import serial
import pandas as pd
import matplotlib.pyplot as plt
ser = serial.Serial('COM3', '115200', timeout = 0.5)
print(ser.name)
serialCmd = b'WIN\r'
readSize = 17
loop = True
freq = ""
win = 0
data = []
plt.xlabel("Frequency")
plt.ylabel("Window voltage")
try:
while (loop == True):
ser.write(serialCmd)
result = ser.read(readSize)
res = str(result)
if (len(res) > 15):
i = res.find(",")
j = res.find(",", i + 1)
if ((i != -1) and (j != -1)):
freq = res[j + 1:j + 9]
win = int(res[i + 1:i + 4])
i = -1
b = False
for x in data:
i = i + 1
if (x[0] == freq):
data[i][1] = win
b = True
break
if (b == False):
data.append([freq, win])
df = pd.DataFrame(data, columns = ['Frequency', 'Window voltage'])
df = df.sort_values("Frequency")
plt.clf()
plt.xticks(rotation = 90)
plt.bar('Frequency', 'Window voltage', data = df)
plt.pause(0.05)
except KeyboardInterrupt:
loop = False
plt.close()
ser.close()
WIN\r = window voltage
PWR\r = signal strength (UBC-3500XLT does not support PWR command)
https://i.ibb.co/qCx9wvn/win-volt-scope.jpg
With freq/win voltage/timestamp logging
import serial
import pandas as pd
import matplotlib.pyplot as plt
import csv
from datetime import datetime
ser = serial.Serial('COM3', '115200', timeout = 0.5)
print(ser.name)
serialCmd = b'WIN\r'
readSize = 17
loop = True
freq = ""
win = 0
data = []
log_data = []
cols = ['Frequency', 'Window voltage', 'Timestamp']
plt.xlabel("Frequency")
plt.ylabel("Window voltage")
try:
while (loop == True):
ser.write(serialCmd)
result = ser.read(readSize)
res = str(result)
if (len(res) > 15):
i = res.find(",")
j = res.find(",", i + 1)
if ((i != -1) and (j != -1)):
freq = res[j + 1:j + 9]
win = int(res[i + 1:i + 4])
log_data.append([freq, win, datetime.now().strftime("%Y%m%y%H%M%S")])
i = -1
b = False
for x in data:
i = i + 1
if (x[0] == freq):
data[i][1] = win
b = True
break
if (b == False):
data.append([freq, win])
df = pd.DataFrame(data, columns = ['Frequency', 'Window voltage'])
df = df.sort_values("Frequency")
plt.clf()
plt.xticks(rotation = 90)
plt.bar('Frequency', 'Window voltage', data = df)
plt.pause(0.05)
except KeyboardInterrupt:
loop = False
plt.close()
ser.close()
with open("c:\\temp\\unidenscope.csv", 'w', newline = '') as csvfile:
csvwriter = csv.writer(csvfile)
csvwriter.writerow(cols)
csvwriter.writerows(log_data)
Frequency,Window voltage,Timestamp
04261000,372,20231023120213
04260000,369,20231023120214
04261000,374,20231023120214
04260000,367,20231023120214
04260250,371,20231023120214
04262000,373,20231023120214
04260000,356,20231023120214
04260250,368,20231023120214
....
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