2. On-site Calibration

2.1. On-site Settings

The On-site settings are enabled by swithing on the On Site Switch.

_images/fts_onsite_settings.jpg

  • Displacement: Change the distance of the rotational mirror to the beam expansion part.

  • Angle: Change the angle of the rotational mirror.

  • Local Host: The IP and port for the local UDP service.

  • Target Host: The IP and port of the remote second pulse generator.

  • Calibration Configuration File: The automatic calibration script.

Note

When Displacement and Angle have the value of NaN, the rotational mirror will stay in the current position.

2.2. Calibration Configuration File

The calibration file holds a list of job setups. Each line is treated as a job. The job paramerters are separated by comma in the following definations:

Date Time, Duration [s], Displacement [mm], Angle [degree]

Below is an example of the configuration file.

2024-11-23 10:20, 10, 10, 10
2024-11-25 15:59, 10, 10, 10
2024-11-25 16:01, 20, 0, 0
2024-11-25 16:03, 30, 10, 30

2.3. Calibration Procedure

2.3.1. Hardware Preparation

  • Connect the hot source and heat it up.

  • Connect the cables of the step motors to the step motor controller’s corresponding DB9 sockets.

    • The DB9 socket in the main FTS part should be connected to X.

    • The DB9 socket of the linear step motor in the beam reflection part should be connected to Y.

    • The DB9 socket of the rotational step motor in the beam reflection part should be connected to Z.

  • Connect the COM port of the step motor controller to the PC’s COM port or use a USB-to-COM cable for transformation.

  • Make sure the step motor controller is in Remote mode.

  • Connect the socket of LE in the main FTS part to the DAQ box.

  • Connect the USB cable of the DAQ box to the PC.

  • Connect the second pulse generator to the PC with network cable.

  • Connect the trigger and pulse cable of the second pulse generator to the DAQ box.

2.3.2. Manual Calibration

The following procedures are used to perform a single calibration manually.

  • Open the application FTS.exe.

  • Select and set SM Controller.

  • Select Reciprocating mode.

  • Set Loop Number.

  • Change Max Pos to adjust spectra resolution.

  • Confirm Linear Encoder Name is valid and with ctr0 selected.

  • Switch on On Site Switch.

  • Change mirror positons by setting Displacement and Angle.

  • Select Trigger Source if you want the job is fired by the second pulse generator.

  • Fill Data File Suffix and Comments on needs.

  • Click Start.

2.3.3. Automatic Calibration

The procedures are generally similar to Manual Calibration but with the Calibration Configuration File being set.

  • Open the application FTS.exe.

  • Select and set SM Controller.

  • Select Reciprocating mode.

  • Change Max Pos to adjust spectra resolution.

  • Confirm Linear Encoder Name is valid and with ctr0 selected.

  • Switch on On Site Switch.

  • Select the Calibration Configuration File.

  • Select Trigger Source.

  • Fill Data File Suffix and Comments on needs.

  • Click Start.

Note

Loop Number is no long valid, since the job is stopped by Duration in the calibration configuration file.