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Checkout requirements

Prerequisites: Attendance to both a Data Acquisition and a Data Processing lecture. You cannot take your checkout test until you have done both of these. You can sign up for training sessions from our training page.

Purpose: You should be able to demonstrate the ability to perform routine acquisition and data processing of 1D NMR data. This will help us to ensure that you are able to operate the instrument on your own during times when facility staff is not present to assist you.

Time Limit: 15 minutes.

Important:You are not allowed the use of any notes or handouts that we have given you, and no questions pertaining to the acquisition or processing of data will be answered. You can, however, bring a 4" x 6" index card with handwritten notes only. If you fail to adhere to these requirements or perform unsatisfactorily, you will be required to schedule another checkout test for a date no sooner than two weeks later.

You should be able to:

• Prepare an adequate NMR sample
• Measure the depth correctly and insert the sample
• Load the VNMR software
• Set up an appropriate experiment
• Turn the spinner on (or off), if necessary
• Load the default shim file
• Load the default shim map
• Manually lock and shim the magnet, adjusting Z0, lock power, lock gain, and lock phase correctly
• Change acquisition parameters as necessary or as instructed. This may include the number of scans (nt), relaxation delay (d1), block size (bs), spectral window (sw), transmitter offset (tof), decoupler nucleus (dn)
• Acquire the spectrum
• Transform the FID (if necessary)
• Manually adjust the phase correction
• Adjust zero filling as necessary and if instructed
• Apply an appropriate window function
• Set your reference peak for ppm scaling (TMS, CHCl3, etc.)
• Adjust the vertical scale
• Adjust the vertical position
• Integrate the spectrum
• Set an integral reference
• Apply a drift correction and/or a baseline correction
• Define plot limits
• Adjust the peak picking threshold
• Plot the spectrum, scale, parameters, integrals, peak frequencies
• Plot a line list
• Save the data in the appropriate directory
  Spectrometers: | ARX300 | Mercury 300 | INOVA 400 | INOVA 500 | INOVA 600 | Workstations
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  Questions, concerns, comments? Contact Ivan Keresztes, B-54, 255 0709, ik54@cornell.edu