www.pulsar.pl
DSOP24V
38
7.5. Graphs
The "Graphs" tab allows you to read the history of parameters (current, voltage, resistance in the battery
circuit, and temperature) in the form of graphs stored in the memory of the power supply.
During normal operation, the power supply registers the electrical parameters both at the output and
battery circuits and then stores them in the internal non-volatile memory. The parameters are saved every 5
minutes and the memory capacity allows recording for more than a 100 day period. The oldest log entries are
overwritten cyclically when storage is full.
The power supply unit has a separate space in the internal memory where it records the recorded battery
temperature. The parameters are saved every 6 hours, which allows recording the temperature for a period of 5
years. Thanks to this extended registration period, the user can check the range of temperature changes and
determine its impact on battery life.
The rated operating temperature of the batteries recommended by the majority of
manufacturers is 25°C. Operation at higher temperatures results in significantly reduced battery life in
such a way that the service life is reduced by half for each
sustained temperature rise of 8°C above
the nominal temperature. This means that the batter
y lifespan, when operated at 33°C, can be
decreased by 50%!
The sample graph read from the DSO power supply is presented below.
Fig. 39. The view of the "Graph" tab.
To read the power supply event log, set the date range (start and end) from which the data will be
downloaded, and then press the "Download" button. Data reading starts with the latest entries and progress is
displayed in the bar above the graph. The read operation can be aborted at any time by pressing the "Abort"
button.
The graph presents the following parameters:
-
Uaux
- Output voltage
-
Ubat
- Battery voltage
-
Ibat
- Output current drawn from the battery
-
R1
- Resistance of the first battery string
-
R2
- Resistance of the second battery string
The graph window is automatically scaled with respect to the minimum and maximum values in the vertical
axis. In the horizontal axis, use the mouse wheel for manual scaling.