I made a DetChar safety study hardware injection using the Guardian infrastructure.

From the schedule file (rev 5233):
1163822000 H1 INJECT_DETCHAR_ACTIVE 0 1.0 detchar/detchar_03Oct2015_PCAL.txt

The injection was successful.

To make this happen, however, I had to manually change the "dev_mode" in INJ_TRANS.py from False to True since the interferometer intent bit was not set. I reverted this change after the injection was successful.

One minor note, from the Guardian log file, I got a warning, but I don't know if it is an issue:
2016-11-22T03:52:51.02490 Aborting Logging because SIStrLog call failed -1