This command should be entered in all capitals with only one space between ECHO and the $. Please refer to you DOS manual for instructions on creating DOS batch files.
Programs such as Word Perfect and WordStar typically send a printer initialization string before any data. The port select sequence may also be embedded in this string to select a printer. For example, Word Perfect allows you to edit the printer definition file for a specific printer by using the PTR command. The port select sequence for the Model 24SII DES would typically be inserted prior to any escape codes for the printer. Please see the documentation for your application package(s) for more information on editing printer initialization strings.
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If you have a HP 3000 mini computer, you should contact a BayTech sales representative to order option #26. When the HP 3000 sends an HP LaserJet inquiry command, the Model 24SII DES will then respond with the required ASCII 0 (30 hex).
This option is compatible with all other computer systems.