This morning started with temps already in the 30s. There were low clouds which mostly cleared today along with a breeze.
This morning went to profiler site and heard crackling in the speakers again but this lasted a very short time and was not as noticeable as last time.
Matt and I listened to the PI's daily meeting as we are finding they talk a little more about IOP conditions and when they may or may not have them, so its been nice to get the little extra information.
This afternoon I took Matt to a few satellite sites (UP, PC, and SH) and he did some Leica measurements for the sonics.
When we had gotten back I checked on the profiler plots and notice there was very low signal to noise and no wind data which meant that the profiler was possibly not working. I went to ISS1 and saw that there was no current draw on the 50V power supply other than the normal fan current. The software was running but somehow no RF power was getting to the HPA's. The first thing I checked was that RF power was coming out of the RIM box, and I was reading the correct amount of power (~12.5dBm with 12dB attenuation). Then I suspected that the Delta Sigma driver amps were not getting the on/off signal, so I looked at the signal coming from J7 on the PCIe card, after comparing with what John saw on Parker in the lab and looking at the signal with the RF pulse I determined this was good. I also ensured that this signal was getting to amps, which it was. Next I went to go read RF power coming into the enclosure. There is a weather proof junction box outside of the enclosure where I have two different cables connected and I went to measure the power there and found that the connection was undone (picture below). Not sure how this happened. I then reconnected the two cables and turned the profiler back on and everything worked. I put tape around the connection to prevent this from happening again. The profiler is now back up and running as usual.
profiler observations: @1753 100m mode: 50V 5.48A, 31V 1.841A
@1600 150m rass mode: 50V 4.46A, 31V 1.895A
How I found the connection. The BNC somehow loosened and it was barley on the adapter.