for p3 a double selective RE-BURP pulse shape, so that this pulse acts simultaneously on the olefinic proton at δ_H = 6.9 (H-3) and the methyl group at δ_H = 1.8. For a second spectrum set this pulse to act on both olefinic protons. Change to the 2D mode of the spectrometer software. You have to set:

initial value for t₁ evolution: 3 μs
td2	1 k data points in F₂
td1	64 data points in F₁
sw2	8 ppm
sw1	50 Hz
o1	middle of ¹H NMR spectrum
p1	selective 90° ¹H transmitter pulse, E-BURP shape; 50 ms length at 55 dB was used here on H-3
p2	5 ms ¹H purging pulse
p3	double selective 180° ¹H transmitter pulse, RE-BURP shape; 50 ms length at 45 dB was used here on H-3 and CH₃
d1	2 s
increment for t₁ evolution: 1/[2·sw1]
preacquisition delay: as small as possible
ds	2
ns	4

5. Processing

Apply zero-filling in F₁ to 128 real data points. Use unshifted sinusoidal windows in both dimensions. Apply complex Fourier transformation corresponding to the N-type signal selection using the quadrature-off mode in F₁. Phase correction is not necessary, since the data are processed in magnitude mode.

6. Result