The main purpose of this thesis was to examine the communication problems with the DLTS set up in the Division for Electricity at Ångström Laboratory in Uppsala, Sweden, and to make the DLTS software complete. The set up consisted of a C/V meter, a pulse generator, a temperature controller and a PC with a control program written in LabVIEW. It was found that the software had been constructed to fit another set of instruments than the set up currently used at Ångström Laboratory. The task was therefore to properly integrate the correct control commands of those instruments into the software. / DLTS investigation of wide bandgap materials / Diamond electronics