Turning on the equipment:

• A) Switch on the electrical boxes placed on the stage
  
• B) Make sure the Ethernet Hub, NI cDAQ-9184 & Amplifier (Figure ##REF:Fig1##) are powered on.
  When using the old amplifier, please turn it on at least 1 hour before measurement
  

• C) To check if the DAQ Device is connected correctly:
  open NI MAX (Version 17.5.0f0) ⇒ Devices and interfaces ⇒ Network Devices ⇒ right click on cDAQ9184-1B560CB and select the “self-test” option
  - If completed successfully⇒ click on cards NI 9212, NI 9401, NI 9205 to enable them.
  - If not successful⇒ right click on the cDAQ and click on “reserve chassis”
  
• D) Open changeVMchangeA.vi located in D:\Experiment\VIs\Wave Gauges Programs\SubVIs Insert IP Address (192.168.1.3 for smaller linear stage) and remote port (503) and run program
  These values are saved until the electrical boxes are turned off.
  
• E) Move the linear stage (see the detailed instructions on Linear Stage Procedure) so that the middle (in vertical height) of the wave-gauges are positioned in the mean water level.
  
• F) To set this point as 0, open LinearStageMaster.vi located in D:\Experiment\VIs\Linear Stage and insert IP Address of the same linear stage (192.168.1.3), and remote port (503), write “p 0” in the command window and run program.
  

• Sanity check- write “pr p” in command window, run program. Check if the position equals 0 in data out.
  

Establishing gain and offset of the amplifier for each WG:

• A) Turn on the wave-makers and create a corresponding amplitude value of the upcoming experiment
  
• B) Open WG_ScopeSimple.vi located in D:\Experiment\Vis\Scope_Simple , insert 120 [Hz] and 1 [s] for the measurement time and run the program continuously
  
• C) Adjust the offset and gain to obtain significant fluctuations of all WG channels in range of ±10 [V]
  
• D) Shift all curves using offset to fluctuate around 0 [V]
  
• E) Turn off the wave-makers

Calibration Process:

• A) Open WaveGauges_Calibration.vi located in D:\Experiment\VIs\Wave Gauges Programs
  
• B) Check if IP Address (192.168.1.3) and remote port (503) values of the linear stage are correct
  
• C) Set the sampling rate and the measurement time (e.g. 1000 [Hz] & 10 [s]) for each calibration point
  
• D) Set the calibration file name (.calib) and the file path to save the file
  (e.g.D:\Experiment\Flume measurements\CalibrationFiles)
  
• E) Set the number of gauges to calibrate
  
• F) Set the desired Z coordinates [mm] (absolute values) for the calibration (negative values ⇒ linear stage moves up; positive values ⇒ linear stage moves down).
  Increasing order of Z coordinates is preferred (e.g. -25 -20 -15 -10 -5 0 5 10 15 20 25)
  Double-check input values so that no damage is done to the stage, gauges and/or flume
  
• G) Make sure the water is as still as possible in the flume and run program
  
• Check calibration graphs for linear plots that matches the measured calibration points
  
• Check calibration coefficients in *.calib file for at least 2 orders of magnitude difference between 2^nd order coefficient (x²) and 1^st order coefficient (x)

For the Scottish wave gauges (unattached to the linear stage):

• A) Set the middle (in vertical height) of the wave-gauges in the mean water level
  
• B) Open ScottishWGScopeSimple.vi located in D:\Experiment\VIs\Scope_Simple
  
• C) Set the sampling rate [Hz] and the measurement time [s] for each calibration measurement point
  
• D) Make sure the water is as still as possible in the flume and run program
  
• E) Write the value of voltage corresponding to this calibration point, as shown by the indicator
  
• F) Move the wave-gauge up/down to the next calibration point position
  
• G) Re-do steps D) to F) until enough calibration points are measured
  
• H) Open Scottish_WG_Calib.m located in D:\Experiment\Flume measurements\Calibration_Files
  
• I) Type in the values of calibration points voltage from lowest to highest value
  
• J) Run the code

- Check that the number of rows equals the number of wave-gauges in the *.calib file
- Check calibration coefficients in *.calib file for at least 2 orders of magnitude difference between 2^nd order coefficient (x²) and 1^st order coefficient (x) in the last row