34
NTSC VIDEO OUTPUT
This BNC type connector outputs the time-base corrected version of the video input signal.
GENLOCK OK LED
This LED will light when a valid genlock video signal is connected to the TBC card genlock video input.
MULTI INPUT/OUTPUT (I/O) CONNECTOR
TBC card jumper CHE1 controls the use of this connector. Normally, this connector is used as a loop through for the
genlock video signal. This allows the same genlock signal to be looped to a number of destinations. It may also be used
for an advanced sync output by moving CHE1 to the SYNC position. You can connect the advanced sync output from
this connector to the EXT SYNC input on the playback VCR (if the VCR has this feature). For more information on the
advanced sync see Appendix A of the TBC III manual. The final mode for the multi I/O connector provides a second
time base corrected video output that is identical to the main video output. It is obtained by moving CHE1 to the
VIDEO position.
GENLOCK VIDEO INPUT
The TBC card uses the genlock video input to establish the timing for its video output signal. The signal connected to
this input must always be stable, such as the output from a black burst or color bar generator. DO NOT attempt to use a
non-timebase corrected VCR for your genlock reference. When a valid signal is connected to this input, the video
output of the TBC card will be co-timed (genlocked) to this signal and the rear panel genlock OK will light. When no
external reference is supplied to the genlock input, the TBC card operates using its internal sync generator.
GENLOCK TIMING ADJUSTMENT
The rear panel genlock timing adjustment is only used when the TBC card is installed in an application where it will
not be under serial control. When installing TBC cards into the ES-2200 chassis, the genlock timing is controlled by the
front panel or with the appropriate software via the rear panel DB-9 RS-232 interface.
Figure 4-2: TBC III Card
8 7 6 5 4 3 2 1
INTERNAL SERIAL DATA
CONNECTORS
DHE 4
BSW1
DIP Switches
CHE1
Multi-I/O
Function
CHE2
TX
MT
Serial Data
Transmit Control
TERM
OPEN
Video Out
Adv Sync
Genlock Loop
Genlock Termination
