After a pedal has been plugged in while the C15 is running, or after selecting a different pedal preset, most pedal presets require an Auto-Ranging cycle where the available electrical travel produced by the pedal is measured and used for the corner points. Note that until a reasonable range of movement has been detected the pedal will not produce any output signals. The procedure is simple:
After the Auto-Ranging procedure, you might want to check if all is well, that is a) the pedal output spans the whole 0%...100% range and b) that the output characteristic is reasonable, producing about 50% output when the pedal is at around the mechanical middle position. Both checks can be done by watching the pedal’s position bar graph and the corresponding numerical display in the Pedal Editor.
Should you find that the output value at the approximate mechanical center position is way off from the 50% mark, something like 80...90% * or so, then the pedal likely requires a different setup with tip and ring connections swapped. That is, if you see this behavior and have currently selected Pot, Tip-Active
, then select Pot, Ring-Active
, and vice versa. On the other hand, a unique feature of the C15 is that a pedal generally keeps working even when selecting the wrong pin-out, you just get a somewhat skewed characteristic of output values vs. mechanical travel.
* When you are using the reverse readout presets like Pot, Tip-Active, Rev.
, Pot, Ring-Active, Rev.
etc, you will instead get a 10...20% reading for the mechanical center position in case you have accidentally selected the swapped pin-out.
The current internal settings for the Auto-Ranging of a pedal are stored and kept in non-volatile memory so there is no need to run the Auto-Ranging procedure each time the C15 is powered up.
There are several cases, though, when a pedal might not reach the complete 0%...100% span and a reset of the Auto-Ranging will be required:
minimumor
rangecontrol that has been touched, reducing the effective electrical travel.
There are two ways to reset the Auto-Ranging: