I understand that you have the USB and TCPIP devices connected to the machine but still the "visadevlist" function is not listing those devices in its output.
To resolve the issue kindly verify that the devices are properly connected to the machine. You can use the "visadev" function to connect to your device. Kindly refer to the below code for the same:
% ResourceName is a valid resource name string for the device you are trying to connect to
>> device = visadev(ResourceName)
To learn more about the "visadev" function, please refer to the following documentation link:
If "visadev" fails, please ensure that you have a valid VISA driver installed, either from National Instruments or Keysight, and the VISA conflict manager in either NI MAX or Keysight Connection Expert is configured so at least one VISA driver is enabled and set as preferred.
If "visadev" works with all connected devices, this issue might occur because "visadevlist" tries to ping all connected devices, and some devices might sometimes take up more time than timeout to connect. Please try to increase the timeout length in the "visadevlist" function:
>> visadevlist("Timeout", 60);
% Above code sets the timout of 60 seconds.
To learn more about the "visadevlist" function, please refer to the following documentation link:
Hope this helps.
