Agilent Technologies Infiniium 8000A, Programmer'S Reference Manual

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11-10
Common Commands
*LRN? (Learn)
*LRN? (Learn)
Query *LRN?
The *LRN? query returns a string that contains the oscilloscope's current setup.
You can store the oscilloscope's setup and send it back to the oscilloscope at a
later time. This setup string should be sent to the oscilloscope just as it is. It
works because of its embedded ":SYSTem:SETup" header.
Returned Format
:SYSTem:SETup <setup><NL>
<setup>
This is a definite-length, arbitrary block response specifying the current
oscilloscope setup. The block size is subject to change with different firmware
revisions.
Example This example sets the oscilloscope’s address and asks for the learn string, then
determines the string length according to the IEEE 488.2 block specification.
It then reads the string and the last EOF character.
10 ! Set up the oscilloscope’s address and
20 ! ask for the learn string...
30 ASSIGN @Scope TO 707
40 OUTPUT @Scope:"*LRN?"
50 !
60 ! Search for the # sign.
70 !
80 Find_pound_sign: !
90 ENTER @Scope USING "#,A";Thischar$
100 IF Thischar$<>"#" THEN Find_pound_sign
110 !
120 ! Determine the string length according
130 ! to the IEEE 488.2 # block spec.
140 ! Read the string then the last EOF char.
150 !
160 ENTER @Scope USING "#,D";Digit_count
170 ENTER @Scope USING
"#,"&VAL$(Digit_count)&"D";Stringlength
180 ALLOCATE Learn_string$[Strin1]
190 ENTER @Scope USING "-K";Learn_string$
200 OUTPUT 707;":syst:err?"
210 ENTER 707;Errornum
220 PRINT "Error Status=";Errornum