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15
Figure 10: Restoring Black Burst and Image Stability
9.4 Transcoding Various Sync Formats
Transcoding between various video sync formats can be performed by the SG-7, as described in Figure 11.
Perform the following steps (as necessary):
1) Connect a composite sync source to the
C Sync In
BNC connector of
CHANNEL 1.
If looping is not
needed, switch the termination switch to "
75ohm
" position.
2) Connect TTL level H & V syncs into the inputs of
CHANNEL 2
.
3) Connect ANALOG H & V syncs into the inputs of
CHANNEL 3.
If looping is not needed, switch the
termination switch to "
75ohm
" position.
4) Connect all acceptors to the appropriate outputs. All channels can be operated simultaneously.
Channel 3
has two outputs:
CS OUT1
is analog only and
CS OUT2
is TTL level but can be
converted to analog by loading this output with 75ohm load. Cross linking between inputs and outputs
is allowed, however some delay will be created due to the long processing chain.
5) Operate source, acceptors and the SG-7.