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

REPEAT UNTIL Repeat Until
Example
The following program lowers any off-screen signal.
10 OUTPUT 718;"IP;"
20 OUTPUT 718;"SNGLS;TS;MKPK HI;"
30 OUTPUT 718;"IF MA,GT,RL THEN;"
40 OUTPUT 718;"REPEAT;"
50 OUTPUT 718;"RL UP;TS;MKPK HI;"
60 OUTPUT 718;"UNTIL MA,LE,RL;"
70 OUTPUT 718;"ENDIF;"
80 OUTPUT 718."CONTS-" s 3
70 END
Description
Initializes spectrum anal~zfx
Activates single-sweep mode, takes sweep, places
marker on signal peak.
Performs lines 40, 50 and 60 if the marker
amplitude is greater than the reference level.
Increases refwence level, takes sweep, places
marker on signal peak.
Does line 40 until peak amplitude is less than
or equal to the reference level.
Ends the IF THEN constrwt.
All commands following the REPEAT command are executed until the comparison specified
after the UNTIL command is true.
The following are used for comparing the operands:
GT Greater than
I.3 Less than
IJ3 Less than or equal to
GE Greater than or equal to
EQ Equal to
NE Not equal to
When used within a downloadable program (DLP), the number of REPEAT UNTIL statements
that can be nested is limited to 20.
5-464 Programming Commands