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Thread: Run-Time Plot - CMG Infinity Ultra-G

  1. #1
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    If that's the case, how can they claim 20hr runtime. Sometime after the 11th hour on your graph, I would consider it spent. To me at least, if they claim 20 hr runtime, that shouldn't include faintly glowing time as well. It (their ad copy) is very misleading to the public, IMHO. The photocell and graph tell no lies. I can only make that statement based on my exp. with this light as well. I do NOT get 20hr of "useful" runtime with mine. Don't get me wrong, the light is built like a sherman tank, and for that it has its merits, but the specs needs to be more realistic.

    e-

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    What kind of batteries were used for this test?

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    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Everactive Alkaline from Wal Mart are used in all my runtime plots unless otherwise noted.

    Please note that I did not run the plot untill the battery died but stopped it after 16 hours! I have no idea how much longer it would have continued at that low level of output.

    ADDED:

    And I'm not about to get into a discussiion over what is "useable" light output! [img]images/icons/smile.gif[/img]

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    It does look like there's a form of regulation then besides just the step up converter.

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    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Postings in other Forums indicate that CMG says that it is regulated. Here again, defination of "regulated" is open to discussion. I have no idea if the Government model is different or not.

  6. #6

    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    I agree w/ geepondy - that curves shows reasonable regulation. I like the ides of having a fairly even output for a long period of time, suddenly dropping to a much lower level for another long while -wasn't that Arc's "moon mode" concept?

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    It's a pretty good curve. The light would get you thru an entire night at a near steady output. I certainly do not hope to put myself in a situation that would require longer lighting from one battery.

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    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Run-Time Plot - CMG Infinity Ultra-G

    This runtime plot is for the CMG Infinity Ultra - G. At the end of 16 hours it was still generating some light.

    Equipment used is a photocell and a Radio Shack 22-805 multimeter with a PC interface that is using ScopeView software (V 1.08).

    The vertical axis is in MA and the horizontal axis is one hour per division.

    Be aware that your actual battery mileage may vary from that indicated by this runtime plot.


  9. #9

    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    i don't want to start a battery war, but i got over 20 hours of bright light with an energizer.
    you get what you paying for.there is a reason why
    some batteries are more expensive than others.

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    Flashaholic* Wingerr's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    That's true, run time can vary radically with different batteries; still, the chart can give comparative run time characteristics between different lights, since the same battery is being used for all the charting. It would be nice if the standard was a more common brand, but that would take its toll on costs-
    Costco AA's are a good value, and seem to be well regarded as far as capacity.

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    *Retired* The_LED_Museum's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    The only brands I have ready access to are Duracell and Radio Shack. I'll start a test on the Infinity Ultra with a new Duracell today and let it run 'till it poops out.

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    Farewell our Curmudgeon Administrator Roy's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    I actually keep Lithium batteries in my lights!

    Using lithium batteries for runtime testing for all the lights that I have would have cost too much! [img]images/icons/smile.gif[/img] I used the Wal Mart Everactive batteries as I can get 24 AA batteries for $7.97. So far, I've probably used up close to $30 worth of batteries.

    Heck, this morning I found that the plot on the Stylus had crashed in the middle of the night when the battery in the multimeter died! There went a 9v and three AAAA's! Didn't realize how much I had been using it doing these plots. [img]images/icons/grin.gif[/img]

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    I hear ya. I just bought the meter a couple of days ago and I am already tyring to rig up some sorta AC adaptor for it. I don't trust the real cheapie wall warts, so I went to the shack and they have a truly regulated model wall wart for around 20 bucks. Didn't pick it up yet but it might be worth the investment. I just gotta watch my funds lately.

    E=

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Does anyone remember what the run time of the Arc-Finity is?

    Ken

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Originally posted by KenB:
    Does anyone remember what the run time of the Arc-Finity is?

    Ken
    <font size="2" face="Verdana, Arial">How about an educated guess? [img]graemlins/icon15.gif[/img]
    -Only slightly longer than the Ultra-G using the same battery.
    I said that because of brightness equivalency readings when we had the two of 'em together at the same time-using the very same Li-AA batt.
    -not too helpful, right? [img]images/icons/wink.gif[/img]

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    I just now started a run-time test on the Infinity Ultra using a Duracell dated 03-2008. I should have a graph of the results sometime late tomorrow or early Monday.

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    What I think they mean by "useable" is it is usable up to the point at which the beam is no longer able to overpower the amount of light put out by a chemiluminescent microbe on it's last breath of nitrogen in a toxic solution of Hudson River water. When they admit this, AND ONLY when they do, I will believe their statistics. Otherwise, as PT Barnum once said....

    [img]images/icons/grin.gif[/img]
    e-

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Originally posted by The LED Museum:
    I just now started a run-time test on the Infinity Ultra using a Duracell dated 03-2008. I should have a graph of the results sometime late tomorrow or early Monday.
    <font size="2" face="Verdana, Arial">Cool! This will mean we can at least roughly convert Roy's runtimes to yours, plus get an idea of the capacity differences between name brand and off brand batteries!

    Ok. I'm way to excited about this whole graph thing.

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    Flashaholic* RonM's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    If that's the case, how can they claim 20hr runtime. Sometime after the 11th hour on your graph, I would consider it spent.
    <font size="2" face="Verdana, Arial">That's why I was making a cases for establishing a runtime standard based on when the light reached half its initial output. Of course graphs are the most helpful, but sometimes it's just nice to know what the true runtime is.

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Hey Tom,

    I was so excited about it I went and bought the digital meter with the PC interface to do a couple. I wanted to get the SL 4AA LED done right away. I may do some others later.

    When you use a lightmeter as the sensor, you actually get candela output.

    Cheers,

    Richard

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    My test still isn't done, so I just took a picture of the screen around Hour 23 so you get an idea of what the discharge curve will end up looking like.



    I'll probably just let the thing peter out overnight and then take it off tomorrow morning.
    In this shot, the horizontal divisions don't mean anything. The entire plot as shown is just under 23 hours and counting. What better way to spend a birthday than sitting here watching a meter. [img]images/icons/rolleyes.gif[/img]

    Those two black lines at the top of the picture towards the right are the infinity's lanyard. I originally set the equipment up on top of the monitor, then moved it to a shelf higher up and behind it so the monitor's heat wouldn't cause the Infinity's battery to heat up too much and possibly queer the test. So everything's pretty much in the upper 70s, though I have no way of actually *measuring* that. I really need one of those no contact IR thermometers.

    Hmmmm... let's see if I can sneak one by the meter's software. If I can slip a copy of INFULT.ME1 out over the network (the file is open for write, so it may not work), and if my plotting program works on XP, maybe I can get a chart right now! Here goes nothing...

    Dammit. The file copied, but as an empty file of 0 bytes. Guess I have to wait until the instrument finishes, and closes the file before I can do anything with it. [img]images/icons/frown.gif[/img]

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G


    My copy of Photoshop seems to have "broken" (Fatal error 36), so I was forced to use MS-PAINT. No embellishments or fancy text formatting.

    X-divisions are in 1 hour increments, Y-divisions represent relative intensity, with maximum recorded intensity placed at the top of the chart. When the test was stopped at approximately 26:15 in, the Ultra was still bright enough to walk by in close quarters; approximately 1/4 to 1/3 the intensity of an old style white Infinity.

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    Flashaholic* rlhess's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Craig,

    Use that little jack on the bottom of the meterman and you get a scaled output 1mV = 1 count on the meter for whatever scale you're in.

    Another trip to radioshack for the plug! It's a micro phone plug--not a mini.

    Cheers,

    Richard

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    *Retired* The_LED_Museum's Avatar
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Originally posted by rlhess:
    Craig,

    Use that little jack on the bottom of the meterman and you get a scaled output 1mV = 1 count on the meter for whatever scale you're in.

    Another trip to radioshack for the plug! It's a micro phone plug--not a mini.
    <font size="2" face="Verdana, Arial">I'm using a silicon solar cell and a meter set to read a low mA range - same as I've always done. This provides for a repeatable, relative intensity measurement using the recording DMM and a custom auto-ranging plotter I had specially written for me. The benefit here is that I can cover the whole apparatus to shield it from stray light. I don't have enough room here to set up a standard 1' or 1M test distance and have it remain covered and undisturbed for more than an hour or so, or anything to cover that much area from outside influences. I've only got about 30 square feet to work with, and it's FULL. [img]images/icons/rolleyes.gif[/img]

    Also, this setup was made to work with ANY light, regardless of how dim or how bright it is. The graph the machine poops out will always register the maximum recorded intensity at the top of the image. It will also accept an event record from 1 hour long up to 364 hours long.

    The intent here is to plot a completely linear battery discharge curve that will need no adjustments from light to light, and show how the batteries and/or regulator do their jobs. If I need exact numbers, I use a photometer and a ruler. [img]images/icons/smile.gif[/img]

  25. #25
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Am I the only one surprised that the curves are different shapes? Very strange...

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    I'm beginning to think that Roy's battery was funky. I used a Duracell, dated Mar. 2008 which I bought on the "gray market" late last spring.
    I don't have any other brand of AA battery handy at the moment. I have some Grandcell rechargeable alkalines, but I buried the box a few days ago while preparing for the first of three building inspections I have to put up with this week. [img]images/icons/blush.gif[/img]
    But as I understand, rechargeable alkalines can be ruined if you run them completely to the ground as we usually do with this type of test.

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Ok, I've started another plot using another Everactive battery. Should have a new plot tomorrow.

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G



    This new plot was done with the Wal Mart Everactive battery. This is the same brand of alkaline battery that I have used in all the other lights that I've tested which used AA batteries.

    This plot is esentialy the same as the first plot.

    Note that I'm using the US Government model of the Ultra. Could there be a difference in the regulation between models?

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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    Craig:

    Happy Birthday a day late!!!

  30. #30
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    Default Re: Run-Time Plot - CMG Infinity Ultra-G

    HAPPY B-DAY!!!!!! [img]images/icons/smile.gif[/img]

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