Logic Pro 8, Logic Pro 16, and our Original Logic16 all feature adjustable voltage thresholds, which can be set via the voltage dropdown setting next to the digital sampling rate setting. The 3.3+ Volts setting, for example, will set the voltage threshold to half that value, or 1.65 V. Our other logic analyzer models have a fixed voltage threshold, and therefore do not have this setting. For more information on the voltage setting options and thresholds, see our support article on this below.