LaplaceDLTS System

Downloads

The software runs only with appropriate license hardware key installed (obtained from contact persons on commercial basis). For those who want to test performance of the software it is possible to obtain a test run license key active for 12 months. Handling fee applies.

Full installation/upgrade/repair (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/TransientProc33_v3340_27 NULL.11 NULL.2017 NULL.exe), version 3.3.40 (date: 27-11-2017), a password for running downloaded set-up file is required.

Basic hardware configuration (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/BoontonConnection NULL.pdf) with Boonton Capacitance meter and NI-DAQ card for capacitance transients acquisition
(do not forget to switch computing mode to ‘Capacitance Transients’)

Basic hardware configuration (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/CurrentTransientsConnection NULL.pdf) with Keithley 428 Current Amplifier and NI-DAQ card for current transients acquisition
(do not forget to switch computing mode to ‘Current Transients’)

Lock-in system (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/LockinCapacitanceMeasuringSystem NULL.pdf) used as a capacitance meter, general idea

Description of NI_DAQ signals and timing (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/Description_of_output_signals_of_NIDAQ_card NULL.pdf)

Description of wiring (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/NI6251_signals2 NULL.pdf) (starting from version 3.3.0) for connector boxes (screw-terminal or BNC) used with the NI DAQ cards.

Description of Boxcar and lock in algorithms in DLTS measurements (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/DLTS_simulation_Boxcar_vs_lock-in NULL.pdf) using LaplaceDLTS software, provided by Prof. Abdelmadjid Mesli

Manual (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/Common/Laplace_manual NULL.pdf) version 3.3 (date: 27-11-2008), the same as the Program Help. (http://www NULL.laplacedlts NULL.eu/help)

Installation Instructions

NB! Version 3.3.38 has been tested under Windows10 64bit. Works as expected. The only thing one should do after successful installation and before program is run is to manually register one of the older libraries.
Please open the command prompt window and issue the following command:
regsvr32 %Systemroot%\SysWOW64\comdlg32.ocx

NB! The software will not run on computer with processor older than Pentium5. It may change with version of NI drivers as they are the most demanding part of the system. So if you can run NI-MAX utility available after installing NI drivers then you should be able to run the LaplaceDLTS System as well.

NB! If you happen to have version 3.3.2 or earlier installed, a full installation from downloaded set-up is necessary, i.e. you have to install the software into a new directory, then copy existing user configurations from old configuration files (*.ini).

The first step is always installing current drivers for the hardware. You are advised to do so always, both in case of upgrades of LaplaceDLTS and also and when installing for the first time. It is VERY important as the LaplaceDLTS software will fail to talk to the hardware if installed before proper drivers are registered into the Windows. You can download NI drivers from NI.COM site or from our ftp site (links below). Install GPIB drivers, VISA (NI version) and NI DAQ card drivers called NIDAQmx. We recommend using NI GPIB card and drivers as some other ones proved not to be fully compatible with NI VISA drivers, sometimes.

You have to run an installer whether you are installing for the first time or just upgrading to the current version. The installer you downloaded will recognize the mode by itself and act accordingly. In case of the first installation, or after totally deinstalling the previous version, the installer will ask you for a password, which has been sent to you by mail.

Please install the Laplace system into directory of your choice which is NOT in the system paths, i.e. .Windows, .Program files or .Documents and settings. After running the installer you can choose the default configuration or request a custom one. In this mode you can change the installation path (which defaults to C:\Laplace Transient Processor) and software components to be installed. This mode is useful when installing only the ExpDBase program on computers other than the one which is used for measurements and calculations.

Please configure Windows so it will not enter sleep mode after some time of inactivity (lack of user interaction). Windows do not consider any user software running as user activity so it will suspend the Laplace even during long measurements. What’s worse the program will fail to communicate with measurement hardware after wakeup.

NI GPIB Driver (IEEE 488.2) (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/NI_Drivers/ni4882_302 NULL.exe), version 3.2

NI VISA Driver (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/NI_Drivers/visa512full NULL.exe), version 5.1.2

NI DAQ Driver (NIDAQmx) (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/NI_Drivers/NIDAQ951f1 NULL.exe), version 5.1.1

Version History

Warning!

Starting from version 3.3.12 there may be a problem when connecting Boonton capacitance meter during hardware initialization. After the DAQ card is initialized the program hangs. This happens only when HP/Agilent GPIB controller is used and due to incompatibility between NI and Agilent VISA implementations. The work-around is as follows: wait approximately three minutes and the program will continue. This delay happens only once, at the initialization step, normal measurement operations are not affected.

As far as we know there is only one LaplaceDLTS installation reporting the issue (one of ours).

Warning!

Starting from version 3.3.26: we’ve got two signals that in some cases the system installed on Widows7 64-bit machine does not work. After selecting one of user configurations on the initial screen and pressing the continuation button there is a message announcing run-time error “Run time error ‘429’ | Active X component can’t create object”. However on several other machines running the same Windows version there is no problem. We’ve also haven’t got any reports of such an error on Windows7 32-bit machines.

If you experience such a strange behaviour it is probably due to lack or not properly installed NI drivers. Keep in mind, as stated in another place, that NI drivers HAVE TO be installed before LaplaceDLTS installation.
This issue has been already solved, starting from 3.3.27!

v. 3.3.39-40 November 2017
Support for temperature controller AME tc-2091 added.
Conventional DLTS dialog allows for temperature rate to be changed while measuring. Additional temperature monitor window
is added to diplay temperature changes.
Error in USB dongle library fixed (this applies to both LaplaceDLTS and ExperimentDBase programs).
Some minor user interface changes, adjustments and fixes.

v. 3.3.38 May 2016
Temperature controllers now can use internal ZONE mode or PID mode. It is possible to use direct PID/heater settings as well, as before.
Support for using lock-in as a capacitance meter added. A general lock-in may be used with all-manual control. There is built-in support
for HF2LI digital lock-in from Zurich Instrument. Other models will follow.

v. 3.3.33 April 2015
Capacitance vs Temperature (CT) module fixes and improvements.

v. 3.3.32 April 2015

Fixes to IV files handling for reverse (DOWN) measurements.
The same fixes applied to Experiment Database program.
Parameter ‘End voltage’ added to IV and CV database formats (to present data
already present in corresponding disc files).
Additional parameters added to user configuration files used to limit effective range of
voltages applied to the sample (reverse and forward). This is user setting that is independent
of hardware used and is used to limit voltages displayed and set through measurement dialogs
slider controls. It is stored in user configuration file, so every user can set it separately and
may have several different settings as well.

v. 3.3.31 April 2015
Improvements to user configurations handling.

v. 3.3.30 March 2015
Capacitance vs Temperature (CT) module brought back to service!
Additional methods and enhancements to ExpDBase server (now v.1.50).

v. 3.3.29 January 2015
Extended expiry date range in HASP module.

v. 3.3.27 November 2014
A lot of minor changes, fixes and amendments in CV, conventional DLTS and LaplaceDLTS
modes, including:
– DLTS TrapView and Multiexponential modes fixed; now they start every time in both
temperature directions
– CV module enhanced
– current transient mode in conventional DLTS added, similar to the one in Laplace mode
– additional features of Keithley 428 current amplifier can now be controlled from within
the program
Errors in hardware configuration module fixed (restoring sync configuration) and another
signal source replacing capacitance meter added; may be used when measuring current
transients instead of “dummy” 72B Boonton (no computer control of the source)
Error inhibiting LaplaceDLTS main program use when NI drivers are not installed fixed.

v. 3.3.26 December 2013
A new version of database program is now included. It does not affect existing LaplaceDLTS installations.
Both database template and default databases supplied are now in Access2k format (instead of Access97) as well.
1. Errors when accessing new databases created from (empty) template utilizing Access2k database format are fixed.
2. Some modifications to CV module:
* It is enough to initialize hardware once. It stays valid after closing and re-opening the window,
* Initialization is cancelled after global hardware reinitialization and/or after choosing another CV hardware,
* Diagrams and data are retained in process of closing and reopening the window; it is discarded on hardware change or reinitialization.

v. 3.3.25 May 2013
All Keithley SMUs 26xx A/B may now be used with IV module, not only the 2601A. However only the first
channel will be used and within ranges 40V/3A, like for the original 2601A device.

v. 3.3.24 January 2013
Support for LakeShore 336 added.

v. 3.3.21 June 2012
Added support for LakeShore 335 temperature controller.
New WireTest program.

v. 3.3.20 May 2012
Added support for sync impulse length control (used e.g. to drive excitation lasers/LEDs).
Some minor bugs fixed.

v. 3.3.14 October 2011
Agilent E4980A LRC Meter support added.

v. 3.3.13 September 2011
Keithley 6487 Picoammeter/Voltage Source support added.

v. 3.3.12 September 2011
Scientific Instruments 9700 Temperature Controller support added.

v. 3.3.11 February 2011-August 2011
Automatic NI card recognition and max. parameter load/application introduced. The following NI DAQ cards are now
supported: PCI6251, PCIe6251, PXI6251, PCI6259, PXI6259, PCIe6351, PCIe6353, PCIe6361, PXI6361, PCIe6363 and PXI6363.
CT measurements temporarily disabled.
A lot of errors fixed or plumbed.

v. 3.3.8 January 2011
New instrument added for I(V) measurements: Keithley 2601A. Some improvements and fixes to IV measurements
form (e.g. initialization parameters are now retained between runs).

Transient Processing Utility

Transient Processing Utility is a new program (TPU in short) to be used to process exponential transients obtained from any source. The program processes data taken from ASCII (not Unicode!) text files using set of numerical routines, the same as used by the LaplaceDLTS System. The data files have to conform to LDLTS standard (described in LDLTS manual and in TPU built-in help). Output of numerical processing is presented as a graph and a set of parameters. Computed spectra may be stored in ASCII text files conforming to LDLTS standard.

One can easily manipulate computing parameters, select numerical routines to be used and range of transient points to be processed.

This utility is intended to be used to process experimental data obtained from sources other than LaplaceDLTS System but showing the same exponential behavior.

The program can utilize a standard LDLTS database so it is possible to compute spectra for measurements already stored in the database. Newly computed spectra of existing transients may be inserted into the database in proper relation to transients.

Simple database editing such as modifying, adding and deleting Material and Sample entries, deleting and adding transient (Measurement) and spectrum (Result) files is possible.

The program is protected by hardware license key, the same kind as Laplace DLTS System. The dongle contains two different licenses meaning that each program checks internal key registry to check if it is allowed to run. Owners of the LDLTS System needing to use the new program on the same computer are provided with the one-time utility which burns appropriate license into existing USB dongle.

The program is available on commercial basis. Please contact us for pricing as well as in any other case.


Some screenshots:

Diagrams

Picture 1 of 3

Source transient and resulting spectra diagrams

Download

Full installation/upgrade/repair (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/TPU_Install_v113_13 NULL.04 NULL.2018 NULL.exe), version 1.13.00 (date: 13-04-2018), a password for running downloaded set-up file is required.

Installation of Sentinel HASP drivers (ftp://gateway NULL.ifpan NULL.edu NULL.pl/pub/Laplace/LaplaceXP/TransProc/HASPUserSetup NULL.exe)