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Reference
WFM 601A, WFM 601E & WFM 601M User Manual
3–5
Bowtie Display
The Bowtie display evaluates the relative amplitude and timing between the three
video channels. This display requires a special test signal from the monitored
source. See Figure 3–8. The Tektronix TG 2000 Waveform Generator can
produce a bowtie signal with 20 ns time marks, which aid in signal evaluation.
The signal is a 500 kHz sinewave on CH 1 (luminance) and 502 kHz sine waves
on CH 2 (Pb) and CH 3 (Pr).
The display is made up of two separate waveforms as shown in Figure 3–8. The
left waveform always compares CH 1 to CH 2. The right waveform always
compares CH 1 to CH 3.
Figure 3–8: Typical Bowtie display on the waveform monitor