IBM QMS 4525 - Manual (Page 156)

DTR/DSR
QMS 4525 Print System User's Guide G-6
DTR/DSR
Data Terminal Ready/Data Set Ready. DTR/DSR is a hardware-controlled
protocol. It controls the flow of data via signals on the DTR line, as opposed
to XON/XOFF protocol, which is software controlled.
Emulation
The ability of the printer to respond correctly to commands that are intended
for a different type of printer. For example, when the printer is set for HP
PCL emulation, it responds to the same commands (PCL) that Hewlett-
Packard LaserJet printers do.
Emulation Sensing Processor Technology
See ESP.
Engine
The part of a printer where the paper or transparencies are physically
processed and printed. It is the body and internal components that house
the controller.
Enter/Continue Key
When the printer is on line and idle, this key continues the current print job
after a paper jam or engine error is cleared. When the printer is off line, this
key works as an enter key when selecting configuration options or when
entering data in the configuration menus. Also, pressing this key when a
menu is displayed enters that menu.
ESP
Emulation Sensing Processor. ESP technology uses a form of artificial
intelligence to analyze incoming file data from any of the printer's interfaces.
ESP technology, which works with most popular commercially available
applications, selects the appropriate printer language from those installed
on the printer and processes the print job, freeing the user from the need
to change printer switch settings or send software commands to
accommodate different printer languages.
Escape Character
A special character (Hex 1B, Decimal 27) used to identify a printer
command. It is usually not a printable character; instead, it is used as a
preface for printer command codes.
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