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Steps to move the magnet current from 74.51 A to 74 A

1. Select the option "Up to 74.51 A at 0.5 A/m" from the "Presets" field.
   
   
   
2. Press the "To Set" button and wait until the "Output current (A)" increases up to 74.51 A. It will take about 5 mins, and once the output current reaches 74.51 A, it will be automatically switched back to the "Hold".
   
   
   
3. Press the toggle button next to the "Main Switch Heater" status indicator. Once you press it, then it will show a similar screen as shown below.
   
   
   Once this process is completed, then the "PD Readings" will indicate ON (see the screenshot below).
   
   
   
4. Select the option "Down to 74 A at 0.5 A/m" from the Presets.
   
   
   
5. Press "To Set".
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   Wait until the magnet current moves to 74 A, and it will go back to "Hold".
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6. Now you can take the NMR baseline. Proceed with step #2 on How to take a baseline and then take data on UVA-NMR system

Steps to move the magnet current from 74 A to 74.51 A after taking the baseline

1. Select the option "Up to 74.51 A at 0.5 A/m" from the "Presets" field.
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2. Press "To Set", and wait until the current goes up to 74.51 A and also it automatically switch to "Hold".
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3. Press the toggle button next to the "Main Switch Heater" status indicator. Once you press it, then it will show a similar screen as shown below.
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   Once it is completed, then "PD Reading" indicators will indicate "OFF".
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4. Press "Hold" button and wait for a couple of seconds.
5. Press "To Zero", and wait until the Shim current goes to Zero.
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6. It will go back to the "Hold" once the shim current is ramped-down.
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7. Now, you can continue NMR data taking.