Adjusting The Sync And Subcarrier Phases - Sony DSR-DR1000 Operating Instructions Manual

Adjusting the Sync and Subcarrier Phases

When using two or more players, as in an A/B roll editing
system, it is necessary to synchronize the sync and
subcarrier (for composite signals) phases of the signals to
be edited. If they are not synchronized, picture instabilities
or color break-up may occur at edit points.
This unit (player 1)
UVW-1600/1600P (player 2)
a) The sync and subcarrier phases of the
output signal from the DFS-700A/700AP
switcher are automatically adjusted.
b) Ensure that the 75 Ω coaxial cables (A) and (B) (not
supplied) are of the same length.
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 displays the black burst signal from the switcher.
3
Press the EXT button on the vectorscope.
94
Adjusting the Sync and Subcarrier Phases
After configuring the editing system, use a vectorscope to
adjust the sync and subcarrier phases of the recorder and
players. Subcarrier phase adjustment is necessary when
using composite signals and Y/C signals.
Switcher (DFS-700A/700AP)
75 Ω coaxial cable (A)
75 Ω coaxial cable (B)
PVE-500 Editing Control Unit
This switches the vectorscope to external
synchronization mode.
4
Adjust the phase synchronization control on the
vectorscope so that the sync and subcarrier phases are
close to the reference line.
a)
DSR-1500A/1500AP (recorder)
b)
b)
Vectorscope (Sony Tektronix
1750/1751, etc.)