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hv freak
Germany
3 Posts |
 Posted - 05/17/2015 : 01:56:19
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Hi all,
i´ve registered here,because i´ve a problem with my gmc-300.
After carging the battery,i turned on the GMC-300,but the display readings are >ImSV..
I read here in the forum:
http://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=4056
that i´ve to calibrate it.
I´ve done it.But my µSv readings are now very high,about 0,5µSv/h
and rapidly changing.(normally 0,1µSv/h)
I can hear a quite clicking,when the GMC-300 is turned on.
I measured the voltage with a Fluke multimeter,184V,with an Oscilloscope,around 350V,Oscilloscope+1Gigaohm resistor 408V.
Can it be the transformer inside,or is the tube damaged?
where can i get this small transformer?
hope you can help me...
best regards
hv freak
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| Reply #1
ZLM
1271 Posts |
Posted - 05/20/2015 : 19:34:46
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You need to do a Factory Reset from menu.
Main Menu -> Init Setup -> Factory Reset.
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| Reply #2
hv freak
Germany
3 Posts |
Posted - 05/26/2015 : 10:58:48
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I´ve done a factory reset,but the readings are very high.
It seems that the tube don´t work correct.I´ll trie to change it against a SIG39,which i´ve here. |
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| Reply #3
ZLM
1271 Posts |
Posted - 05/29/2015 : 23:55:53
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| If your hear the clicks very high, then the tube may be bad. |
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| Reply #4
hv freak
Germany
3 Posts |
Posted - 07/26/2015 : 03:03:06
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| Hi all,the tube really don´t work correct.I´ve bought a new one and done a factory reset.Now the readings are aeround 0,1µSv/h |
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| Reply #5
ZLM
1271 Posts |
Posted - 08/02/2015 : 17:28:27
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| Thanks for the update. |
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GMC-300 problems
