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Chapter 8 273

IBASIC Controller

PROGram Subsystem

Example 8-16 Example BASIC program to download an IBASIC program to

Test Set

10 OUTPUT 714;"PROG:DEL:ALL" !Delete current program

20 OUTPUT 714;"PROG:DEF #257" !Create program, send header

30 OUTPUT 714;"10 FOR J = 1 TO 10" !18 characters + CR + LF

40 OUTPUT 714;"20 DISP J" !9 characters + CR + LF

50 OUTPUT 714;"30 BEEP" !7 characters + CR + LF

60 OUTPUT 714;"40 NEXT J" !9 characters + CR + LF

70 OUTPUT 714;"50 END"!6 characters

80 END

:DEFine? The :DEFine? query command is used to upload an IBASIC

program from the Test Set to an external controller.

The IBASIC program uploaded to the external controller is transferred

as IEEE 488.2 Definite Length Arbitrary Block Response Data. The

following information describes some of the characteristics of the IEEE

488.2 Definite Length Arbitrary Block Response Data type. Refer to the

IEEE Standard 488.2-1987 for detailed information on this data type.

• The data starts with a header which begins with a “#”, followed by a

single non-zero digit in the range 1-9 which specifies the number of

digits in the following count field, followed by a series of digits in the

range of 0-9 which gives the number of data bytes being sent,

followed by the number of data bytes specified by the count field.

Example 8-17 Example

#16<data byte><data byte><data byte><data byte><data byte>

• The transfer is terminated by the transmission, from the Test Set to

the external controller, of the response message terminator (NL &

END message).

— <NL> = new line = ASCII linefeed character.

— <END> = IEEE 488.1 END message.

Example 8-18 Syntax

PROGram[:SELected]:DEFine?

1 2 ... 268 269 270 271 272 273 274 275 276 277 278 ... 328 329

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Agilent Technologies 8935 Series Manual do Utilizador Página 273