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Reference
WFM 601A, WFM 601E & WFM 601M User Manual
3–39
Line Select
The Line Select menu lets you select the part of the extracted video signal to
display and measure. You can select one line, 15 lines, or a single sample on any
line in any field. The selected part is indicated on the MON OUT signals as
highlighted video.
A readout in the upper left of the CRT indicates the currently selected field, line,
and sample. For example, the display F1:22, SMP1441 means that field 1, line 22
and sample 1441 is selected. In 15 H mode, starting and ending line numbers are
given. In 525 line standard with field 2 selected, sequential line numbers appear
in parenthesis.
To set the Line Select mode, press the LIN SEL MENU button. The Line Select
menu appears offering control selections. Bezel knobs are assigned to select line
number and sample (in SAMPLE mode).
The bezel buttons FIELD and NEXT FIELD select the field from which the
selected line/sample is taken. Selecting ALL displays the same line number from
both fields in a frame. The “1 of 2” selection lets you choose a line from only one
field in a frame. Press the NEXT FIELD button repeatedly to cycle through the
fields in a frame.
The second bezel button allows selection of 1H, 15H, and SAMPLE
(WFM 601M only) display modes. In 1H mode, select a single horizontal line
from anywhere in a frame. On the output monitor, the single selected line will be
highlighted. When the selected line is near the top or bottom of the frame, the
output monitor signal shifts to show the vertical sync region.
In the 15H mode you select a range of lines using the bezel knob. On the output
monitor, a band of lines is highlighted. The output monitor signal does not shift
as with the 1H and SAMPLE modes.
In the SAMPLE mode, select a horizontal line and a specific sample on that line.
In the Waveform and Parade Displays, a rectangular marker or “blivit” shows the
selected sample on the waveform. On the output monitor, highlighted horizontal
and vertical lines intersect at the selected sample. In the SAMPLE mode, the
output monitor display shifts to show the sync region when your selection
approaches either end of a line or field. Selections in the sample mode are
correlated across most display modes, such as Digital Waveform, Digital Data,
Parade, and Waveform display. For example, you can align the blivit to the SAV
sample in the Parade mode, then switch to the Digital Waveform mode and see
the SAV value in the data stream.
Field Selection
Line or Sample Selection