Tally T6215, Maintenance Manual

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1–3
Chapter 1. Technical Overview
Hammer Drive Module
• resident on shuttle/hammer assembly
• hammer drive ASICs
• hammer drive transistors
• cold drive energy damping diodes
Specifications
Serial/Parallel Emulations
Nine emulations are available on the T6215: MT660, Genicom ANSI, HP2564C,
Printronix P600, Printronix P6000, IBM Proprinter III XL, Epson FX-100+, DEC
LG01, and MTPL.
Font Styles
There are 6 resident type styles available on your printer. They include: Courier,
Data Processing, Draft, Gothic, OCR-A, and OCR-B. All font styles and the two
output modes (Enhanced and Constant Density Fonts for Draft and DP) are se-
lected through the printer control panel.
Courier and Gothic
These two font styles provide near letter quality (NLQ) printing on your printer.
They print at higher dot densities and use denser character matrixes. NLQ type
styles provide greater readability for reports and other text output.
Data Processing and Draft
Data Processing and Draft styles appear in two modes: Constant Density (CDF)
and Enhanced. Constant Density Fonts print at the same dot density regardless of
the CPI. This produces consistent print speed even when changing from one CPI
to another.
Enhanced Mode provides higher resolution and a greater range of CPI’s than CDF
Mode. Because Enhanced Mode uses a variety of dot densities, you should expect
a change in print speed of text when switching from one CPI to another.
OCR-A and OCR-B
These font styles print at 10 CPI only. They are used mainly for Optical Character
Recognition.
Characters Per Inch
The T6215 offers a variety of CPIs for use in printer output, which are dictated by
the font style selected. Each CPI is based on one of twelve character matrixes and
twelve dot densities. Each matrix uses a specific number of dot columns for
character composition and intercharacter gap. CPIs are grouped in any given type
style by the base CPI matrix used for the group. These base CPIs are 10, 12, and
15.