Tektronix 1740A/1750A - Manual (Page 62)

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.