I am a first time user of the E4443A and GPIB programming. When performing a spectrum measurement with a 750.123MHz input signal the result string is +7.5012300000000000E+00. How do I scale the output string? I will be making various measuements of my device from 40MHz to 1200MHz so I would like a proper technique.
thanks, Bob Morgan
Here is my command string:
E4443A instrument catalog "SA,PNOISE
E4443A ID Agilent Technologies, E4443A, MY44300377, A.09.1
E4443A instrument selection S
E4443A system options "1DS,226,266
E4443A configuration "SANalyzer
GPIB instruction INSTrument:SELect SA
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FREQ:CENT 750.123MHz
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FREQ:SPAN 5MHz
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FEED RF
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:PEAK:THR -70
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:PEAK:EXC 0
No errors from spectrum analyzer instrument A
GPIB instruction :INIT:IMM;*WAI
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:MAX
No errors from spectrum analyzer instrument A
thanks, Bob Morgan
Here is my command string:
E4443A instrument catalog "SA,PNOISE
E4443A ID Agilent Technologies, E4443A, MY44300377, A.09.1
E4443A instrument selection S
E4443A system options "1DS,226,266
E4443A configuration "SANalyzer
GPIB instruction INSTrument:SELect SA
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FREQ:CENT 750.123MHz
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FREQ:SPAN 5MHz
No errors from spectrum analyzer instrument A
GPIB instruction :SENS:FEED RF
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:PEAK:THR -70
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:PEAK:EXC 0
No errors from spectrum analyzer instrument A
GPIB instruction :INIT:IMM;*WAI
No errors from spectrum analyzer instrument A
GPIB instruction :CALC:MARK:MAX
No errors from spectrum analyzer instrument A
The PSA returns single value results according the SCPI standard for how ASCII values should be represented. So, the output string is already in the proper format. The value can read into a remote programming environment as an ASCII value and converted to whatever format desired. We have a programming example posted at http://www.agilent.com/find/sa_programming
Regards -
Relevant Products:#E4443A#