Lumagen Radiance Mini-3D - Manual (Page 33)

Section 7 – Calibration
Radiance Mini rev 091211 25
•
Set the Lumagen input aspect ratio as 4:3 (1.33) for a 4:3 screen, 16:9 (1.76) for a 16:9 screen,
or 2.35 for a projector with a 2.35 anamorphic lens. The input aspect ratio should be set before
adjusting the overscan.
• Display an “Overscan” test pattern from the selected source.
•
Adjust the input size and position. This selects which pixels are captured. Adjust the top-left corner
of the image first. Then adjust the bottom-right corner. For digital 1080i/p 16:9 sources input size
should only be adjusted if absolutely necessary for 1080p 16:9 screens, so that the scaling will
remain off, which in turn will keep the image as sharp as possible. The command is:
MENU→ Input→ Video Setup→ [Resolution]→ Size→ [Aspect]→ (Crop TopLeft,
Crop BotRGHT)
• Display a “contrast” or a “Needle Pulses” test pattern.
•
Set the black level. Since the Lumagen-to-display levels were set above in the Output Calibration
section, the Lumagen internal input-memory Black level control should be used. This allows
differences between sources to be corrected. Note that many cable and satellite services use
different black levels for standard definition and high-definition sources. Using a Radiance video
processor is one of the few ways you can correct this error. It is recommended that you use a low
average picture level test pattern, which has a black frame with two moving bars (2 and 4 IRE) for
setting black level. The reason is that the black level varies with the average intensity on the
screen for many displays. Since the black level is most critical in dark scenes this will provide the
best setting. The command is:
MENU→ Input→ Video Setup→ [Resolution]→ Picture → Black → OK
• Set the white level (contrast). Since the Lumagen-to-display levels were set above in the Output
Calibration section, the Lumagen internal input-memory Contrast control should be used. The
command is:
MENU→ Input→ Video Setup→ [Resolution]→ Picture→ White → OK
• Display a “Colorbar” test pattern, sometimes referred to as an “SMPTE bar” test pattern.
•
Set Color and Hue and then the Color and Hue offsets for red and green. The display’s Color and
Hue should have been set to default before performing any calibration steps. First set Color and
Hue using the blue colorbar pattern and the blue filter. Next set the red color (Color Red) and
Hue (Hue Red) offsets using the red colorbar pattern and the red filter. Finally set the green color
(Color Green) and Hue (Hue Green) offsets using the green colorbar pattern and the green
filter. The command is:
MENU→ Input→ Video Setup→ [Resolution]→ Picture→ ColorDecoder → OK
•
Display a “Y/C Delay” test pattern.
•
Set Y/C Delay. Use the Lumagen Control to minimize the error in the blue and red timing verses
Luma. The C
B
and C
R
channels are calibrated independently.
MENU → Input → [Resolution] → Picture → YC Delay → OK
•
You may wish to copy the calibrated configuration to all configuration memories as a starting point.
MENU → Input → Copy → OK
•
If desired, change to MemB and repeat the above steps to calibrate for a different amount of room
light.
• Calibrate the other inputs.
•
Name the inputs, if desired. The command is:
MENU → Input → Label → OK
•
Lock the configuration, if desired. The command is:
MENU → Other → Menu Mode→ Locked → OK
• SAVE THE CONFIGURATION
MENU → Save → Save→ OK→ OK