You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
816 B
36 lines
816 B
7 years ago
|
#!/usr/bin/env python
|
||
|
|
import numpy as np
|
||
|
|
import visa
|
||
|
|
import matplotlib.pyplot as plt
|
||
|
|
|
||
|
|
resources = visa.ResourceManager()
|
||
|
|
print resources.list_resources()
|
||
|
|
|
||
|
|
scope = resources.open_resource('USB0::0x1AB1::0x04CE::DS1ZA184652242::INSTR', timeout=2000, chunk_size=1024000)
|
||
|
|
print(scope.query('*IDN?').strip())
|
||
|
|
|
||
|
|
#voltscale = scope.ask_for_values(':CHAN1:SCAL?')[0]
|
||
|
|
#voltoffset = scope.ask_for_values(":CHAN1:OFFS?")[0]
|
||
|
|
|
||
|
|
#scope.write(":STOP")
|
||
|
|
scope.write(":WAV:POIN:MODE RAW")
|
||
|
|
scope.write(":WAV:DATA? CHAN1")[10:]
|
||
|
|
rawdata = scope.read_raw()
|
||
|
|
data = np.frombuffer(rawdata, 'B')
|
||
|
|
print data.shape
|
||
|
|
|
||
|
|
s1 = data[0:650]
|
||
|
|
s2 = data[650:]
|
||
|
|
s1i = np.argmax(s1 > 100)
|
||
|
|
s2i = np.argmax(s2 > 100)
|
||
|
|
s1 = s1[s1i:]
|
||
|
|
s2 = s2[s2i:]
|
||
|
|
|
||
|
|
plt.plot(s1)
|
||
|
|
plt.plot(s2)
|
||
|
|
plt.show()
|
||
|
|
#data = (data - 130.0 - voltoffset/voltscale*25) / 25 * voltscale
|
||
|
|
|
||
|
|
print data
|
||
|
|
|