this weekend i was the media guy for an anthropology conference on campus (basically assist the presenters get their show going, make sure no computer snafus and the like) in a 600-seat hall.
because of its size, there are three ~ 10*14 projection screens in the room; the left/right are front projection, and the center is rear projection. everything is digital, the boards, document camera, slides, etc.
this room has been in operation since 2001 I think, and never has anyone used slides (the 35mm kind) to my knowledge. but it is equipped with 2 digital Elmo 35mm projectors.
well, as my luck would have it, one person today had a tray of slides, and her entire presentation was based on those 35mm slides. i'd never had any reason to use the Elmos before, so i set it up in the short break before she went on, turn it on, and "send" to all three screens. nada. it advances, so it is working, the fan's whirring too, iris opened up all the way, but no image! nooooooo! so i open up the side to check the lamp. its GONE. no lamp. ok, no worries, switch to the second slide projector. same deal: switched on, fan whirring, slides advance, iris opened, no image.
the lamp was burned out (filament appeared ok but brown haze on the lamp). uh oh. run back to the office, search thru the spare lamp cabinet, no dice. this is a small 12v 8w lamp. run to the "graveyard" equipment section, found an older Elmo, and pulled out the aging lamp (12v 6w).
now i should mention that due to the layout and size of the room, using standard 35mm projectors was out of the question: they would be too dim, and only be visible one side of the entire hall.
run back with this 6w lamp and a DMM (to see if socket was OK). socket ok, plug in this lamp, and it lights up....but so dim as to be useless.
a ha. i've got an E1e/KL1 in my pocket. stick that into the lamp housing, point it off axis (to get diffuse light) and see what happens. waaay to bright. CCD is gone purple from overload plus color temp issue (incand 3000k vs LS 8600K). no way to bring down the brightness level. 2D flashlights in office too bright, but boss has a pelican versalight headlamp in his desk, which i take, and it is just a bit on the bright side, but a bit of stopping down the iris, and voila, it works like a charm. had some extra batts but the show went on w/o a hitch, and no one was the wiser. boss-man was pleased to see flashaholic tendency saved our deparment some major embarrasment in front of big wigs like Duke, UCI/LA/U (where this was). /ubbthreads/images/graemlins/smile.gif
i was a happy camper rest of the day (esp after solving someone's big bad mac/quicktime problem).
because of its size, there are three ~ 10*14 projection screens in the room; the left/right are front projection, and the center is rear projection. everything is digital, the boards, document camera, slides, etc.
this room has been in operation since 2001 I think, and never has anyone used slides (the 35mm kind) to my knowledge. but it is equipped with 2 digital Elmo 35mm projectors.
well, as my luck would have it, one person today had a tray of slides, and her entire presentation was based on those 35mm slides. i'd never had any reason to use the Elmos before, so i set it up in the short break before she went on, turn it on, and "send" to all three screens. nada. it advances, so it is working, the fan's whirring too, iris opened up all the way, but no image! nooooooo! so i open up the side to check the lamp. its GONE. no lamp. ok, no worries, switch to the second slide projector. same deal: switched on, fan whirring, slides advance, iris opened, no image.
the lamp was burned out (filament appeared ok but brown haze on the lamp). uh oh. run back to the office, search thru the spare lamp cabinet, no dice. this is a small 12v 8w lamp. run to the "graveyard" equipment section, found an older Elmo, and pulled out the aging lamp (12v 6w).
now i should mention that due to the layout and size of the room, using standard 35mm projectors was out of the question: they would be too dim, and only be visible one side of the entire hall.
run back with this 6w lamp and a DMM (to see if socket was OK). socket ok, plug in this lamp, and it lights up....but so dim as to be useless.
a ha. i've got an E1e/KL1 in my pocket. stick that into the lamp housing, point it off axis (to get diffuse light) and see what happens. waaay to bright. CCD is gone purple from overload plus color temp issue (incand 3000k vs LS 8600K). no way to bring down the brightness level. 2D flashlights in office too bright, but boss has a pelican versalight headlamp in his desk, which i take, and it is just a bit on the bright side, but a bit of stopping down the iris, and voila, it works like a charm. had some extra batts but the show went on w/o a hitch, and no one was the wiser. boss-man was pleased to see flashaholic tendency saved our deparment some major embarrasment in front of big wigs like Duke, UCI/LA/U (where this was). /ubbthreads/images/graemlins/smile.gif
i was a happy camper rest of the day (esp after solving someone's big bad mac/quicktime problem).
