if you are experiencing usb ground loop noise in your setup with TX–6, use the gnd setting to turn usb charging on or off.
- hold shift and tap select.
- turn select to find 'gnd' and tap select to access the setting.
- turn select to toggle usb ground isolation on / off.
when this mode is active, the battery charger is turned off.
you can also use an external ground loop isolator, such as this one:
additional TX–6 resources: