Using Terminal Characteristics

The Terminal Characteristics portion of the ISPF Settings panel allows you to specify values for the following terminal characteristics:

Screen Format 1

Specification of screen format applies to 3278 Model 5 (or 3180 set to a mode that emulates the 3278 Model 5) and 3290 terminals only. ISPF ignores screen format for other types of terminals.

Following are explanations for the terminal types:

Data. Format is based on data width (for 3278 Model 5 only).
Std. Format is always 24 x 80 characters.
Max. Format is always 27 x 132 characters.
Part. Format uses hardware partitions (3279 only).

Note: If you are in an Edit session or you are using the EDIT service, ISPF will not allow you to change the screen format.

Terminal Type 3

You must specify a valid terminal type. If you are using a terminal emulator, select the type that is being emulated (more than likely, a 3278 or 3278x).

Specification of a terminal type allows ISPF to recognize valid characters. The terminal type value that you specify to ISPF might not be the actual terminal type. For example, if your terminal is a 3279, you specify 3278 because a 3279 terminal has the same character set as a 3278. The keyboard character sets for the specified terminal and the actual terminal are always compatible. For specific information about the type value to specify to ISPF for each supported terminal, refer to Help form the ISPF Settings panel.

Interactive System Productivity Facility (ISPF)