802BT/802R Video Test Generator User Guide 143
• Select PIXEL to generate and receive pseudo-random noise at every pixel within
the whole frame.
• Select ACTIVE PIXEL to generate and receive pseudo-random noise only at active
pixels within the frame.
8. Using the Format knob, select the Parameters field.
9. Using the Image knob, specify how you want the pseudo-random noise seed and
sequence length implemented, as follows:
• Select AUTO to use the default seed value and sequence length. The default
settings ensure a stable, pseudo-random noise image. If you select this setting,
proceed to step 11.
• Select MANUAL to define specific seed value and sequence length settings. If you
select this setting, proceed to step 10.
Note: If the HDMI/DVI signal source is external (Auto Based On field set to
MEASURED), you cannot manually define these settings. The Parameters and Seed
Value( Hex) fields appear dimm ed , an d the Run Length(Hex) field is set when
measuring the external signal’s timing parameters (see “Setting up analyzer to
measure timing” on page 114).
10. If you set the Parameters field to MANUAL, define specific settings for pseudo-random
noise seed and sequence length by following these steps:
a. Using the Format knob, select the Seed Value(Hex) field.
b. Specify the desired seed value using the cursor (displayed under a digit in the field)
to select the appropriate value as follows:
• To move the cursor between digits, press the R and G keys.
• To select a number for a digit, turn the Image knob.
c. Using the Format knob, select either the Run-Length(Hex) or Run-Length(Dec)
field.
d. Specify the desired sequence length value in hexidecimal (if Run-Length(Hex)
field is highlighted) or decimal (if Run-Length(Dec) field is highlighted) using the
cursor (displayed under a digit in the field) to select the appropriate value as
follows:
• To move the cursor between digits, use the R and G keys.
• To select a number for a digit, use the Image knob.
11. Using the Format knob, select the Procedure field.
12. Using the Image knob, select the sequence type for pseudo-random noise to be
generated and tested as follows:
• Select CONTINUOUS to run the pseudo-random noise sequence continuously.
• Select SINGLE SHOT to run one sequence of pseudo-random noise.