Comments on: HTP vs LTP – Lighting Desk Basics 5

By: Alon Cohen

Alon Cohen — Fri, 30 Dec 2011 21:19:13 +0000

Thank you Rob for the enlightening responses.

By: Rob Sayer

Rob Sayer — Thu, 29 Dec 2011 16:38:00 +0000

You can define things like IPCB faders, Use HTP etc. on many consoles. In the case of playbacks, precedence is often set by a series of priorities and also usual LTP HTP rules. If you have an HTP playback running then that obviously wins over anything HTP, until it’s released and the next one takes over or a new level is set via LTP. I’ve never had a conflict with these rules running multiple playbacks, where I didn’t know what to expect. If you use fader position for CMY in one cue, then fire another LTP cue that contains different colour data, LTP still applies in every case I’ve tried because at Patch level they are still LTP channels. The question comes down to the way the the desk handles playback priority.

The point I made about the patch is pertinent because that is the only place where a conflict might occur – if only it was allowed.

By: Alon Cohen

Alon Cohen — Thu, 29 Dec 2011 15:58:13 +0000

Hi Rob,
Thank you for your reply.

Sure I understand with the Patch, but what I meant was what if the playback owns that option, like most modern monster boards do.
I noticed on the gMA2 if you have a cue on one fader with the same channel on another cue on another fader, one can be defined HTP and the other LTP.
There is a set of rules there which I could not follow exactly the reason for.

I am still researching…

By: Rob Sayer

Rob Sayer — Thu, 29 Dec 2011 11:02:34 +0000

Hi Alon

No lighting console that I know about will allow you to patch the same DMX address/channel to two different controls so there would not be a situation where a particular DMX address ran as HTP and LTP simultaneously.

Along with Dimmer attributes, Red, Green and Blue of an RGB might be useful as HTP, basically because they are also dimmer attributes. I can’t see any reason why there would be any benefit in setting anything else, like Pan and Tilt, as HTP. In fact, before we had proper moving light desks, we often used to run scanners from a simple DMX desk with faders that all ran HTP. It wasn’t fun.

By: Alon Cohen

Alon Cohen — Thu, 29 Dec 2011 09:40:32 +0000

Could there be a situation where one playback is running channels as LTP and another playback is running the same channels as HTP?
If yes, what happens when the LTP fader initiates?

Is there any reason for setting other moving light attributes, such as Pan and Tilt as HTP?

By: Tarsaim Kumar Agarwal

Tarsaim Kumar Agarwal — Mon, 06 Jul 2009 15:03:53 +0000

I have visited this site about a year back,and learned a lot for operating intelligent lights.The tips available are very useful.I want to learn more on programming.Now a days I am in London for
a month,Pl.convey me any such contact/reference. Thanks.

T.K.Agarwal

By: Rob

Rob — Sat, 05 Jul 2008 20:07:50 +0000

Thanks T.K

Keep visiting – there is a lots more help coming in the future.

By: tarsaim kumar agarwal

tarsaim kumar agarwal — Tue, 01 Jul 2008 18:11:07 +0000

the article is very useful for begginers.as am i.thanks for helping begginers
T.K.Agarwal