Waveform Mode
3- 6
VM700T Option 01 (NTSC) & Option 11 (PAL) User Manual
NOTE
. If you position the left (solid) cursor to the right of the right (dashed)
cursor, you will be measuring the time from one frame to the next.
Reset Cursors
: unlocks the left and right vertical cursors from the waveform,
and positions both at the center of the display. The amplitude reference markers
are also reset, so moving the waveform to the 0% and 100% positions of the
waveform again pushes the amplitude reference markers back to those positions
on the waveform. You can then adjust the cursor on the waveform to the “%
point” (as indicated by the % of waveform readout) between the 0 and 100%
points required for the cursor measurement (for example, 50% or 10% and 90%).
Reset Diffs
: resets the Vertical Delta readout to 0.0 at the current vertical
position. Any subsequent vertical displacement from the knob is displayed. This
capability is useful for measuring signal amplitudes. The horizontal marker line
(across the middle of the active waveform area) provides a useful reference level
to align the waveform for voltage difference measurements.
Cursors Stay On
: keeps the cursor graphics up even when not in the Cursors
submenu. This is useful for keeping up sine-wave measurement results, which
measure the amplitude, frequency, and offset of a sine wave in the center of the
displayed area.
This choice allows selection of Sync source: A, B, C, External or “Locked to
Source” sync mode. Also selects Sound in Sync mode and genlock mode
selection between synchronous, asynchronous, and free-run modes. If incorrectly
set for the input signal, the waveform display may be replaced by the message
“<Loss of sync>”.
Pressing the Sync soft key brings up the following submenu:
Sync A/B/C
: sets the sync source to input channel A, B, or C, and clears
(unhighlights) the Locked to Source soft key.
NOTE
. If the
Locked to Source
soft key is not highlighted, the sync source will
NOT change with changing input selections. The result is erratic behavior if the
relative timing between the two inputs is not close.
External Sync
: sets the sync source to external sync. This input cannot be
displayed or measured.
Locked to Source
: when highlighted, indicates that the sync source and the
input source are the same. Changing the signal source also switches the sync to
the new signal source.
Sync
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