Commands Listed in Alphabetical Order
RF:SPECTRogr
am:SLICETIMe? (Query Only)
Returns the time stamp of the selected spectrogram slice (specified using
:RF:SPECTRogram:SLICESELect).
The value represents the number of seconds since spectrogram acquisitionswere
started after the instrument was powered up, or since the spectrogram was cleared
(see RF:SPE
CTRogram).
Group
RF
Syntax
RF:SPECTRogram:SLICETIMe?
Examples
RF:SPECTR:SLICETIME? returns 0.0E+0.
RF:SPECTRogram:STATE
This command switches the frequency domainspectrogramdisplayonoroff.
The spectrogram illustrates how frequency and amplitude change over time.
It is useful for monitoring slowly-changing RF events, and for identifying
low amplitude signals too subtle for the eye to catch in a regular frequency
domain display. The x-axis shows frequency, and the y-axis shows time.
Amplitude is represented by the color of the trace. Cold colors (blue, green)
indicate low amplitude, and hot colors (red, yellow) indicate high amplitude.
When acquisitions are stopped, you can navigate back through each spectrum
slice in the spectrogram by using the RF:SPECTRogram:NUMSLICEs? and
RF:SPECTRogram:SLICESELect commands.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
RF
Syntax
RF:SPECTRogram:STATE {OFF|ON|0|1}
RF:SPECTRogram:STATE?
Related Commands
RF:SPECTRogram:NUMSLICEs?, RF:SPECTRogram:SLICESELect
Examples
RF:SPECTRogram:STATE ON or 1 turns the frequency domain spectrogram
display on.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-585
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