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HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

HP 8590 E & L Series Spectrum Analyzers and HP 8591C Cable TV ...

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Example<br />

OUTPUT 718;"VARDEF V-AR,O;"<br />

DISP "ENTER THE VALUE OF THE VARIABLE USING<br />

THE ANALYZER KEYS"<br />

OUTPUT 718;"V,AR EP;"<br />

OUTPUT 718;"V,AR?;"<br />

ENTER 718;N<br />

PRINT N<br />

OUTPUT 718;"IP;"<br />

OUTPUT 718."V # - AR'." *,<br />

ENTER 718;N<br />

PRINT N<br />

Description<br />

VARDEF Variable Definition<br />

Lk$nes variable called V-AR <strong>and</strong> assigns<br />

it a value of 0.<br />

The value of VAR is changed by<br />

using the front-panel controls.<br />

Returns entered value of V-AR to the<br />

computer:<br />

LGpluys value on the computer screen.<br />

Initializes analyzer:<br />

The value of V-AR changes to its<br />

initial value afler an I.<br />

The VARDEF comm<strong>and</strong> creates a user-defined variable <strong>and</strong> assigns it a value. User-defined<br />

variables can be used in many of the spectrum-analyzer remote-control processes. Use<br />

user-defined variables wherever “user-defined variable” appears in the syntax diagrams. An<br />

instrument preset (IP) sets user-defined variables to their initial value (see example).<br />

An error results if a variable name is the same as any reserved word. ‘Ihble 5-2 lists reserved<br />

words.<br />

User-defined variables occupy spectrum analyzer memory. Use the DISPOSE comm<strong>and</strong> to clear<br />

user-defined variables from memory.<br />

Programming Comm<strong>and</strong>s 5.583

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