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Topic: Barco DP2K Lamp not striking

Chris Markiewicz
Expert Film Handler

Posts: 209
From: Glenaviegh, County Tipperary, Ireland
Registered: Aug 2002

posted 06-25-2014 06:37 PM

I ordered 2 small bar magnets from Edmund Scientifics, since Barco had no magnets available. We converted 33 screens last year with 32Bs; all magnets were reversed.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004

posted 06-25-2014 09:17 PM

Going to head to Wally World and get a compass from their Sports Dept. I bet mine are reversed also.

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004

posted 06-26-2014 02:39 AM

Yep ..they were... !

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Monte L Fullmer
Film God

Posts: 8367
From: Nampa, Idaho, USA
Registered: Nov 2004

posted 06-27-2014 01:47 AM

Okey, got my magnet issues solved and glad to see that I'm not the only one with reversed magnets. Thus this is the end of this magnet topic.

But a question arises: Why doesn't the other modules require the magnet since it's basically no different than the 32B's module outside of running a much larger bulb?

thx - Monte

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999

posted 06-27-2014 06:33 AM

You'll find that is the rational...the larger lamps need more arc control than the smaller lamps with their much shorter arcs.

Personally, I've always questioned why there were not magnets and a means to see how the arc is performing like we had in the film lamphouses.

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Antti Nayha
Master Film Handler

Posts: 268
From: Helsinki, Finland
Registered: Oct 2008

posted 07-08-2014 10:13 AM

quote: Antti Nayha
Since I've found no way to restrict the CLO minimum and maximum power to something more conservative than Barco's presets, I've started to rely less on CLO and more on manual power settings.

For example, the aforementioned house uses an Ushio DXL-30BAF/L, which Barco's CLO happily runs at 1800-3000 W. I've now disabled CLO and set it up manually to always run 2D flat at 2000 W and 2D scope at 2800 W. Both 3D formats are also now being run at 2800 W.

Well, what do you know: Barco's new software (1.12.160) has changed the minimum/maximum wattages to more conservative values. At least the DXL-30BAF is now shown to have a range of 1960-3000 W in Communicator, instead of 1800-3000 W. On top of that, even when you try to set the lamp power to maximum manually, it already maxes out at around 2830 W!

I had to tweak my manual (non-CLO) settings, since the 0-255 scale doesn't mean the same thing anymore. For example, 205 used to correspond to 2800 W; now I have to go up to 245 to get 2800 W.

Lamp power changes are now also ramped more slowly, compared to the instant current change that has been the Barco tradition. Presumably both changes will help somewhat with premature strike/aging issues.

Edit: in my earlier post, I misidentified the lamp as DXL-30BAF/L... it's actually DXL-30BAF - for a little while longer, until we run out of those soon and move permanently to BAF/L's.

Edit 2: anyone care to check whether the maximum power is also reduced with larger lamps?

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999

posted 07-08-2014 12:36 PM

If you have a user level sufficient, you can go to the Installation>Lamp>Light Output and see both power and current for the lamp. Barco is set up such that any parameter can restrict the range (wattage, voltage or current).

If you go to the Installation>Advanced>FileManager screen...on the projector files...select the "Lamp files" There you will see all of the lamp files that have been installed. You can then select the one of interest, move it over to your computer and use your favorite text editor to see what the parameters are.

So you can satisfy your own curiosity as to what each file has in it.

This begs the question...can you modify one of those files to your liking and send it back over...the answer is mostly no! You can't send one of their files back, they are protected. But there IS a means to create your own (at your own risk, of course). For that information though, you will need to speak to Barco.

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Antti Nayha
Master Film Handler

Posts: 268
From: Helsinki, Finland
Registered: Oct 2008

posted 07-15-2014 08:11 AM

quote: Steve Guttag
If you have a user level sufficient, you can go to the Installation>Lamp>Light Output and see both power and current for the lamp.

Yeah, sure. At 255 manual power, the current reaches 2830 W and 104 A.

After some further playing around with the new software, I noticed that the new limitation is only in effect in the "normal mode". In CLO mode, the DXL-30BAF will happily run at 3000 W (and a bit more).

quote: Steve Guttag
If you go to the Installation>Advanced>FileManager screen...on the projector files...select the "Lamp files" There you will see all of the lamp files that have been installed.

Why am I not seeing a "Lamp files" directory in the File Manager? [Confused]

That was the first place I looked, but since they weren't there, I figured that the lamp files are hidden somewhere in the Barco sw package with no way to look at them...

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Justin Hamaker
Film God

Posts: 2253
From: Lakeport, CA USA
Registered: Jan 2004

posted 03-23-2015 03:28 PM

I was just curious to know what the results were from flipping the magnet? Are you seeing longer lamp life?

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Chris Markiewicz
Expert Film Handler

Posts: 209
From: Glenaviegh, County Tipperary, Ireland
Registered: Aug 2002

posted 03-23-2015 11:20 PM

Yes, all bulbs are now reaching warranted hours. No more hard striking, and little if any wear on the electrodes. Very little darkening of envelope.

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Sam D. Chavez
Film God

Posts: 2153
From: Martinez, CA USA
Registered: Aug 2003

posted 03-24-2015 12:06 PM

Does anyone have the field bulletin detailing the test to determine whether the magnet is reversed? I've lot track of my copy and having trouble finding it on Barco's site?

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999

posted 03-24-2015 12:42 PM

It is InfoT-1160.

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Mark Wylie
Film Handler

Posts: 2
From: Almancil, Algarve, Portugal
Registered: Mar 2015

posted 03-27-2015 02:30 AM

Hi I'm a newbie to DCI, so apologies if I am speaking out of turn. Although I have not had a lamp strike issues with Barco, I have had IP strings between an automation controller and projector fail - the projector accepted some commands but not others, it was random. So we changed to RS232 and now every command string is acknowledged and carried out. With IP commands if the PJ misses part of the string its lost.
Probably nothing to do with your problem and we don't have Doremi but the ICMP.

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Pete Naples
Phenomenal Film Handler

Posts: 1565
From: Dunfermline, Scotland
Registered: Feb 2001

posted 03-27-2015 03:15 AM

It's possibly opening the port, sending the string and closing the port again too fast for your automation.

Have a seek around these forums, there's a solution that works with Doremi and should work with strings in general.

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