Hi,

Has anyone tried succesfully to split the LANC (Logic Application Control Bus) signal from a Sony hard wired remote controller to two Sony handycams before?

Now I know Manfrotto make a Remote Control Splitter Box (521SB) which can accept two remote control LANC signals and thus control one camera (such as zoom with one and focus with the other as is often used by professional camera people) but is it possible to split the LANC signal so that only one Remote Control device controls two cameras simulataneously?

As I understand it the LANC protocol is a biderectional serial open collector communication port, where two devices can communicate with each other. As I understand it, it uses 8 x 8 bit (words) for each desired function.

The problem that I see (if not slight attenuation over 30 meters (98ft) is that it might create conflicting problems as each camera in turn tries to send its status back to the remote control.

Any thoughts / ideas appreciated.

Thanks

 

I'll reply to this old post with info I found on more recent products.

Elm Electronics makes an IC chip to help with these circuits.
http://www.elmelectronics.com/thehome.html#ELM624

Applied logic engineering has a board:
http://www.appliedlogiceng.com/index_files/Page1431.htm

Webb electronics makes a product.
http://www.webbelectronics.com/html/VideoProducts/ProList.aspx?sortID=7

-AAC

 

Big thanks aac_1234 to some very useful leads. Excellent.
Andreas