Agilent Technologies 54503A User's Guide download pdf (Page 326)

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326 Chapter5

Programming

Creating Screen Titles

Line 30 sends the TITLE command to the analyzer: the #A to specify

that the title is in A-block format; the string length; and the contents of

the string, which is the actual title. The # sign in the USING statement

suppresses any end-of-line characters. The USING statement speciﬁes

that some of the data will be sent as characters (K) and some as a 16-bit

word (W). The character data is the spectrum analyzer command

(TITLE #A) and the title (in A$). The length of the trace (LEN(A$)) is

sent as one 16-bit word that is made up of two 8-bit bytes.

Making a Title in I-Block Format

I-block format, like A-block format, also allows you to use string data as

a title. With I-block, however, you can send a string of indeﬁnite length.

The spectrum analyzer will continue to accept data (up to 32

characters) until an end-or-identify (EOI) signal is sent to the spectrum

analyzer. See Example 4.

XAMPLE 4

10 DIM A$[15]

20 A$="THIS IS A TITLE"

30 OUTPUT 718 USING "#,K";"TITLE#I",A$,END

40 END

This example is much like the previous one. For I-block format, you

must place the title in a string. However, you do not send the title

length. Line 30 sends all character data; thus, the USING statement

speciﬁes K format only. Again, the # sign in the USING statement

suppresses any end-of-line characters. TITLE #I activates the analyzer

TITLE function and speciﬁes that the title is in I-block format. A$

sends the title, and the END statement, which is sent with the last byte

of title data, activates the end-or-identify control line.

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