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Using the Menus
1740A/1750A Series Waveform/Vector Monitor User Manual
3-7
menu function is still in effect (LED is lighted), push the
menu button to bring back the full display, then push it again
to exit the menu.
Filter Menu (WAVEFORM Mode Only)
The
FILTER menu is available for WAVEFORM mode only.
Note that the instrument must be in
WAVEFORM mode to ac-
cess the R--Y displays. When the
FILTER button is pushed in
WAVEFORM mode, an on-screen menu allows the following
selections. The bezel buttons are self-cancelling.
H
FLAT — provides flat (normal) response.
H
LUM — provides a low-pass response to display the
luminance portion of the composite video signal.
H
CHROM — provides bandpass response centered on
the chrominance subcarrier frequency, and displays
frequencies around the subcarrier frequency.
H
DIFF — is a differentiated step filter (linearity steps
are translated into impulses for amplitude compari-
son).
H
R--Y — selects demodulated chrominance-versus-
time display. The chrominance is demodulated on
the R--Y (V) axis when burst is lined up on the
normal axis. The
VECTOR PHASE control can adjust
the demodulator phase to any axis.
H
SCH R-- Y (1750A-- Series Only) — demodulates the
SCH sync-locked oscillator. This display is useful
for viewing SCH variations versus time.
H
F+L—displays the video signal both flat and
luminance filtered. The display is in parade or
overlay mode, as selected through the on-screen
menu. When
PARADE is selected, the flat display is
on the left.