Thanks for response, Sean,
I had just recently gotten the manual, and also the program and driver.
My old installation stopped working when I ungraded to Windows 10. The program didn't see a connection to the device. I thought maybe the W8.1 driver might work but it didn't.
So I resorted to a fall back approach. I have an XP image (from a licensed laptop that died several years ago and was replaced) and I brought it up under VMWare. Then I installed the program and the driver, and the device was recognized.
However, it won't start to take a reading, which doesn't require the PC program. Plus when I do connect it to the PC and start a data download, it keeps going way past the displayed number of records and never stops. I thought maybe a memory full condition was preventing it from taking a reading (as mentioned in the manual).
That may actually be the case, but I have no way of telling since I can' complete the transfer or figure out another way to erase the memory.