[Pavan Dave]

Originally Posted by IFIRobotics 884 Users Manual

The Victor is pre-calibrated to values compatible with an
IFI Control System and re-calibration is not needed.
You can re-calibrate to achieve ‘full forward/reverse’
from your joystick movement if necessary.
NOTE: While in calibration mode, the Victor will
record the max PWM value detected as ‘full forward’,
the min PWM value as ‘full reverse’, and ‘neutral’ will
be the PWM value recorded at the release of the Cal
button. The following steps will guide.
User Calibration:
1. Power ON the speed controller.
2. Press and hold the Cal button. After a moment, the
LED indicator on the Victor will begin alternating
between RED and GREEN to indicate a cal mode.
3. While continuing to hold the Cal button, move the
joystick to the maximum and minimum positions.
This can be done in any order and as many times as
desired.
4. While continuing to hold the Cal button, return the
joystick to center (neutral position).
5. Release the Cal button.
6. A flashing GREEN indicator confirms a successful
calibration.
7. A flashing RED indicator denotes an unsuccessful
calibration.
An unsuccessful calibration occurs when either:
a) Insufficient joystick travel was detected in forward
and/or reverse.
b) The trim tab is too far from center.
Resetting Calibration to Factory Pre-calibration:
1. Power OFF the speed controller.
2. Press and hold the Cal button.
3. While continuing to hold the Cal button, Power ON
the speed controller.
4. A flashing GREEN indicator denotes calibration is
reset. Release the Cal button.

Located Here.

Pavan.