RUDI PES Power Supply
Research Unit Digital Instrument RUDI-EA2
RUDI-EA2 is a novel, modular high voltage power supply for photoemission and other demanding research applications. The electronics features fully calibrated, independently operating modules utilising the very latest electronics and software technology.
Voltage supplies are controlled by high precision 16-bit digital-to-analog converters with high linearity and extremely high temperature stability. Automatic low and high voltage range settings, as well as output polarity, are under full user control.
The combined high specifiation and system flexibility makes RUDI-EA2 the obvious choice for many analysis applications, where stable, high voltage supplies are required and can also be readily configured by the end user.
Each RUDI-EA2 unit is supplied with a comprehensive serial communication protocol description which can be easily implemented for individual control needs, thus removing the reliance on specific, often prohibitive supplier software.
As the demand for smarter, connected technologies increases, PREVAC provides the best in class electronic solutions. The electronic mainboard of the RUDI-EA2 system is a showcase for the best in active digital and analog electronic components currently on the market.
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Other Features
- Special techniques have been used to achieve rapid temperature stabilization. The system is ready for use after only 3 minutes from switch on.
- Each independent voltage module achieves temperature stability below 0.5 ppm of the voltage span per degree Celsius.
- Using 16bit AD converters, the 6 kV power supplies can be set with a resolution of just 1,6 mV and with a maximum noise level of only 200 µVp-p.
- Each modules can be controlled independently via EIA 485 2 wire interface.
- Each module has a floating output which means a wide range of configurations are possible making the unit truly universal - serial configuration is unlimited.
- Any other voltages up to 6000 V available on request
- High linearity controlled with an accuracy of 16 bits
- Up to 28 modules fit into 9U rack
- Voltage deviation calculated with two-point calibration at min and max voltage
- Maximum non-linearity over the range of 100 V is ~0,2 mV
Technical Data
RUDI PES Power Supply
|
| Maximum number of modules in 9U rack |
28 of all modules chosen from DAC and HV |
| High voltage modules |
Different version up to 6 kV, bipolar, floating output |
| DAC modules |
High precision 16 bit +/-12,5 V |
| Insulation |
All HV and DAC modules have full insulation 6 kV to power and ground |
| Temperature stability |
< 0.5 ppm/°C |
| Hardware interface |
MODBUS-TCP 460 Kbit/s |
| Communication protocol |
PREVAC protocol with checksum control. Protocol specification is included |
| External interlock |
Active when the contact is closed |
| Power supply |
110-260 V 50/60 Hz, max. 200 VA, depends on modules number |
| Operating temperature |
+5ºC to +35ºC |
| Rack dimensions |
Rack 9U height, 84Hp width, W x H x D (483 x 395 x 360) mm |
| Weight |
Approx. 18 kg (for ~20 Modules) |
| High Voltage Modules |
| Modules |
Output voltage |
Maximum output current |
| HV 100V |
~0 – 100 V, 16 bit, step size ~1.6 mV |
~600 µA |
| HV 600V |
~0 – 600 V, 16 bit, step size ~9.2 mV |
~300 µA |
| HV 600/100V |
Low range ~0 – 100 V, 16 bit, step size ~1.6 mV
High range ~0 – 600 V, 16 bit, step size ~9.2 mV |
~300 µA |
| HV 1900/100V |
Low range ~0 – 100 V, 16 bit, step size ~1.6 mV
High range ~0 – 1900 V, 16 bit, step size ~23 mV |
~200 µA |
| HV 2200V |
~0 – 2200 V, 16 bit, step size ~34 mV |
~150 µA |
| HV 4000V |
~0 – 4000 V, 16 bit, step size ~61 mV |
~100 µA |
| HV 6000/600V |
Low range ~0 – 600 V, 16 bit, step size ~9.2 mV
High range ~0 – 6000 V, 16 bit, step size ~92 mV |
~100 µA |
| DAC Modules |
| Output voltage |
0… +/- 12.5 V |
| Precision |
16 bit |
| Step size |
200 µV |
| Protection |
Surge protection 23 kV |
Software
Research Unit Digital Instrument RUDI-EA2 Software
The SPECTRIUM 2.0 is based on the novel developments in techniques and signal processing. The user can define the range of voltage (low and high pass) without any manual changes from the level software. The PES and ISS mode can be set from the SPECTRIUM software. The SPECTRIUM consists of a spectrometer control panel for lens mode, energy settings, step time etc. Moreover data acquisition in the 1D, 2D and 3D is included. The SPECTRIUM file format for sequence and region scans can be exported to many formats and the most of the processing software as CASA XPS, IGOR, ORIGIN opens SPECTRIUM files.
Interactive scan control
The SPECTRIUM software design has been optimised for more efficient workflow, resulting in a streamlined and simpler design. The control module is interactive and dynamic allowing adaptation of parameters to customer’s needs.
All scan parameters can be adjusted on-the-fly without delay during scanning, and it is possible to zoom, navigate and paste scanned spectra to the background for reference. Any of the parameters can be displayed in multiple windows. The user has online access to the CCD detector to configurate channels.
Experimental Automation Modules
In most complex measurement Spectrium with RAPID SE offers a fully automatisation of the measurement processes. User can define any configuration for the entire analysis system. The stored data includes all experimental parameters and devices with all logs and notes.
Advanced 2D and 3D spectroscopy
Advanced spectroscopy module allows for experiments at a point, along a one of direction, or a maps mode.
High quality spectra
User can use the SPECTRIUM software for many experimental techniques for any research. It can measure high quality spectra.
Integration with TANGO and other control systems
Requirements
Windows 7/8/10, 64 bits, Intel i5 2.6 Hz or equiv., 8 GB RAM, 500 GB HD, one 21” screen with at least 1280 x 1024 pixels recommended.
