Data Sheet

www.dimensionengineering.com/products/Sabertooth2x32
delay (the Calibration Delay setting) the Sabertooth will take whatever voltage level is presented at the
input and use that as its zero speed setting. It will then constantly look for the largest and smallest
voltage that it has ever seen, and use these values as full speed forward and reverse. Automatic
calibration is very helpful for signals such as low-cost joysticks that have significant variability in their
center and end values. The downside to using Automatic calibration is that if the joystick is not in its
center position when the Sabertooth is powered up, or after it loses power for any reason, control will
be incorrect.
Joystick Calibration
With Joystick calibration, only the stopped position is re-learned each time the Sabertooth powers up.
You can manually change the Input Min and Input Max values. This can prevent slow speed creeping if
the joystick does not return exactly to center due to mechanical hysteresis or sticking. Higher quality
joysticks will often have a defined output voltage range, usually 0V to 5V, so automatic calibration of the
endpoints is unnecessary.
Saved Calibration
Saved calibration acts exactly like Automatic calibration the first time the driver is powered up after
selecting this option, but it then reverts to fixed calibration using the settings it has discovered from that
point forward. This is primarily used in production settings, to allow the Sabertooth to learn the specifics
of the joystick or control it is mated to, without having the limitations of automatic calibration.
Exponential-Mode Map
To use different maps, select one of the four maps using the drop-down list. A graphical representation
of the selected map will appear below the channel. Please note that these maps are only used in Analog
mode if DIP switch 5 is set to the OFF position.