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USB Port
The USB port is the standard mini-USB port. It is used for data communication, external
power and the battery charger connection.
Data collection time
The GMC-320 radiation data is collected continuously, and every second the measured data
is being transmitted to the CPU for processing.
Tube recovery time
After detecting high doses of radiation, each Geiger tube needs some time to recover (back
to normal). This may take a couple of minutes. This recovery time is depending on the level
of radiation just experienced and is also tube dependent.. Turning the unit OFF and then
turning ON again after a couple of minutes will reduce the tubes recovery time.
Extend battery operating time
Turn on the Power Saving mode to extend the battery operating time. Turn off the speaker if
it is not necessary. If a fully charged battery run-out in less than 5 operating hours, then the
battery needs to be replaced. Use a standard 14500 (14 x 50.0 mm) 3.6V-3.7V Li battery
OR 14500 (14 x 50.0 mm) 3.6V-3.7V rechargeable Li-ion battery.
The GMC-320 will operate normally when a non-rechargeable battery is installed. Select the
battery type to none rechargeable battery from the unit menu.
Third party software developers
The GMC-320 is an open application protocol product. Users are able to develop their own
software based on the published GQ-RFC1201 protocol. We encourage you to share your
generic software with other users. Please contact
if you have
any questions.
You can find the GQ-RFC1201 protocol at the software download page.
http://www.gqelectronicsllc.com/comersus/store/download.asp
