From: Sandy King (sanking@clemson.edu)
Date: 11/27/02-10:50:43 AM Z
Jeff,
I think Clay has correctly identified your problem. If you look at
the probe there should be a screw which when turned will allow you to
rotate the dial in such a way as to decrease or increase the amount
of light that can pass through to the photo-sensitive diode.
BTW, I would also suggest that you place the probe a few inches away
from the printing area to avoid having to move it when you actually
print. My probe is mounted on a vertical wall about 25" from the tip
of the bulb, almost on a straight line, and I get very reliable
readings from this position.
Sandy
>Jeff:
>
>My Nuarc unit has a little aperture device above the integrator
>cell, sort of like waterhouse stops on old lenses. The idea is to
>rotate around to holes of differing diameters - smaller diameters
>admitting less light of course. It sounds like you need to restrict
>the amount of light reaching the photocell in some manner. Does your
>device have something similar, or could you rig up something like
>that if it doesn't?
>
>Clay
>
>On Wednesday, November 27, 2002, at 09:42 AM, Jeff Buck wrote:
>
>>To Those Who Weighed In On Integrator Issues Recently: I got hold
>>of an Olec "Olix AI 950." Having trouble calibrating it for my HID
>>lamp, which is a 1000W metal halide lamp and is positioned 34"
>>above the printing surface (from bottom tip of the massive lamp
>>bulb). I positioned the probe on the printing surface looking up
>>at the lamp. I then commenced the attempt to calibrate the
>>integrator for this light source. No good. No matter where I set
>>the probe dial (you rotate it back and forth to let more or less
>>light reach the photo cell itself), the read-out numbers raced by
>>like Seabiscuit. The numbers ran from 00.0 to 99.9 (or 000 to 999)
>>in about a minute and a half. The manual says nothing about the
>>capacity of the integrator to handle any particular maximum of
>>light. Comments? -jeff buckels
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