Furthermore, the key devices of the thesis are CDAQ devices which are supported by NI and used to accomplish different tasks such as NI 9239 was used for measuring analog voltage and current, NI 9263 was used to generate output voltage and NI 9212 was used as a thermocouple. After that, a state machine design pattern was chosen for the static measurement.

Before making a program for the static measurement, different types of design patterns have been discussed in this thesis. Therefore, this master thesis addresses to create an automated system for semiconductor test setup using LABVIEW. There are different kinds of software to create an automated system but, among of them LABVIEW have been using for more than 20 years in the automation process. Beside of this, nowadays automation process is also utilized in the electrical measurement system. It is used to reduce human involvement in the fabrication operations.

Select Acquire Signals» Analog Input» Temperature» Thermocouple.Automation is getting popular in the semiconductor manufacturing industries.

Select NI-DAQmx Global Virtual Channel and click Next.

With NI MAX open, select Data Neighborhood and click Create New.

A virtual channel is a concept of the NI-DAQmx driver architecture used to represent a collection of device property settings that can include a name, a physical channel, input terminal connections, the type of measurement or generation, and scaling information. Using a NI-DAQmx Global Virtual Channel, you can configure a thermocouple measurement without any programming. You can use NI MAX to quickly verify the accuracy of your measurement system setup. Refer to Figure 3 for an illustration of a typical shielding configuration.įigure 3. Connecting a Shielded Thermocouple The shield grounding methodology can vary depending on the application. If you are using a floating thermocouple or a thermocouple within ☑.2 V of earth ground, connect COM and the shield to earth ground. A common-mode voltage reference is a voltage that is within ☑.2 V of the common-mode voltage of the thermocouple. If you are using a shielded thermocouple, connect the COM terminal of your device to the shield and the shield to a common-mode voltage reference of the thermocouple.

If you are unsure which of the thermocouple leads is positive and which is negative, check the thermocouple documentation or the thermocouple wire spool. Connect the positive lead of the thermocouple to the TC+ terminal and the negative lead of the thermocouple to the TC– terminal. The connection diagram in Figure 2 indicates which pins on your DAQ device should be wired according to the physical channel you selected. Each thermocouple wire has a positive lead and a negative lead.

Pid temperature control labview vi