Cobalt Networks 9084 manual Applying Correction to Example Monitor Waveform Signal

3 Color and Video Correction Examples Using the 9084

Corrected

Offset

(Left) Noting that the uncompensated black offset for the blue channel is negative, a correspondingly equivalent positive setting is applied using the blue channel Black offset control (in this example, adjusting the Black offset from unity to 5.0 provides compensation).

(Right) Noting that the uncompensated blue Gain exceeds ideal 100% level, a correspondingly smaller gain percentage setting is applied using the blue channel Gain control until the gain is observed as 100% (in this example, adjusting blue Gain from unity to 87.5% provides compensation).

FA-3A.PNG

Uncompensated

Gain

Corrected

Gain

FA-3B.PNG

Uncompensated black Offset

Uncompensated

Gamma

Corrected Gamma

(Left) Noting that the uncompensated blue Gamma curve indicates gamma factor is less than ideal 1.000, a correspondingly greater numeric gamma factor is applied using the blue channel Gamma control until the blue gamma function is observed as linear (in this example, adjusting blue Gamma from unity to 3.333 provides compensation).

FA-3C.PNG

(Left) Compensated Offset, Gain, and Gamma are now symmetrical across all three color channels, resulting in proper monitor appearance in the OTA feed.

FA-3E.PNG

Figure 3-12 Applying Correction to Example Monitor Waveform Signal

3-30 9084 PRODUCT MANUAL 9084-OM (V4.0)