All Forums  GQ Electronics Forums  2.GQ Geiger Muller Counter  Sudden Unstable Readings

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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by jadongreen[/i] [br]Hi everyone, I’m a regular user of GQ Geiger counters and have been using them for both hobby and basic environmental monitoring for some time. My main unit is a GQ GMC-320+, firmware updated to the latest available version, mostly used for background radiation checks indoors and occasional outdoor measurements. I usually log data via USB to a Windows PC, with default CPM and µSv/h settings, and the device has always been reliable until recently. Over the past few days, I’ve started noticing a few issues. First, the readings have become unstable, showing sudden spikes even when the counter is stationary in a low-background area where values were previously consistent. Second, the USB connection intermittently drops, causing the data logging software to disconnect unless I reconnect the cable or restart the device. I’ve tried resetting the unit, using a different USB cable and port, and running it on battery only, but the problem persists. Has anyone experienced similar behavior with the GMC-320+ or other GQ models? I’d really appreciate any advice on whether this could be a sensor issue, firmware-related, or something else I should check before considering repair or replacement. Thanks in advance for your help. [/quote]    Insert an Image File Check here to include your profile signature.