4mm HXY probe. 1H-31P-15N, 31P-13C/15N insert. low range mode, using X preamp for Y channel observing
15N CP
sample: VP CN 20
ref to NH2 of glycine at 33.8 ppm, sr = 809.22 Hz
MAS = 5kHz
1H rf = 3us, 83kHz, 7.5dB
15N rf = 6.2us, 40kHz, 7.26dB
1H contact  4.2us, 60kHz, 10.5dB matched to 15N at 40 kHz, 7.26 dB
contact time = 6ms
1H decoupling = 83khz, 7.50dB
aq = 40ms












































































