An oddity whilst programming a chase

[Martin Oakley]

I have posted a couple of things regarding chases and all have been answered - thank you!!
New query. Requirement of a chase of two LED's - one LED set red the second green. a slow chase of alternating red and green (10BPM) just alternate fading up and down (colour stays fixed to LED)
Desk set no tracking. LED fixtures (PAR's) set and controlled on MFF 1 and 2.
First: MFF 1 up full, colour set to red. Program to Playback 10. MFF to zero. Second: MFF 2 up full, colour set to green. Program to Playback 10. Select as chase. MFF to zero. Select playback.Setup on playback with global BPM field set to 10BPM.

MFF 10 to full. two LED's alternate (snap red/green)

On the two playback lines (playback view) the two lines that a alternate green/yellow I see fade up/down times on one as 3 and 3 seconds but the other as 0 and 0. I have altered them so they are the same but makes no difference. The only time I can get them to fade up and down is to go to the Setup for playback 10 and adjust Intensity %. That then causes a further issue that the fade up and down is as required but the second fixture (the one that had its times as 0 and 0) fades up and then snaps to white and then fades down. On the channels display you see the intensity 'count' up and down  but one does so in BLUE (the channel that performs correctly) but the one that misbehaves counts up in BLUE and but when the colour snaps to white the intensity value snaps to white, continues to count up and then down.

The first cycle behaves correctly but the second and subsequent ones 'fail'. You don't seem to be able to undo the situation - only delete it and start again!!

[Edward Z88]

Hi Martin,

If you are viewing the cues recorded as a chase in the cue list window, the fade times you see are not used for chases. These times are purely there for if you were to revert the playback from a chase to a cue stack. Therefore adjusting these won’t effect your chase. Instead go into the settings of your chase, ensure Cross Fade is selected, and then enter an intensity fade percentage. If you enter a colour percentage, do you find this solves the issue?

If you are seeing a white intensity value in the output window, it means that channel has been blocked. Basically in this scenario it sounds like in cue 1 of the chase fixture 2 has been given hard values of white, which means that as you fade down from cue 2 to cue 1 you see the colour change.

If you’d like one of the team to take a look at your show file, please send us an email to support@zero88.com with it attached, and we’ll be able to take a look and give you an explanation of what’s causing the isssue. 

Hope this helps, let me know if you have any queries. 

Edward

[Martin Oakley]

Hi Edward.
Again many thanks. I will now look at intensities and colour

Given you second comment about hard value, I am thinking if I approach it differently and set my intended colours at the outset i.e. fixture 1 is set at red and fixture 2 to green before I create the playback then create the playback/chase.

Again many thanks for your help

[JWylie91]

19 minutes ago, Martin Oakley said:

Hi Edward.
Again many thanks. I will now look at intensities and colour

Given you second comment about hard value, I am thinking if I approach it differently and set my intended colours at the outset i.e. fixture 1 is set at red and fixture 2 to green before I create the playback then create the playback/chase.

Again many thanks for your help

That would have been my method of approaching programming this chase. I would, as you have suggested, initialise each fixture with its desired colour then simply take the intensity down, then record and repeat with the intensities reversed... 

That way I would be sure that the information given to the fixtures is always going to contain my required colour data. 

[Martin Oakley]

Thanks JWylie91. I shall be doing just that. I guess I was in a bit of a rush to do the effect (which will be vastly expanded on but wanted to test it basic!!)

Thank you.

[Edward Z88]

2 hours ago, Martin Oakley said:

Hi Edward.
Again many thanks. I will now look at intensities and colour

No problem, let me know how you get on. 

Edward

[Martin Oakley]

My fading chase still behaves oddly.

One thing I did notice is that whilst I set my fixtures on MFF49 and MFF50 and select the colours I want on each fixture and that when I fade up I get that colour, if I double click the CLEAR button as you would if you make changes in a normal Master playback scenario the colours are reset back to, in my case, white.

The fading up/down to the BPM works by adjusting intensity and colour settings under Setup for the cue (in my case 19) but the colour still flicks back to white at about 90% fade up in intensity. File of just this is attached. I would like to know what I am doing wrong.

fading chase.isf

[Edward Z88]

Hi Martin,

I’ve had a quick look at your show file, and there’s definitely something strange going on. There’s nothing in your programming that is causing the issue. 

I will have to do more investigating. 

Edward