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Operator’s Checkout Procedure
2-18
1740A/1750A Series Waveform/Vector Monitor User Manual
Select F+L+C (FLAT plus LUM plus CHROM). The display is
similar to the
F+L display, with the chrominance-filtered
signal added on the right.
Select
DIFF. Select the generator 5-step staircase signal. The
differentiated-step filtered display appears similar to
Figure 2-9.
Select
R --- Y. This provides a demodulated chrominance-ver-
sus-time display. Use the right bezel control to adjust vector
phase. See Figure 2-10.
Select
S CH R --- Y (1750A only). This provides a demodulated
SC/H sync-locked oscillator display, useful for viewing SC/H
variations versus time. A sample NTSC display is shown in
Figure 2-11. NTSC signals can be viewed in either line or
field sweeps. For PAL applications, view the signal i n
two-field sweep (see Figure 2-12). Use the right bezel control
to adjust vector phase.
Exit the
FILTER menu. Enter the menu again and note that the
filter selections are unchanged. Select
FLA T. Exit the menu.
10S/DIV
FLAT
LUM
CHROM
DIFF
R--Y
SCH R--Y
F+L
F+L+C
Figure 2-9. Two-Line DIFF filter display of 5-step staircase signal.