Jackson Labs PHASE STATION 53100A, Руководство пользователя

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PhaseStation 53100A User’s Manual V1.04 25-Apr-2022 125
Symmetricom 5115A / 5120A / 5125A (Frequency stability)
Symmetricom 5115A / 5120A / 5125A (Phase noise)
These digital phase noise analyzers provide advanced features and specifications similar
to the TimePod and PhaseStation instruments. However, separate options in the
Acquisition menu must be used to obtain data for xDEV and phase/frequency-difference
plots and the Fourier spectrum used for phase noise plots. Phase/frequency data will be
acquired continuously for the duration of the measurement, while phase noise
acquisition will retrieve a snapshot of the analyzer’s current phase noise trace, noise-
floor estimate, and spur table.
As with other TimeLab acquisition processes, these acquisitions may be launched
concurrently.
Note that the earliest versions of these test sets were developed and marketed by
Timing Solutions Corporation, so they are often referred to as the “TSC 512x” family of
instruments.” Later instruments were produced with Symmetricom and Microsemi
branding. The TimeLab drivers support all of these variations under the Symmetricom
nomenclature.
This acquisition option is also useful for requesting phase noise and AM noise data from
the TSERVE remote access server. See the
Stop/repeat acquisition ( Space )
This context-sensitive command associates the most common acquisition “verbs” with a single
easy-to-remember keyboard shortcut.
• If deferred-acquisition mode is active and at least one acquisition is pending , the Space
bar terminates all active acquisitions (after prompting).
•
Otherwise, if the selected plot is associated with an acquisition in progress, the Space
bar will terminate that acquisition (after prompting).
• If one or more acquisitions is running but the selected plot is not among them, the
Space bar will offer to terminate the acquisition that was most recently started.
• If no acquisitions were running, the Space bar will bring up the most-recently-used
acquisition dialog.
Because TimeLab measurement sessions often involve repeated acquisitions with the
same instrument, the
Space bar shortcut will usually “do what you mean.” It will either
stop collecting data if an acquisition is in progress, or start a new acquisition if data is
not currently being acquired.