Standard line shape test sample: 60% benzene/40% p-dioxane.

Record a conventional ¹H spectrum.

Record a conventional ¹³C spectrum.

The calibration of the ¹³C line shape is performed using the standard C13HUMP parameter set (the pulse program is set to pulprog zgcw30). The width of the benzene resonance line is measured at the height of 0.55% and 0.11%. 

The test is usually performed using a sample spinning rate of 20 Hz.

o1 and o2 are set on resonance of the ¹³C and ¹H benzene resonances, respectively.

Set p1 to the 90º ¹³C observe pulse and pl14 to the low power level for ¹H decoupler pulse decoupler attenuation for continuous wave decoupling.

. Reference the benzene line to 0.0 Hz.

Plot from 7 to -8 Hz with a CX=15 cm (1.0 Hz/cm) and a CY=1000 cm. Determine the lineshape at 5.5 cm and 1.1 cm height. The plot window must also show the spinning sidebands.