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 2.GQ Geiger Muller Counter
 GMC 800 Fast Estimate "Dynamic" setting

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bzzz Posted - 06/02/2024 : 15:15:32
New member here. I just bought the GQ GMC 800 (for fun, mostly) and am trying it out. I have some familiarity with the general concepts involved but am by no means an expert.

One question:
1) In the Menu area there is a "Fast Estimate" setting called "Dynamic". If possible I would like to hear an explanation of how that setting works. (The other choices are 60 seconds, 30 seconds, 20 seconds, 15 seconds, etc.)

Thanks!

(post edited to reduce size)
2   L A T E S T    R E P L I E S    (Newest First)
Tony81269 Posted - 09/23/2024 : 19:36:42
quote:
Originally posted by EmfDev

CPM = Counts per minute. 1 minute = 60 seconds.
fast estimate settings:
60 seconds = uses a 60-second window to calculate the CPM. So it would take a whole minute to get an accurate reading.
30 seconds. uses a 30 second window to estimate CPM. so it takes last 30 second reading and multiply by 2.
same as 20,15,etc. just different multiplier.
Dynamic = detects if there is a significant change of incoming counts so that it uses a faster estimate time to get CPM. usually starts at 3 seconds. this window then slowly increases as long as it does not detect any significant change in counts to get a more accurate readings.


I recently found that I had problems with the dynamic setting while trying to read really low dose. There was too much variation and I couldn't get a good survey. I put it in 60 seconds and it gave me confidence in what I was reading
EmfDev Posted - 06/05/2024 : 11:27:51
CPM = Counts per minute. 1 minute = 60 seconds.
fast estimate settings:
60 seconds = uses a 60-second window to calculate the CPM. So it would take a whole minute to get an accurate reading.
30 seconds. uses a 30 second window to estimate CPM. so it takes last 30 second reading and multiply by 2.
same as 20,15,etc. just different multiplier.
Dynamic = detects if there is a significant change of incoming counts so that it uses a faster estimate time to get CPM. usually starts at 3 seconds. this window then slowly increases as long as it does not detect any significant change in counts to get a more accurate readings.

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