HD3G7 HD 3 Gb/s SDI Video Generator module
Table 3-37: HD3G7 module signal sets assigned to the test signal buttons (cont.)
Button name Signals in the signal set Description
PULSE BAR
2T Pulse and Bar
Two pulses of 2T half-amplitude width and full-scale amplitude. A
positive pulse is added to a base level at the minimum valid value,
and a negative pulse is added to a bar level at the maximum valid
value. The 2T pulse is used for Short Time response testing and
the bar is used for Line Time response testing.
Color Pulses Eight color pulses of 2T half-amplitude width upon black and white
backgrounds. The upper half of the pattern has positive pulses on
a black background, testing each c ombination of the three color
channels. The lower half of the pattern has a white background,
so negative pulses are used to result in the same line colors. For
example, the yellow pulse in the upper half is 100% red plus 100%
green, resulting in yellow on a black background. At the same
horizontal location in the lower half, a pulse of −100% blue added
to the white background also results in a yellow line.
TIMING Co-siting Pulse One single-sample wide pulse in the center of the image, used to
show the timing relationship and alignment between chroma and
luma channels. Different amplitudes are used to distinguish the
three channels.
SDI
Equalizer Test
Full-field equalizer test pattern per SMPTE RP 198-1998. This
pattern consists of alternate 10-bit words, 300h and 198h,
regardless of the current sampling structure and format. For
10-bit 4:2:2 YCbCr HD-SDI formats, the Y samples carry the
198h words and the Cb/Cr samples carry the 300h words,
resulting in a magenta-shaded field for this pattern. For other
formats, these s ame 10-bit word values will result in different color
representations. This pattern also includes the polarity control
word, such that the fi rst sample in the active picture in every other
frame is 190h instead of 198h.
PLL Test
Full-field phase-locked loop test pattern per SMPTE RP 198-1998.
This pattern consists of alternate 10-bit words, 200h and 110h,
regardless of the current sampling structure and format. It appears
as a 24% gray field in 10-bit 4:2:2 YCbCr formats, but as different
colors in other formats.
SDI Matrix Matrix pattern, with the equalizer test pattern (300h 198h) in the
upper half of the field and the PLL test pattern (200h 110h) in the
lower half of the field.
OTHER
——
For 3G output formats only. Use this button to select the converter
mode of operation. Press any other test signal button to return
to generator mode operation.(See page 3-162, To select the
Converter mode on the HD3G7 module.)
3–170 TG8000 Multiformat Test Signal Generator User Manual
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