Getting Started with the Switch Card
Electrical connections to the switch card:
- Plug in the source measurement unit (SMU), LCR meter (LCR) and ammeter (AM) according to the figure below.
- Plug in the USB connector. The switch card should power up automatically.
Manual controls of the switch card:
- The LED display should show '---' which indicates that all channels are shorted to GND.
- The two central control sticks allow to change the open channel. The default visualisation mode is the octal numeral system, i.e. the channel numbering runs from '000' to '777'. See figure below.
First tests of the card:
- To test the functionality of all the MUXes, you can measure the capacitance at 0V. This can be done anywhere, e.g. on a table.
- The result should be a step like structure with 3 periods of 8, similar to the figure below.
Mechanical Integration
Integration with the mounting frame:
- The pogo pins require quite some weight to be fully compressed. The pressure should be uniformly distributed throughout the sensor area. A mechanical frame with an array of (electrically isolating) standoffs is used for this.
- Mount the probe card on the frame. Make sure the number of standoffs is sufficient and they are uniformly distributed.
- Mount the switch card.
- Mount the system to the platen of your probe station.
Getting Started with the Probe Card
Electrical connections to the probe card:
- Plug in a manual manipulator to the LEMO connector on the back of the probecard.
- Bring the HV to the chuck. You can use the screw terminal on the HV area of the probe card (rear left on the bottom side). You can also solder a triax connector to this region if required.