Changes

Set lock-in amplifier parameters:

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Select the Lock-in Amplifiers for each channel using the Lock-in Amplifier Selector and set their corresponding parameters.

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Other parameters that should be directly set on SR844 RF lock-in amplifier – since they are not controlled (see Figure 3.13 in section 3.2.2):

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To set translation stage speed settings:

From “Visa COM” serial port drop-down list select the COM port that the X Linear Translation Stage is connected to. A COM port is a specific serial connection on a computer, such as COM3.

Set the speeds of translation stage from “Translation Speed” box (Figure 4.5). The default value is 10 mm/s – indicating that translation stage can move 10 mm per second.

Press “Set Speed” button to save the new settings. The system will respond with confirmation message “Set Speed OK” in information panel.

The Scan Speed is ~ 0.3 mm/s.

When translation stages power up, they need to be homed in order to get an accurate reference position. The home sensor is at the motor end of the stage. Press “Home Position” button.

In order to displace translation stage to a defined position along X-axis, enter the appropriate X coordinate in the X Position Setting Entry Box and then press “Move along X” button as shown in Figure 4.6. Similarly, enter the appropriate Y coordinate in the Y Position Setting Entry Box and then press “Move along Y” button to move to the defined position (see Appendix A-I for more details).

Use “Set Origin” button to define the starting point of the scanning area (Figure. 4.6). See Appendix A-I for more details.

To go to the origin, press “Move to Origin” button.

==== Height Settings Page ====