on call

so last night when I was leaving the lab after my shift I told X to call me if there were any problems.

Silly me.

At 3:30 I get a phone call. The data disc was full, and there was a problem communicating with the acquisition computer. I spent an hour talking him through the various stages of debugging, and struggling to not mix my instructions with the dreams I'd been having. "So first you need to check the cathode signal on the oscilloscope, and then you need to put out gummi bears for the unicorns....but only lemon ones....."