Hi,
The attachment is the control of Signal Generation(E4438C) and Spectrum Analyzer(E4440A), I connect the RF output of Signal Generation to the input of Spectrum Analyzer, and set the parameter in the front panel of program, then run the program, I can get the Peak value and position through Spectrum Analyzer. But the reference level of Spectrum Analyzer can be set higher than 10dbm, when it higher than 10dbm, there is an error "Data out of range; value clipped to lower limit."(see the attachment"ERROR.JPG"). In the program, the attenuation is set to auto by default, so I should can set the reference value to 30dbm, isn't it? The instrument has no problem, I have checked.
