Clear and cold in the morning, warmer and cloudier in the afternoon.
Did some blog catch-up of site pics, serial numbers, etc this morning. Data check showed HRXL at cc and dcs were down, but rebooting the dsms brought both of them back up. No other new sensor problems.
Did more troubleshooting at PRS with help onsite from Bill (thanks Bill!) and help over the phone from Chris (thanks Chris!). Turns out the problem on prsr with getting good data immediately after boot but then getting nothing is that at boot the port is configured correctly, but after a minute or so it gets configured for RS232 and therefore you don't get any more sonic data. This is due to interference with the HRXL usb-serial, which comes up as ttyUSB0, which apparently conflicts with ttyDSM0. I added a udev rule for the usb-serial at this site so it comes up as ttyHRXL, which seems to have solved the problem. I don't have anything plugged into port 0 right now, but checking with dsm_port_config shows that it remains set for rs485. Didn't do any looking at port 7, which was not reporting ott data the other day.
Also at PRS tried out the stepladder we found in the closet in the base trailer, but it's not tall enough to reach the 3m thermocouples. Got serial numbers from the 2m ec100 but couldn't reach the box for the 3m one.