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Any DIY method of checking a meters accuracy?

post #1 of 8
Thread Starter 
Have a 4 year old OTC-100 that has seen very little use and has never been calibrated.
Is there a way to determine the meters accuracy or lack there of other than sending it in for calibration?

Thank
TL
post #2 of 8
See this thread
post #3 of 8
Quote:
Originally Posted by trans_lux View Post

Have a 4 year old OTC-100 that has seen very little use and has never been calibrated.
Is there a way to determine the meters accuracy or lack there of other than sending it in for calibration?

Thank
TL

Unfortunately without some kind of known reference there is no way to test it. Being that the Sencore OTC-1000/X-Rite Hubble is a colorimeter, each table needs to be checked on the specific type of display.
post #4 of 8
Thread Starter 
Wow that's quite the thread!
I think I'll buy a new meter smile.gif
post #5 of 8
I quick gut check might be to measure the color temperature of mid day sunlight. It should be close to 6500K.
post #6 of 8
I think most of us have pondered the "how can I be sure"
question about our meters.

other than getting a reference meter or sending the meter off
I have not read of a DIY method that can tell you.

I suggested a DIY get together here is SoCal but had no takers.
post #7 of 8
Quote:
Originally Posted by dschlic1 View Post

I quick gut check might be to measure the color temperature of mid day sunlight. It should be close to 6500K.

IIRC, D65 (which is what you want to check for rather than 6500K, which can range from a green to a magenta tint) was said to be closest to sunlight at midday on a snow-covered winter day. Sunlight most other times of the year is roughly 5400-5500K. Because it isn't a precise reference, I'd hesitate to use it to validate a meter, even as a quick check .
Edited by Rolls-Royce - 2/10/14 at 2:55pm
post #8 of 8
thinking I'd rather look at a luminous yellow tinge on mine than green or magenta,but it's probably different for every tv..Some site says if you stare at the clouds(at the right time) on a sunny day, and then you could try and make the Tvs grayscale/white the same color of the clouds.Supposedly staring at clouds resets the eyes too the right color temperature.Never tried it as I always thought staring into bright light made them less accurate.
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