User Manual
The „actual log row“ has only informative character.
Note: depending on the adjustable log interval, logged values will have a certain skew to the
values that are displayed on the device or to those which can be measured at the device‘s out-
put. Example: the device is dynamically loaded with different currents and by logging the current
progression shall be recorded. At time x the device had the actual current of 2.52A, which was
increased to 3A only 30ms later. If the logged data of the current analysed later on and the log
interval would have been set to the minimum of 500ms, the actual current value of 3A would only
occur 500ms later in the next row of the log le. In case the current would have been increased
even higher within that time, the actual value of 3A would never appear in the log le for subse-
quent analysis. Thus logging is only practical for less dynamic operations.
5.1.1 Details about the log le
If log le and log interval have been selected in the options, data logging from your PS 2000 B
device can be started at any time in the Sequencing/Logging window.
If you want to view/analyse logged data, use the button „View log le“ in the window „Sequencing/
Logging“ after logging has been stopped. The assigned application for CSV les is then opened.
In case none is dened on your system, Windows Notepad will also do, because CSV les are
text les. But it is strongly recommended to install a software like MS Excel or OpenOfce Calc.
The log le is created like this:
Uset Uactual Iset Iactual Output Device mode Error Date Time
0,00 1,85 3,00 0,02 ON CV No error 15.12.2010 00:00:00,10
0,00 1,85 3,00 0,02 ON CV No error 15.12.2010 00:00:00,20
0,00 1,85 3,00 0,02 ON CV No error 15.12.2010 00:00:00,30
The rst row is only a header, captioning the columns. In a text editor like Notepad, the columns
will be seperated by semicolons.
Uset - Last set value for output voltage
1
Uactual - Last read actual value of output voltage
Iset - Last set value for output current
1
Iactual - Last read actual value of output current
Output - Output condition
Device mode - Control mode of the unit (CV = Constant Voltage, CC = Constant Current)
Error - Errors, that may have occured during logging:
(OV = Overvoltage, OC = Overcurrent, OT = Overtemperature)
Date / Time - Date of the log le entry creation and running time since logging start
1
The value is always read from the device, no matter what was set in the control GUI at last