Created
March 2, 2023 13:17
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Fitting function for QUAK/ESR bias amplifiers
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import matplotlib.pyplot as plt | |
import numpy as np | |
import sys | |
from time import sleep | |
from pymso5000.mso5000 import MSO5000 | |
from pyka3005p.ka3005pserial import KA3005PSerial | |
scanchannel = 2 | |
nScans = 5 | |
scanrange = np.linspace(0, 10, 11*10) | |
with MSO5000(address = "10.0.0.123", useNumpy = True) as mso: | |
mso.set_channel_enable(scanchannel, True) | |
with KA3005PSerial('/dev/ttyU0', False) as psu: | |
fig, ax = plt.subplots(2, figsize=(6.4*10, 4.8*2*10)) | |
psu.setVoltage(0) | |
psu.setCurrent(0.1) | |
sleep(0.5) | |
psu.setChannelEnable(True) | |
# Now run nScans scans | |
voltagesIn = scanrange | |
voltagesOut = np.zeros((nScans, len(voltagesIn))) | |
voltagesOutStd = np.zeros((len(voltagesIn),)) | |
voltagesOutMean = np.zeros((len(voltagesIn),)) | |
for iScan in range(nScans): | |
for iPoint, pt in enumerate(voltagesIn): | |
psu.setVoltage(pt) | |
sleep(0.5) | |
# Measure on MSO | |
mso.force_trigger() | |
sleep(0.2) | |
data = mso.query_waveform(scanchannel-1, stats = [ "mean" ]) | |
# Why does stats = mean not work?!?! | |
voltagesOut[iScan, iPoint] = np.mean(data['y']) | |
ax[0].plot(voltagesIn, voltagesOut[iScan], label = f"Scan {iScan}") | |
for iP in range(len(voltagesIn)): | |
voltagesOutStd[iP] = np.std(voltagesOut[:,iP]) | |
voltagesOutMean[iP] = np.mean(voltagesOut[:,iP]) | |
data = { | |
"voltageIn" : voltagesIn, | |
f"voltageOut{scanchannel}raw" : voltagesOut, | |
f"voltageOut{scanchannel}mean" : voltagesOutMean, | |
f"voltageOut{scanchannel}std" : voltagesOutStd | |
} | |
np.savez(f"channel{scanchannel}.", **data) | |
ax[1].errorbar(voltagesIn, voltagesOutMean, voltagesOutStd) | |
ax[0].set_xlabel("Voltage In [V]") | |
ax[0].set_ylabel("Voltage Out [V]") | |
ax[0].set_title("Measurements") | |
ax[0].grid() | |
ax[1].set_xlabel("Voltage In [V]") | |
ax[1].set_ylabel("Voltage Out [V]") | |
ax[1].set_title("Average") | |
ax[1].grid() | |
plt.savefig(f"channel{scanchannel}.png") | |
plt.savefig(f"channel{scanchannel}.svg") | |
plt.show() |
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