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

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OL<br />

Output Learn String<br />

Transmits information to the controller that describes the state of the spectrum analyzer when<br />

the OL comm<strong>and</strong> is executed.<br />

Syntax<br />

Related Comm<strong>and</strong>s: RCLS, SAVES.<br />

Example<br />

10 DIM Learn-String$ [202] Allocates rn-ewmy space for the Learnd3Ping.<br />

20 OUTPUT 718 ; “OL ; ” Asks for first state.<br />

30 ENTER 718 USING ‘I# ,202A”; LEARN-STRINGS Computer receives the irlformation.<br />

40 DISP “CHANGE ANALYZER TO ANOTHER STATE,<br />

THEN CONTINUE TO RESTORE FIRST STATE;”<br />

50 PAUSE<br />

60 OUTPUT 718; LEARN-STRING$<br />

70 END<br />

Description<br />

Returns the spectrum analyzer to its former<br />

state (when OL was first activated<br />

in line 20).<br />

The information received from the spectrum analyzer is called the learn string. The learn string<br />

can be sent from the controller back to the spectrum analyzer to restore the spectrum analyzer<br />

to its original state.<br />

The learn string requires 202 bytes of storage space. See “Saving <strong>and</strong> Recalling Instrument<br />

States, n in Chapter 3 for more information.<br />

To restore the spectrum analyzer to the learn string state, you must return the learn string to<br />

the spectrum analyzer. The learn string contains information to tell the spectrum analyzer that<br />

it is learn string data. (Also see “RCLS” <strong>and</strong> “SAVES.“)<br />

5-380 Programming Comm<strong>and</strong>s

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