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Chapter 1 49
Programming Fundamentals
Putting Multiple Commands on the Same Line
:TRIGger
[:SEQuence]
:EXTernal [1]
:SLOPe
POSitive
Bad Command Good Command
PWR:ATT 40dB POW:ATT 40dB
The short form of POWER is POW, not PWR.
FREQ:STAR 30MHz;MIX:RANG –20dBm FREQ:STAR 30MHz;POW:MIX:RANG
–20dBm
The :MIX:RANG command is in the same :SENSE subsystem as :FREQ, but executing
the :FREQ command puts you back at the :SENSE level. You must specify :POW to
get to the :MIX:RANG command.
FREQ:STAR 30MHz;POW:MIX RANG
–20dBm
FREQ:STAR 30MHz;POW:MIX:RANG
–20dBm
:MIX and :RANG require a colon to separate them.
:POW:ATT 40dB;TRIG:FREQ:STAR
2.3GHz
:POW:ATT 40dB;:FREQ:STAR
2.3GHz
:FREQ:STAR is in the :SENSE subsystem, not the :TRIGGER subsystem.
:POW:ATT?:FREQ:STAR? :POW:ATT?;:FREQ:STAR?
:POW and :FREQ are within the same :SENSE subsystem, but they are two separate
commands, so they should be separated with a semicolon, not a colon.
:POW:ATT -5dB;:FREQ:STAR 10MHz :POW:ATT 5dB;:FREQ:STAR 10MHz
Attenuation cannot be a negative value.