Panasonic WJ-SX550A Operating Instructions Manual page 29

4. VS/VD Input Connector (VS/VD IN)
Either the VD (Vertical Drive) pulse or the VS (Video, Sync) signal can be supplied to this connector for synchronizing the sys-
tem.
Notes:
1. This input is a looping through connection to the VS/VD Output Connector.
2. When the VD (or VS) signal is supplied to the VS/VD Input Connector, turn the VD/VS selection switch (SW4) on the circuit
board to the VD (or VS) position. Initially, the VD/VS selection switch (SW4) is set to the VS position at the factory. Ask
qualified service personnel about setting up this switch.
3. The external sync signal should meet with EIA RS-170 specifications and should not contain any jitter, such as a VTR
playback signal.
5. VS/VD Output Connector (VS/VD OUT)
Either the VD (Vertical Drive) pulse or the VS (Video, Sync) signal is provided at this connector for synchronizing other system
components.
Note: This output is a looping through output of the VS/VD Input Connector. These inputs and outputs are connected internal-
ly.
6. VD Output Connector (VD OUT)
3
The VD (Vertical Drive) pulse is provided at this connector for synchronizing other system components.
Notes:
1. The internal VD pulse or the looping-through external VD pulse will be provided at this connector.
2. When the VS signal is supplied to the VS/VD Input Connector, the VD output signal from the VD Output Connector will be
delayed by approximately 15 µsec with respect to the V-sync of VS input signal.
By changing the position of jumper connector (CN14) on the board, this connector can be used as the monitor output for the
system status display. (Set Up Menu is displayed during Set up mode.)
This board should be installed in the WJ-SX550A Matrix Switcher even if the WJ-AD550
Extension Unit is used.
VS input signal
VD output signal
Caution
3H V
approx. 15 µsec
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