Agilent Technologies 8935 Series Uživatelský manuál stáhnout pdf (Strana 252)

252 Chapter 8

O:\Manuals\E6380A_Progguid\Book\Ibasic.fm

IBASIC Controller

Method #2. Developing Programs on the Test Set Using the IBASIC EDIT Mode

Entering and Exiting the IBASIC EDIT Mode

To enter the IBASIC EDIT Mode first position the cursor on the IBASIC

Command Line field, type the word EDIT on the terminal or PC

connected to the Test Set and then press the ENTER key on the

terminal or PC. At this point the Test Set will fill the PC screen with 22

lines of IBASIC code from the program currently in the Test Set’s RAM

memory. No program lines will be displayed on the Test Set screen. If no

program is currently in the Test Set’s memory, the number 10 will be

displayed on the terminal or PC screen. This represents program line

number 10 and is displayed to allow you to begin writing an IBASIC

program beginning at line number 10. The “*” annunciator will be

displayed in the upper, right corner of the Test Set indicating that the

IBASIC controller is running to support the full screen edit mode.

After editing is complete, exit the IBASIC EDIT Mode by pressing the

terminal or PC’s ESCAPE key twice or pressing the SHIFT CANCEL

keys on the Test Set.

A variety of editing commands are supported by the IBASIC EDIT

Mode. These commands are activated in the Test Set as escape code

sequences. Most terminals and PC terminal emulator programs allow

function keys to be configured with user defined escape code sequences

and user defined labels for the keys. An escape command (when

received by a peripheral device like a printer or the Test Set) causes the

peripheral to recognize subsequent ASCII characters differently. In the

case of the Test Set, escape sequences are used for executing IBASIC

EDIT Mode editing commands.

For example, ESCAPE [L causes the Test Set to insert a new line

number where the cursor is positioned. Table 8-3 on page 254 lists the

editing escape codes for the Test Set. There is no escape code for

DELETE CHARACTER. Use the Backspace key for deleting. Use the

arrow keys to position the cursor.

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Agilent Technologies 8935 Series Uživatelský manuál Strana 252