CHAPTER 3 — CHARACTER CODE TRANSLATION

Page 3-3

Twinax Translation

Because all twinax-generated data is in EBCDIC SCS format, the user should select one of the EBCDIC tables (EBCDIC->ASCII,

EBCDIC->EBCDIC, EBCDIC->HP LJ, EBCDIC->PC, EBCDIC->PS), depending upon the printer. Choose 275 E->Aonly if the twinax mode is Xerox 275 emulation mode, and if the Xerox printer is configured for the ASCII character set. Most users operate their printers in ASCII mode, so EBCDIC->ASCIIis the default.

When the data source is a twinax device, unprintable characters (00h - 3Fh in EBCDIC) are removed from the data stream before the data is translated with the translation tables. Any value of 0 is printed as the graphic error action character (“-” by default). Thus, the first four rows of each table usually need to be modified only for alternate host input.

Alternate Host Translation

When using an alternate host, the only function that the OPTIMA performs is to send the data through a translation table. Although the translation tables can translate both printable (40h - FFh in EBCDIC) and unprintable characters (00h - 3Fh), the user will usually need to translate only printable characters.

5250 OPTIMA Translation

Since all OPTIMA-generated data is in ASCII, the table selected for OPT XLAT: should be either ASCII to ASCII or ASCII to EBCDIC, depending upon the printer.

Reading Translation Tables

The left column of each table is a series of numerals and letters representing the most significant digit of the hexadecimal input character received by the 5250 OPTIMA. The top row of each table is a series of numerals and letters representing the least significant digit of the hexadecimal input character received by the 5250 OPTIMA.

The intersection in the table of the most significant and least significant digits of the input character is the location of the output value that the 5250 OPTIMA sends to the printer upon receiving a given input character in the data stream.

Page 80
Image 80
Agilent Technologies 5250 Reading Translation Tables, Twinax Translation, Alternate Host Translation, Optima Translation