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66 Chapter 3

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

HP-IB Command Guidelines

Guidelines for Operation

Using Quotes for String Entries

Quotation marks ’ and " are used to select a non-numeric field setting.

The value is entered into the command line as a quoted alphanumeric

string.

Quotes are used with all Underlined (toggling) and One-of-many (menu

choice) fields.

For example, to set the RF Generator’s Output Port field to Dupl

(duplex), the Dupl would be entered into the command string.

Example 3-2 Example

RFG:OUTP ’Dupl’

RFG:OUTP "Dupl"

Using Spaces

When changing a field’s setting, a space must always precede the

setting value in the command string, regardless of the field type

(command<space>value).

Example 3-3 Example

RFG:FREQ<space>850MHZ

RFG:ATT<space>’OFF’

Using Colons to Separate Commands

The HP-IB command syntax is structured using a control hierarchy

that is analogous to manual operation.

The control hierarchy for making a manual instrument setting using

the front-panel controls is as follows: first the screen is accessed, then

the desired field is selected, then the appropriate setting is made.

HP-IB commands use the same hierarchy. The colon (:) is used to

separate the different levels of the command hierarchy.

For example, to set the AF Analyzer input gain to 40 dB, the following

command syntax would be used:

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Agilent Technologies 8935 Series Bedienungsanleitung Seite 66