I'm running the PNA-X with the latest firmware of A.10.49.10. I'm trying to single channel trigger an SMC channel which has some external multimeter trace measurements (current) set up on it. However, when I am in 'embedded LO' mode, the triggering seems to be stuck on 'Single' and not do anything. I then turned off the 'embedded LO' mode and triggered again and then it will work. So I'm not sure why it wouldn't work under 'Embedded LO' mode. If someone can verify, that would be great.