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SCPI Programming Fundamentals
SCPI Language Basics
[:SENSe]:FREQuency:STARt:POWer[:RF]:MIXer:RANGe[:UPPer]
Table 2-1 Examples of Valid and Invalid SCPI Commands
Invalid Command
Val id Command
Problem
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.
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