static QString print_timebase(Glib::VariantBase gvar);
static QString print_vdiv(Glib::VariantBase gvar);
static QString print_voltage_threshold(Glib::VariantBase gvar);
static QString print_timebase(Glib::VariantBase gvar);
static QString print_vdiv(Glib::VariantBase gvar);
static QString print_voltage_threshold(Glib::VariantBase gvar);