Going to Colorado?

Adam,

Mike exchanged emails with me on this last night. It is not something we have heard of before. The fixtures should continue to run fine as we don't inhibit lamp strike based on filter.

Please keep us up to date as how things behave when you get to a lower altitude again. I'm curious to hear the results.

Scott

I have seen older ETC dimmer racks post a "air flow error" when in higher climates.
The solution was to include a little funnel that forces air over the airflow sensor.
Not sure if that applies to DL2 however.
Joshua Wood

UPDATE...

Well, I'm in Phoenix, Arizona today and everything seems to be back to normal. I guess it was the high altitude after all.

Thanks for the replies.

Adam

Adam,

Thanks for the update. I went ahead and logged this as bug #10999 in our database to see if there is anything we can do to solve that issue.

Thanks!
Scott

(another) UPDATE...

Everything has been working great since the show in Denver... until yesterday. We were up in the mountains in Lake Tahoe, and this time all of my DL.2's had filter errors.

Today we're back to a normal altitude and things are fine.

I hope this helps to confirm the high altitude/filter error theory.

Thanks again.

Adam

Adam,

Well it definitely confirms one thing.... I need to take a research trip to Lake Tahoe!! I figure it might take 3-4 weeks of research, development and testing there. Most likely somewhere right on the Lake I think with a picturesque view. Be sure to let me know if you have any trouble in the Bahamas too...seriously! :)

All seriousness aside... I does sound like it is an altitude issue. Other than the errors, did you experience any other issues as a result?

If I remember right for example Sony video projectors have a high altitude mode...

mmm.. i think the high altitude mode is only refering to beeing close to the roof, in other words if the projector is beeing operated close to the ceiling where it's hot.. and therefor the fans will run faster if high "altitude" is selected.. atleast that's how i always enterperated those functions in a projector(many brands have similiar functions i believe)

Well, last fall when I did a show in Denver w/ DL.2s I had the same issue.

I never really thought about the altitude though b/c we had been out with them for almost 2 months at that point...I simply replaced the filters the next day during load-in at a lower altitude before powering up and the warning went away.

I'll be back in Denver towards the end of this month with units, and I'll let you know if I have issues again.

[quote=ahelgor]mmm.. i think the high altitude mode is only refering to beeing close to the roof, in other words if the projector is beeing operated close to the ceiling where it's hot.. and therefor the fans will run faster if high "altitude" is selected.. atleast that's how i always enterperated those functions in a projector(many brands have similiar functions i believe)
Well, for example the manual page 7 of the Sony VPL-PX40/35 projector says:
When using the projector at an altitude of 1,500 m or higher, turn on "High Altitude Mode" in the INSTALL SETTING menu. Failing to set this mode when using the projector at high altitudes could have adverse effects, such as reducing the reliability of certain components.

But you are right that fans run faster in that mode...to keep the thin air flowing and cooling.