If a camera does not accept Timecode IN then we can use a work around.
If you're using a minitrx+ attached to the camera you can do this through our custom BNC to Mini-jack cable (TCB-42).
If you're using an UltraSync ONE you can do this through our custom DIN to Mini-jack cable (TCB-52).
You can drop the LTC output of the units to MIC level and input the timecode on the camera's audio track. This provides a quicker and neater solution in post - for example in in Avid which can natively decode aux LTC from the audio track. It also gives you a visual way to check that the timecode is in sync across all of the devices, by comparing the displays/blinking lights.
We have put together a short video which demonstrates both of these solutions here: https://vimeo.com/161035962
The TCB-42 and TCB-52 can also be purchased via our web store: www.timecodesystems.com/shop