Location and availability

• Menu: Service > Calibration > Electronic convergence
• Access level: all
• Model: UDX, UDM, Njord, Hodr

About convergence

Convergence alignment of the red, green and blue can drift due to multiple reasons. There are two ways to compensate for this drift:

• Mechanical convergence, must be done by a certified technician.
• Electronic convergence, for quick and minor adjustments by taking pixels out of the total resolution.

Note: Electronic convergence can only be used to align up to two pixels in each direction in increments of one pixel. For a more refined convergence method, use the mechanical convergence instead.

For more info on the mechanical convergence, consult the service manual of the projector.

About the convergence test pattern

The convergence test pattern consists of horizontal and vertical center lines, as well as two diagonal lines. It features three red arrows numbered 1 to 3, and three green arrows numbered 4 to 6. These numbers and colors correspond to the extended control knobs found on the light processor of the projector. The direction of each arrow indicates the movement of the channel color (red or green) when turning the corresponding control knob in the direction indicated by the arrow on the knob.

Note: Depending on the projector model the convergence test pattern may be slightly different, but the principle remains the same.

Layout

How to adjust convergence electronically

1. Project the desired convergence test pattern.

   The following convergence test patterns are available:

   • Convergence
   • Convergence-Green-Blue
   • Convergence-Red-Blue
   • Convergence Red-Green-Blue
2. Click the arrow buttons of the desired color (red/green/blue) to raise or lower the value and confirm.

3. Repeat the previous step until the desired alignment is achieved. Change convergence test patterns to get a more accurate view of each projected color.

   

   Note: The desired alignment is when red, green and blue are on one aligned line in each direction.