Regardind DG645 Ethernet interface

[femto@4141]

 We have LabVIEW 2017 version and we are trying to interface SRS DG645  using ethernet. We have downloaded LabVIEW drivers for the same version(zip file is attached below), in which connection is possible only with  USB (VISA interface is only possible). Help us in interfacing with ethernet. 

[rolfk]

On page 43 in this manual it shows that the DG645 actually supports VXI-11 access over the Ethernet interface. This is good news as NI-VISA can connect almost automatically to VXI-11 capable instruments and access them just as if they were connected through GPIB.

So you want to make sure that you have enabled in your device the "Net Instr. Enable/Disable" setting. You may also want to set a manual IP address that is compatible with your network configuration. Then you go into NI-Max and do a find instrument: Open NI-Max, right click on Devices and Interfaces and select Create New... In the dialog that you see select VISA/TCP Resource, then Auto-Detect LAN Instrument. It should find your device if it is connected to the local network, powered on and configured to use a compatible TCP/IP address for your network.

The nice thing is that your driver is likely going to work unaltered if you specific the new LAN VISA resource name rather than the serial port before as VISA Resource. The driver has been written with support for GPIB, TCP/IP and RS-232 through NI-VISA.