Plotter Tab¶

The Plotter is one of the powerful time-domain measurement tools as introduced in Unique Set of Analysis Tools and is available on all SHFLI instruments.

Features¶

Plotting of all streamed data, e.g. demodulator data, auxiliary inputs, auxiliary outputs, etc.
Vertical axis grouping for flexible axis scaling
Polar and Cartesian data format
Histogram and Math functionality for data analysis
4 cursors for data analysis
Support for Input Scaling and Input Units

Description¶

The Plotter serves as graphical display for time domain data in a roll mode, i.e. continuously without triggering. Whenever the tab is closed or an additional one of the same type is needed, clicking the following icon will open a new instance of the tab.

The Plotter tab (see Figure 1) is divided into a display section on the left and a configuration section on the right.

The Plotter can be used to monitor the evolution of demodulated data and other streamed data continuously over time. Just as in the numeric tab any continuously streamed quantity can be displayed, for instance R, Θ, X, Y, frequency, and others. New signals can be added by either using the presets in the Control sub-tab or by going through the tree and selecting the signals of interest in the tree structure. The vertical and horizontal axis can be displayed in Lin, Log or dB scale. The Plotter display can be zoomed in and out with the magnifier symbols, or through Man (Manual), Auto (Automatic) and FS (Full Scale) button settings (see also Plot Functionality. The maximum duration data is kept in the memory can be defined through the window length parameter in the Settings sub-tab. The window length also determines the file size for the Record Data functionality.

Note

Setting the window length to large values when operating at high sampling rates can lead to memory problems at the computer hosting the data server.

The sampling rate of the demodulator data is determined by the Rate value in Sa/s set in the Lock-in tab . The Plotter data can be continuously saved to disk by clicking the record button in the Config tab which will be indicated by a green Recording (REC) LED in the status bar. See Saving and Loading Data for more information on data saving.

Functional Elements¶

Table 2: Plotter tab: Control sub-tab
Control/Tool	Option/Range	Description
Run/Stop		Start and stop continuous data plotting (roll mode)
Select a Preset		Select a pre-defined group signals. A signal group is defined by a common unit and signal type. They should have the same scaling behavior as they share a y-axis. Split a group if the signals have different scaling properties.
	Enabled Demods R	Selects the amplitude of all enabled demodulators.
	Enabled Demods Cartesian	Selects X and Y of all enabled demodulators.
	Enabled Demods Polar	Selects amplitude and phase of all enabled demodulators.
	Unpopulated	Shows no signals.
	Manual	Selects the signals as defined in the tree sub-tab.

For the Vertical Axis Groups, please see the table "Vertical Axis Groups description" in the section called "Vertical Axis Groups".

For the Math sub-tab please see the table "Plot math description" in the section called "Cursors and Math".