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Reference
WFM 601A, WFM 601E & WFM 601M User Manual
3–17
will switch between Y and Y’. The symbol “–>” indicates the currently selected
sample. The offset or broken data cursor seen in Figure 3–15 indicates that the Y’
sample is selected and it is not aligned (nonco-sited) with the C
b
and C
r
channels.
The Y sample is aligned or co-sited with C
b
and C
r
channels and its data cursor
appears in line. Use the Video mode when selecting samples in the active picture
area.
The DATA mode displays the samples in sequence as they are received
(Cb,Y,Cr,Y’). Use the Data mode to view sync words (EAV and SAV) and
ancillary data.
The data cursor creates intersecting horizontal and vertical highlighted (or bright
up) lines on the analog video output to indicate where in the video signal the data
cursor is located. When you move the data cursor to the end of a line, the output
picture shifts to show you the horizontal sync region. Likewise, when you move
to the beginning or end of a frame, the vertical sync region shifts to the center of
the screen. As you scroll through line samples, watch the location of the
highlighted line on the output monitor. By doing so, you can correlate changes in
the video signal with changes in the digital data values. To use the cross-hair
cursor in the horizontal and vertical blanking regions, set EAV–SAV to PASS in
the Configure WFM/VEC menu.
@ 525/2:1
10mS/DIV
LINE SEL SAMPLE
DATA 274 h
F1: 176
SMP 543
ACTIVE
Figure 3–16: Digital Waveform display in DATA mode
Output Monitor Signals