[BUG]: PyVisa attempts to decode as UTF-8 when pulling binary data via curve.query from DPO70KSX #447
Description
Description of the bug
I have a DPO77002SX scope, set with a binary data encoding. When I attempt to pull data from the scope via curve, it throws a UnicodeDecodeError.
Looking at the trace, it looks as if read with encoding is used for this command, where likely read_raw should be preferred.
Steps To Reproduce
dm = DeviceManager(verbose = True)
2025-06-03 13:29:19.878971 - Opening DeviceManager
scope : DPO70KSX = dm.add_scope(IPADDRESS)
2025-06-03 13:29:59.132655 - Creating Connection to SCOPE 1
2025-06-03 13:29:59.306620 - (SCOPE) Query >> '*IDN?'
2025-06-03 13:29:59.311661 - Response from '*IDN?' >> 'TEKTRONIX,DPO77002SX,B300040,CF:91.1CT FV:10.14.0 Build 15'
scope.commands.data.encdg.query()
2025-06-03 13:31:35.774415 - (SCOPE 1) Query >> 'DATa:ENCdg?'
2025-06-03 13:31:35.797447 - Response from 'DATa:ENCdg?' >> 'RIBINARY'
'RIBINARY'
data = scope.commands.curve.query()
2025-06-03 13:32:06.715141 - (SCOPE 1) Query >> 'CURVe?'
2025-06-03 13:32:06.812698 - UNCAUGHT EXCEPTION!!!
Traceback (most recent call last):
File "", line 1, in
File "C:\sw\automatedtest.venv\lib\site-packages\tm_devices\commands\helpers\scpi_commands.py", line 60, in query
return self._device.query(self._cmd_syntax + "?") # type: ignore[union-attr]
File "C:\sw\automatedtest.venv\lib\site-packages\tm_devices\driver_mixins\device_control\pi_control.py", line 347, in query
response = self._visa_resource.query(query).strip()
File "C:\sw\automatedtest.venv\lib\site-packages\pyvisa\resources\messagebased.py", line 690, in query
return self.read()
File "C:\sw\automatedtest.venv\lib\site-packages\pyvisa\resources\messagebased.py", line 519, in read
message = self._read_raw().decode(enco)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xef in position 12: invalid continuation byte
Environment Information
No response
Additional Information
No response