# system setup
nmrObj.initNmrSystem() # necessary to set the GPIO initial setting
nmrObj.deassertAll()
nmrObj.assertControlSignal(nmrObj.PSU_5V_TX_N_EN_msk | nmrObj.PSU_5V_ADC_EN_msk
| nmrObj.PSU_5V_ANA_P_EN_msk
| nmrObj.PSU_5V_ANA_N_EN_msk)
if ((target_freq < sta_freq) | (target_freq > sto_freq)):
print("Warning: Target frequency out of range")
if (load_para):
# parameter from
(FreqList_S21, PeakVoltage,
VvaracList, VbiasList) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS21Table_input_10k.txt') # read file
Vbias = VbiasList[[
i for i, elem in enumerate(FreqList_S21)
if abs(elem - target_freq) < 0.01
][0]]
Vvarac = VvaracList[[
i for i, elem in enumerate(FreqList_S21)
if abs(elem - target_freq) < 0.01
][0]]
else:
Vbias = -2.0
Vvarac = 2.8
# (vbias vvarac)
nmrObj.setPreampTuning(Vbias, Vvarac) #-2.5, 2.8) # try -2.7, -1.8 if fail
print('----------------------------------')
print('plength = ' + str(pulse_us_sw[i]) + ' us')
pulse1_us = pulse_us_sw[i] # pulse pi/2 length
pulse2_us = 1.5 * pulse_us_sw[i] #pulse1_us*1.8 # pulse pi length
P90[i] = pulse1_us
P180[i] = pulse2_us
#cpmg_freq=cpmg_freq
# compensate for setup
freq_comp = cpmg_freq + 0.10
freqS21_comp = cpmg_freq
if (load_para):
# parameter from
(FreqList, s11List, CparList,
CserList) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS11Table_final_input_10k.txt') # read file
Cpar = int(CparList[[
i for i, elem in enumerate(FreqList)
if abs(elem - freq_comp) < 0.01
][0]])
Cser = int(CserList[[
i for i, elem in enumerate(FreqList)
if abs(elem - freq_comp) < 0.01
][0]])
(FreqList_S21, PeakVoltage, VvaracList,
VbiasList) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS21Table_input_10k.txt') # read file
Vbias = VbiasList[[
i for i, elem in enumerate(FreqList_S21)
if abs(elem - freqS21_comp) < 0.01
min_freq = 0.001
max_freq = 4#12.5
# system setup
nmrObj.initNmrSystem() # necessary to set the GPIO initial setting
nmrObj.assertControlSignal( nmrObj.PSU_15V_TX_P_EN_msk | nmrObj.PSU_15V_TX_N_EN_msk | nmrObj.PSU_5V_TX_N_EN_msk |
nmrObj.PSU_5V_ADC_EN_msk | nmrObj.PSU_5V_ANA_P_EN_msk |
nmrObj.PSU_5V_ANA_N_EN_msk )
nmrObj.deassertControlSignal(
nmrObj.PSU_15V_TX_P_EN_msk | nmrObj.PSU_15V_TX_N_EN_msk )
freq_comp = target_freq+0.10
freqS21_comp = target_freq
if (load_para):
# parameter from
( FreqList, s11List, CparList, CserList ) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS11Table_final_input_10k.txt' ) # read file
Cpar = int(CparList[[i for i, elem in enumerate( FreqList ) if abs( elem - freq_comp) < 0.01][0]])
Cser = int(CserList[[i for i, elem in enumerate( FreqList ) if abs( elem - freq_comp) < 0.01][0]])
#Cpar = 0
#Cser = 0
( FreqList_S21, PeakVoltage, VvaracList, VbiasList ) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS21Table_input_10k.txt' ) # read file
Vbias = VbiasList[[i for i, elem in enumerate( FreqList_S21 ) if abs( elem - freqS21_comp) < 0.01][0]]
Vvarac = VvaracList[[i for i, elem in enumerate( FreqList_S21 ) if abs( elem - freqS21_comp) < 0.01][0]]
else:
Cpar = 563
Cser = 327
Vbias = -2.0
return S11dB, minS11_freq
if ((target_freq < sta_freq) | (target_freq > sto_freq)):
print("Warning: Target frequency out of range")
# find reference
print('Generate reference.')
S11mV_ref, minS11Freq_ref = runExpt(
0, 0, 0,
0) # background is computed with no capacitor connected -> max reflection
freq = target_freq - 0.04 # freq compensation
if (load_para):
# parameter from
(FreqList, s11List,
CparList, CserList) = data_parser.parse_csv_float4col_s11(
para_folder, '/genS11Table_final_input.txt') # read file
Cpar = int(CparList[[
i for i, elem in enumerate(FreqList) if abs(elem - freq) < 0.05
][0]])
Cser = int(CserList[[
i for i, elem in enumerate(FreqList) if abs(elem - freq) < 0.05
][0]])
else:
Cpar = 598
Cser = 352
while True:
runExpt(Cpar, Cser, S11mV_ref, 1)