980 DP Video Generator - User Guide Rev. A4
Page 339 July 14, 2014
11.140 PulseBar
11.140.1 Description
This image is intended for TV formats, but can be displayed with any format up to 100
MHz. The image looks like two vertical lines followed by a wide vertical bar on a display’s screen. The first line is a
sine-squared modulated pulse that fades from black to red and back to black. The pulse is 20 T for PAL and 12.5 T
for NTSC formats. The second narrower line is a 2 T white sine-squared pulse. T = 100 nSec for PAL and 125
nSec for NTSC formats. The wide bar is white with sine-squared edges.
11.140.2 Test
Video system testing.
This multi-purpose pattern can be used with other instruments to check television K factors. The modulated pulse
can be used to check
chrominance-to-luminance
delay and gain. The narrow white line can be used to measure
short term linear distortion (K2T).
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