or output devices.
See typeface.
See point.
Refers to either the upright or italic character style in
a specific font family. Roman is upright like this, italic
is slanted like this.
A descriptive name or brand name that identifies a
particular design of type. Also called type family.
See font, proportional.
U
Universal Product Code.
User-defined Set: An IGP command that creates
custom character sets (except OCR fonts) from
existing characters stored in memory.
V
Vertical Format Unit
Code V Graphics Language. An emulation of the
QMS Code V Magnum firmware. The software
version of the old hardware based IGP that is used in
the Printronix PSA line of printers. It provides the
same forms and barcode generation capabilities as
the IGP.
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