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README
The Probe Station is an instrumentation system used to test silicon sensors, it is essentially an electronic setup with precise accessories that make it easier to use. One of its functions is to apply an electric field that polarizes the sensor. It also creates a vacuum to hold the sensor under test.
The following list has some instructions about the drivers installation for the instrumentation used, connection procedure and implemented hardware in the probe station. There is also important information concerning the correct use and manipulation of the Probe Station. In case of error or malfunction, you can find a troubleshooting list with every problem we have faced. The PCIe-GPIB card instalation is named too to do find out that it is correctly installed.
Follow these steps to ensure a correct measurement: Here
The LabVIEW version is the 2020 one, but not all drivers are available for that version. In that case, the optimal controller version is the latest one before 2020. The instruments set consist of:
- KEITHLEY 6487 PICOAMMETER/VOLTAGE SOURCE (NOT USING NOW)
- KEITHLEY 2470 SourceMeter
- KEYSIGHT E4980AL LCR Meter 20Hz-300KHz
- KEITHLEY 6482 DUAL-CHANNEL PICOAMMETER/VOLTAGE SOURCE
Here every driver used for instrumentation.
To control the LabVIEW program, it is important to link correctly every section. There are different cable in our set up:
- IEEE-488 GPIB to connect the instrumentation between them (daisy connection) and the PC (daisy connection).
- Power cable to make the instrumentation and the PC work.
- USB from type A to type B, used to connect the Probe Station to the PC and to power the Probe Station.
- BNC cable from BNC to BNC, used for the connection between the Probe Station and the instrumentation.
Here the steps to follow for a well done connection.
The Probe Station is not only an electronic device, it needs a solid and sturdy structure for the optimal performance and user comfort. Various elements have been added to complete the Probe Station structure.
Here every Probe Station's structural element.
Error 802: Output voltage limited by interlock → Do not enable the LabVIEW program's interlock while the instrumentation's interlock is enabled too (check it)
Error 1135: Parameter 1, Syntax error, expected name parameter → This could happen if you modify the value of the interlock in the LabVIEW program, to solve it you have to select "No value".
Error 1: Disconnect the probe Station power cable (USB) and connect again in the same place. If the error continues and you are doing the IV curve, try changing to IV curve, run it, and then change to CV curve again.
Warning 5074: Output voltage limited by interlock → Disable interlock in the LabVIEW program's main menu.
Warning 5079: Consider using the rear triaxial connectors for better low-current measurements.
This is not an error number, but notice if you are correctly using the front or rear connectors and if it is the same as the program has selected.
- The 82351B is the selected one to allow the PC to communicate with the measurement and test instruments that use GPIB. The instruments used have a GPIB port, so the 82351B card is needed to enable the PC to communicate with them. Specifically, this card converts the computer's PCI Express bus into a GPIB controller.
- There is also an other PCIe card installation needed to make a connection with a local network, with this we can be able to open a remote-window from other computer outside the room so we can control it from outside. For example with the command xfreerdp from linux (with this command, we open a x-widnows and control the Windows PC). The Gigabit TG-3468 is the one selected.
Here are the instructions for a correct instalation.
The IC75 is a Low-power, high-performance 8/16-bit AVR® microcontroller, in order for the Probe Station to work, it needs to be programmed.
Here are the steps to follow to do a correct programming.
A thermalelectric cooler utilizing the Peltier effect is implemented for the probe station. When properly configured, its feedback control system stabilizes the probe station around the desired temperature. Check this document (CERNBOX permission required) for details.