We have been running tinj so that it injects transient hardware injections into CAL-INJ_TRANSIENT_EXC. I updated tinj to use CAL-PINJX_TRANSIENT_EXC, this is the hardware injection excitation channel that uses PCAL. The procedure was: (1) Edit tinj.m to use CAL-PINJX_TRANSIENT_EXC (2) Stop tinj using the monit web interface (3) Compile run_tinj using the command (note I did not source anything into my env): mcc -R -nojvm -R -nodisplay -R -singleCompThread -m run_tinj (4) Commit changes to SVN (5) Restart tinj using the monit web interface I tailed tinj.log and it was updating as expected. And checked that the run_tinj process was running with both monit and top.