Post by Lake Shore Ogi on Sept 6, 2018 15:45:28 GMT -5
No problem, I understand what you're trying to configure.
You will need to find the drivers of that converter that you have. There are so many of different brands available in the market. Note that we've seen issues with these converters too.. Some seem to work just fine and some simply don't work.
After you find the driver on the internet for your specific converter, and install it, I would suggest making sure that you try communicating with the instrument using our communications utility that can be downloaded at the link below. This will be the best and easiest way to confirm that your converter works.
I downloaded and installed the usb-serial converter driver. When using the 'lakeshore communications utility', there is no return string after sending '*idn?' command. Please attached screenshot. The converter I am using is Prolific with PL2303 chipset. Is that mean the converter is not compatible? Do you have any suggested converter?
Post by Lake Shore Ogi on Sept 7, 2018 7:58:40 GMT -5
There is one more thing, and I'm hoping this is it, why this is not working. The serial cable that you're using: is it a null modem cable, which it needs to be? On this type of cable, pins 2 and 3 are swapped on each end. You can see a diagram in the Model 325 manual in section 8.7.1 in the first schematic of that section.