Hi-Def signal in a PRO post
Posted 27 December 2007 - 02:25 PM
Posted 27 December 2007 - 03:28 PM
Posted 27 December 2007 - 04:59 PM
Posted 27 December 2007 - 05:53 PM
Wondering if a hi-def signal will travel down a PRO post. I remember reading somewhere that it can't because the gauge of wire that carries that signal is not big enough and will only carry a video signal. Is this true or am I misinformed?
I ran a separate wire down my EFP post. for HD, it is the same wire that Tiffen is using for the HD signal on the Ultra.
Maybe it has something to do with the shield. I think Eric addressed this once, any of you guru techno weenies out there have a compitent explanation why this cable works and a regular 73 ohm BNC cable doesn't
By techno weenies, I mean that in the nicest way possible . . .LOL . . . . .hehehehe
Posted 27 December 2007 - 08:12 PM
The Lemo connectors are okay for composite and for component (RGB) HD***, but not good enough for HDSDI.
*** I should be clear that it works at least for component the way Tiffen does it: one Lemo connector at each end and the "post break" done with a special coax/"no-shield-loss" connector. Not sure what effect a couple of Lemos in the post would have.
Sleds without post connectors (like the EFP) can get by with a single, well shielded coax cable, and do better with a special BNC designed especially for HDSDI at each end of the sled.
My suggestion before anyone rips apart their rig is to make a test cable using ALL the same connectors, cable lengths, power, etc. and see how it goes first.
Posted 28 December 2007 - 09:38 PM
If you just want to hook up a HD LCD display on your sled my guess is that all the signal loss and jitter introduced in the post wouldn't matter one bit (assuming you bypass the composite video da of course)
If you also want to record a pristine signal it's a whole other ballgame.
But I have send single link HD-SDI thru lots of small gauge wire extended thru bnc tubes onto 50 feet cables for monitoring many times and it seems to work fine.
But as Jerry says, test before doing anything irreversible.....
Posted 15 May 2010 - 06:03 PM
If I do an HD upgrade to my PRO sled, will I still be able to run my usual SD setup with the PRO monitor and the and the sleds electronic bubble?
In the HD setup-
How I understand it, the HD monitor is directly powered by an attached battery brick and the signal is fed through an SDI cable coming from the batterymodule.
I would be happy to hear from anyone hwo has experience with this.
Posted 24 September 2010 - 05:48 AM
I'm thinking about upgrading my "PRO compatible" rig to HD and I'm hoping to come up with a custom center post loom that will carry all the power as well as two sdi channels. I'm keen to keep it all in the one loom so I can adapt a super post swell. Is there a Lemo conector that will fit into a 1.5 center post, and allow two SDI channels?