23
Rev. 0
1 multimeter in Figure 23 shows the context menu for
unit selection.
The Charge, Energy, Time multimeters include a calcu-
lated mean power display. This value is calculated by the
GUI using Energy E1 and Time Base TB1 from the device
and equals E1/TB1.
PLOTS/DATA COLLECTION
The GUI provides several plots of collected data. There is
a plot for slow channel non-accumulated measurements
such as current, voltage, power and temperature. Another
plot is for accumulated charge. There is also a plot for
energy over time and a plot for fast channel measure-
ments. These plots will collect data whenever the device
is in continuous measurement mode and measurement
results are read from the device either by a manual read
(e.g., Update All Registers or read via the register map)
or by the Registers Auto Read function.
The basic steps to start data collection in Register Auto
Read mode are:
• Set continuous conversion.
• Enable Register Auto Read.
• Optional: clear device’s accumulators, trackers and
GUI’s plots to have a clean start for data acquisition.
The order of those steps does not matter. Any time
Continuous and Auto Register Read are activated, data
collection is performed automatically.
By default, the plots do not show all available inputs/chan-
nels. Some channels are hidden but may be enabled via
the plot’s context menu, which can be shown by right
mouse clicking in the plot area. The sub-menu Channels
will list all available data inputs, see Figure 24 as an exam-
ple for the fast and slow channel plots.
The plot context menu’s functions are:
1. Clear All plot data.
2. Zoom.
3. Zoom All Plots.
4. Export plot data to Clipboard as CSV (Comma-
separated values).
5. Export plot data to File in CSV format.
Figure 24. GUI: Plot Window’s Context Menu, Select Channels
LTC2949 WINDOWS GUI USAGE
