Keysight E6680A - Page 145

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
n Return Value
frequency)
8 Not used
9 Returns a trace containing the shape of the FFT window
10 Returns trace data of the phase of the FFT versus frequency
11 Returns comma-separated linear spectrum trace data in Volts RMS
12 Returns comma-separated averaged linear spectrum trace data in Volts RMS
13 Returns the following comma-separated scalar results:
# Item Unit, if any
1 I/Q Magnitude and Phase Delta Results available (0 = not available, 1 =
available)
Results are available when the last measurement was made with I/Q
Magnitude and Phase Delta Results enabled (:SPEC:IQD:ENAB ON)
and the setup was valid for generating the results (invalid setup when
input is I/Q, I/Q Path is I+jQ, and Center Frequency is not 0Hz)
2 Delta magnitude and phase trace (results 14 – 17) start frequency
0 when I/Q Magnitude and Phase Delta Results not available
3 Delta magnitude and phase trace (results 14 – 17) number of points
1 when I/Q Magnitude and Phase Delta Results not available
4 Delta magnitude and phase trace (results 14 – 17) frequency spacing
between points
0 when I/Q Magnitude and Phase Delta Results not available
5 Current average count
1 when I/Q Magnitude and Phase Delta Results not available
6 Frequency of the FFT trace (result 4) peak magnitude
0 when I/Q Magnitude and Phase Delta Results not available
Hz
7 Delta magnitude at the FFT trace peak magnitude frequency
–999 when I/Q Magnitude and Phase Delta Results not available
dB
8 Delta phase at the FFT trace peak magnitude frequency
–999 when I/Q Magnitude and Phase Delta Results not available
radians
9 Delta phase at the FFT trace peak magnitude frequency
–999 when I/Q Magnitude and Phase Delta Results not available or invalid
setup
°
10 Frequency of the averaged FFT trace (result 7) peak magnitude
0 when I/Q Magnitude and Phase Delta Results not available
Hz
11 Averaged delta magnitude at the averaged FFT trace peak magnitude
frequency
–999 when I/Q Magnitude and Phase Delta Results not available
dB
145 IQ Analyzer Mode User's &Programmer's Reference