DSOX6MASK datasheet(17/45 Pages) KEYSIGHT

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17 | Keysight | InfiniiVision 6000 X-Series Oscilloscopes - Data Sheet

New Standard for Price Performance: Bandwidth, Visualization, and Integration

Integration (Continued)

Spectrum analysis and Multi-domain analysis:

Enhanced color FFT function with peak search

The enhanced color FFT takes your experience of oscilloscope-

based spectrum analysis to the next level.

– Color grade immediately shows you the frequency and

amplitude distributions of your signal.

– The frequency peak search eliminates tedious cursor

measurements.

– The peak search event lister provides frequency and

amplitude information for up to 11 peaks, sorting them in the

order of the frequency or the amplitude.

– Set frequencies in “start and stop” or “center and span.”

– FFT max hold, min hold, and frequency average plots are also

available through the math functions. Displays up to four

functions simultaneously.

Multi-domain time correlated measurements with

Gated FFT

The new problem solving feature called “gated FFT” lets you

time correlate the analog, digital, and frequency domain to aid in

analysis and debug. When the gated FFT is on, the oscilloscope

goes into zoom mode. The FFT analysis shown in the zoomed

(bottom) window is taken from the period of time indicated by

the zoom box in the main (top) window. Touch and move/flick the

zoom box through the acquisition to investigate how the spectrum

components change over time, correlating the RF phenomenon

with the analog and digital signals.

Figure 37a shows the Gated FFT correlating the turn-on of a PLL

with an associated SPI command and the spectrum contents

at a given time (the boxed area in the top/main window). By

moving the Gated FFT zoom box, you can quickly see the

spectrum contents at another time slot. Note, unlike the scopes

with the RF input, you can actually see the RF signal in the time

domain (channel 4 magenta trace) to quickly grasp its amplitude

information as well.

Figure 37b shows the Gated FFT correlating the FSK frequency

hop from 400 kHz to 3.2 MHz and its related I2C command. Again,

the Gated FFT revealed the relationship of the hopping signal to

the control command (I2C).

Figure 36. Enhanced color FFT with an automatic peak search and FFT

histogram turned on. Min/max hold and average FFT also available.

Figure 37a. Gated FFT time correlating the PLL voltage, SPI command

and spectrum content at a given time span.

Figure 37b. Gated FFT time correlating the FSK frequency hopping with

an I2C command (write 7 at 0x71 data 10).

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