CPMG Echo Train

CPMG echo train simulation
****** The System *******
spectrometer(MHz)  *
spinning_freq(kHz) *
channels           C13
nuclei             C13
atomic_coords      *
cs_isotropic       *
csa_parameters     *
j_coupling         *
quadrupole         *
dip_switchboard    *
csa_switchboard    *
exchange_nuclei    *
bond_len_nuclei    *
bond_ang_nuclei    *
tors_ang_nuclei    *
groups_nuclei      *
******* Pulse Sequence ******************************
CHN 1
timing(usec)       0.5 [1000]2900
power(kHz)         500 [0]2900       
phase(deg)          90 [0]2900       
freq_offs(kHz)       0 [0]2900
******* Variables ***********************************
T2SQ_1_1=1000
sigma=0.006
pulse_1_1_[100:200:2900]=1.0
power_1_1_[100:200:2900]=500
ave_par x/-0.02:0.0025:0.02/
cs_iso_1=0.1+x
ave_wht=0.0025*exp(-0.5*(x/sigma)^2)/sqrt(2*pi)/sigma
******* Options **************************************
rho0               I1z
observables        I1p
EulerAngles        *
n_gamma            *
line_broaden(Hz)   *
zerofill           *
FFT_dimensions     *
options            -oes -re