Jackson Labs PHASE STATION 53100A, Руководство пользователя

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PhaseStation 53100A User’s Manual V1.04 25-Apr-2022 22
Performance notes
Measurements made with the 53100A rely on multithreaded signal processing operations that can place
significant performance demands on the host PC. Referring to the benchmarks at
http://www.cpubenchmark.net/common_cpus.html , the minimum PassMark score for reliable
acquisition falls in the 1,600 to 2,000 range. In practice, this means that a 2.0 GHz Intel Core 2 Duo or
faster processor is required. Additional CPU cores are often more helpful than higher clock speeds.
Use of a system with inadequate CPU performance may result in
acquisition errors, often accompanied by a flashing red fault
indication on the 53100A’s status LED.
It may be necessary to
disable one or more measurement types to achieve reliable
operation in such cases.
For example, if you are interested only in
phase/frequency stability measurement, uncheck the
Measure
phase noise and Measure AM noise boxes in the acquisition dialog, as shown at right. By default, the
53100A will measure phase noise, AM noise, and phase/frequency stability simultaneously.
When noise measurements on slower PCs are required, another strategy to improve reliability is to
uncheck the
Overlapped acquisition box in the Additional options page of the acquisition dialog.
Doing so will increase the averaging time required to achieve extremely low noise floors, but will have
little effect on most measurements.
Note that overlapped acquisition is turned off by default
.
For improved performance, a 64-bit version of TimeLab will automatically be installed on x64-based
systems. If you need to record long phase records with the 53100A (or any other equipment supported
by TimeLab), an x64 system with several GB of RAM is recommended.
Figure 1: Available measurement types