3.5.1 TrapView version 4.0

In this mode from the measured transient two values of rate windows are calculated. A pair of the rate windows is chosen by an option button. In the Generator tab one defines the parameters of the pulses, on the Temperature tab the settings for the temperature ramp. When it is done one has to add this measurement to the list by pressing the Add button. Adding the measurement to the list swaps the values of the start and end temperatures. When the list is complete one has to mark on the list the measurements which are going to be executed and press the Start button. The measurements are executed one-by-one from the top to the bottom of the list. When one measurement is completed then the program unmarks this measurement and takes the first one from the top which is marked. If on the list there is no marked measurement the program stops. When a measurement is running one can change, re-order, or add some measurements to the list. A new measurement starts from setting the starting temperature and waiting if the criteria for the temperature stability at this set point are met. These criteria are not very rigorous and if found not adequate then can be changed by editing the entries in the [TemperatureStab] section of the Lap_TV.ini file. This file is in the main program directory. When the program waits for the temperature to stabilise at the starting point one can force it to start despite the stabilisation criteria are still not met. This is done by pressing the Start now button.

 

It is advised to define the file name before the set of measurement starts, as after each measurement is completed both spectra are saved and put into the data base. For example, if there are three measurements on the list and if in the Data name text box the name “test” is set then the subsequent measurements will be given the following names: “testA0” and “testB0” for the first measurement, where the first name corresponds to the spectrum measured with the lower rate window. The next files will get the following names: “testA1”, “testB1”, “testA2”, and “testB2”. These spectra, when saved, can be viewed, gathered into sets, and further analysed using the functions implemented in the DataBase program.

 

When a measurement is running one can inspect the last measured transient and the transient acquisition progress by opening the Transient viewer window by pressing this button. This window can be moved and resized. It is closed by clicking it.

 

In this measurement mode, unlikely to the other two described in the following sections, any change in the generator setting is not passed to the hardware but it is only used for editing purposes of a TrapView measurement. This allows to modify, e.g., the sample bias voltage without affecting the bias in the currently running measurement. Only the setting stored in the TrapView measurement setting are used for configuring the hardware.