C d 39 – Genicom EasyCoder 3400e User Manual

Page 116

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Glossary

C d 39

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104

EasyCoder 3400e Bar Code Label Printer User’s Manual

point size

A unit of measure for font height; 72 points equals 1 inch as measured
from slightly above the top of the uppercase letters to slightly below the
bottom of the lowercase descenders.

Polling Mode D protocol

Polling Mode D is a protocol that allows devices and controllers to
exchange data in an “ask and receive” format. Use Polling Mode D to
connect multiple devices to a single multiport controller.

print speed

Measured in inches per second (ips), the rate at which media travels past
the printhead.

printhead

The mechanism inside the printer that prints. For example, the printhead
for the 3440 printer consists of 1792 thermal elements.

printhead elements

The parts of the printhead that print by placing a mark on the label when
heated. Each element is switched on and off separately in order to react
with the media or thermal transfer ribbon to create a mark on the label.

ready

The state in which the printer is able to print; the normal operating state
of the printer.

Ready/Busy line

Pin 11/20 of the rear panel connector. Indicates the printer is ready or not
ready.

RS-232

Widely recognized protocol standard for serial binary data interchange.
The standard covers the physical, electrical, and functional characteristics
of the interface.

RS-422

Standard for the voltage and impedance levels for serial data transmission
on balanced lines. Similar to RS-232, but handles larger distances and
faster communication.

RS-485

Standard for allowing multiple devices to share a common set of serial data
communication lines. The signaling is very similar to RS-422. The
maximum number of devices allowed is 32.

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