使用 python 捕获安捷伦示波器的屏幕截图

【问题标题】：Capture screen shot of Agilent scope using python使用 python 捕获安捷伦示波器的屏幕截图
【发布时间】：2022-08-05 01:21:40
【问题描述】：

我试图在 python 中捕获安捷伦示波器的屏幕截图，但使用 read_raw 给我一个问题“打印取消”你能帮忙吗

`import pyvisa as visa
 import sys
 #
 # Example VISA address for a USB         connection:
 VISA_ADDRESS = \'USB0::0x2A8D::0x1797::CN57046145::0::INSTR\'
# Define VISA Resource Manager
scope = visa.ResourceManager(\'C:\\\\Windows\\\\System32\\\\visa32.dll\')
scope.read_termination = \'\\n\'
scope.write_termination = \'\\n\' #or = \'\\r\'

print (scope.query(\'*IDN?\\n\'))
scope.write(\'SAVE:IMAG:FILEF PNG\')
scope.write(\':HARDcopy: STARt\')
raw_data = scope.read_raw ()
f= open (\'Shot.png\' \'wb\')
f.write (raw_data)
f.close `

标签： python scope pyvisa oscilloscope

【解决方案1】：

class SCOPE_MSO_S_104A:
    def __init__(self, address):
        self.rm = visa.ResourceManager(r'C:\WINDOWS\system32\visa64.dll')
        self.scope = self.rm.open_resource(address)
        self.scope.timeout = 10000 # 10s
        self.scope.write_termination = '\n'
        self.scope.read_termination = '\n'
        print('MSO S 104A ID string:\n  ', self.scope.query('*IDN?'), flush=True)
        self.scope.query('*RST;*OPC?')
    def getPng(self, file):
        time.sleep(1)
        data = self.scope.query_binary_values(':DISPlay:DATA? PNG,SCReen,1,NORMal', datatype='B', header_fmt='ieee', container=bytes)
        file_id = open(file, 'wb')
        file_id.write(data)
        file_id.close()
    def closeScope(self):
        self.scope.close()

# test in jupyter notebook:
scope = instruments.SCOPE_MSO_S_104A('USB0::0x2A8D::0x9050::MY55160105::0::INSTR')
scope.getPng('newPng.png')
from IPython.display import Image
Image('newPng.png')

【讨论】：

这对我有用，应该适用于大多数安捷伦/是德科技示波器