Genicom 3400e Manual De Usuario

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Glossary
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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.