Jump to content
Zero 88 Community Support Forum

Dimming problem with LED fixture and FF board

Recommended Posts

Greetings to all,


I have recently purchased (2) of the Chauvet Colorstip LED units. The user's manual indicates that if CH 1 is set to DMX values between 200-219, the unit will do RGB mixing. However, I am not able to get the units to dim up or down smoothly. I am using a Fat Frog board. There is alot of flashing as I advance the Fixture wheels up or down, but the non linearity making the RGB mixing useless.


Other important info: My FF board is one of the older units (FDD is near the PS input). I am using true DMX cable for the connection; running an opto isolator between the board & the fixtures; colorstrips patched as intel fixtures. The Red/Green/Blue are assigned LTP under the color attribute. The dim/strobe/control channel is assigned as LTP under the beam shape attribute.


I was able to get hold of an alternate DMX light desk, the Martin Freekie to test the colorstrip's dimming response. With that board, I can smoothly dim and mix from 0-100% with no issues at all.


Also, if I use another Chauvet LED, the PAR200B, I can get very smooth dim/mixing with the Fat Frog. I have tried this in both LTP (as an assigned fixture), and HTP by assigning the fixture directly to the preset faders.


So, what is going on with the colorstrip/Fat Frog setup? Is there anything I can do to "fix" this? (BTW-I am reluctant to call the fixture manufacturer for support, as I have had some less than stellar experiences with this in the past.)


Thanks for any (other) suggestions--John

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.