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Chapter 4 Setting the Time Code and Adjusting the Video Signals
Chapter 4 Setting the Time Code and Adjusting the Video Signals 65 (GB)
Adjusting the Sync and Subcarrier Phases of the
Video Signals
When you adjust the phases of the video signals,
follow the steps below.
Performing a phase adjustment operation
1 Press the SCH button on the vectorscope.
The vectorscope switches to “SCH” mode.
2 Press the B channel button on the vectorscope.
This selects the black burst signal from the
reference signal generator.
3 Press the EXT button on the vectorscope.
This switches the vectorscope to external
synchronization mode.
Vectorscope with SCH mode
A IN
B IN
B Through
EXT. REF
IN
EXT. REF
Through
Reference
signal generator
DSR-50/50P
VIDEO OUT2
VIDEO/REF.IN
4 Adjust the phase synchronization control on the
vectorscope so that the sync and subcarrier phases
are close to the reference line.
(for NTSC)
Subcarrier
phase
Sync
phase
Reference line
Align the sync and subcarrier phase of the black burst
signal to the reference line.
(for PAL)
Subcarrier
phase
Sync
phase
Reference line
Align the sync phase of the black burst signal to the
reference line.
Align the subcarrier phase of the black burst signal
symmetrically up and down.
(Continued)