Tektronix WFM 601A, Service Manual, Page: 47 / 368

Operating Information
WFM 601A, WFM 601E, & WFM 601M Service Manual
2–11
MULTIPLE. Allows two display modes to be active at the same time. The
Waveform or Parade can be displayed with either Vector, Lightning, or Diamond.
PICTURE. Displays the video signal source. When Line Select is on, the selected
line is highlighted to identify where it is in the video picture.
BOWTIE.
Displays a bowtie test signal to determine timing differences between
the three component signals, Y, P
b
, and P
r
. The external video source must
generate a Bowtie test signal.
DGTL WFM.
Displays the digital word values as a waveform. The data values are
not interpolated to generate the waveform (WFM 601M).
DGTL LIST. Displays the sequential data values in a list. Data may be in linear
data sequence or as groups of four values as they appear in the multiplexed data
stream: C
B
, Y, C
R
, Y’ (WFM 601M).
ANALOG AUDIO.
Displays the stereo analog audio input as a Lissajous pattern.
The size of the opening in the pattern is relative to the phase error between the X
and Y audio channels. (WFM 601A)
Turns on or off CH 1 (Y/R), CH 2 (P
B
/G), and CH 3 (P
R
/B) and selects the
SERIAL A or B digital signal input. At least one input and one channel are
always on.
Selects the waveform monitor sweep rate (LINE/FIELD) and horizontal
magnification (MAG). This area includes two buttons:
LINE / FIELD. Toggles through four sweep rates: 1-Line (5
m
s/div), 2-Line
(10
m
s/division), 1-Field, and 2-Field. Selections are limited in some display
modes.
MAG.
Provides horizontal magnification of waveform signals. Use the Horizontal
Position bezel knob to move left or right on through the waveform.
VIDEO IN
SWEEP