====== Waiting for External Synchronization Signal ====== {{:troubleshooting:art_dtrack:img_4079.jpeg?nolink&600|}} **Problem:** The Dtrack cameras do not connect, rebooting either the Dtrack server on the downstairs rack or the secondary servers on the mini-rack behind the center wall does not fix it. **Background**: We experienced this problem after there was a "scheduled" power outage on campus in order to test our battery backup generators. This experienced this for the first time on May 23, 2022. **Fix**: After troubleshooting with Jay Cochran at Mechdyne, the fix was to search for new hardware using the Dtrack software. - Ensure that Dtrack is stopped. If necessary, close the program, relaunch it, but do not click start. - Using the menus, click: **''Dtrack2 > Search hardware (F2)''**. - A screen pops up that says it will take up to 90 seconds, click Ok. - Now on the main screen, click start again. It should work now.