Specifications

Encoding the 8150 Output (NTSC)
The 8150 processes only component video, so does not provide
composite outputs. If you are operating in the 525-line standard and
need a composite output, you can use the Accom A28 Digital Encoder
to output composite digital and analog video for monitoring, recording,
etc.
Encoding the 8150 output in 625-line environments is outside the scope
of this manual. However, as a general rule, if you are operating in the
625-line standard and need a composite output, you must provide a
suitable encoder. If the encoder requires an external black burst
reference, you must cotime this reference to the 8150 output (i.e., delayed
by 34 lines from the reference to the 8150). One way to do this is to
convert the 8150 output to a component analog signal and use the sync
portion of this signal to genlock a dedicated black burst generator, which
can then provide a suitable composite reference for the encoder.
8150 to A28 Connections
The Accom A28 Digital Encoder requires a composite reference to
provide a properly encoded output. The A28 processes this reference
with one of three option modules: Option F (parallel composite digital
reference, the standard), Option G (composite analog reference and
output), or Option H (serial composite digital reference and output). The
A28 with any of these three options provides a parallel composite digital
output, but Option G gives you two features that the others do not:
Two composite analog (NTSC) video outputs. You can adjust the gain,
black level, and active picture phase from the front menu display.
Horizontal phase and subcarrier phase timing controls for all outputs.
It is recommended that the A28 used for this purpose has Option G
installed for greatest flexibility. Since the standard A28 has only parallel
digital inputs, Option C (the serial component digital input module) is
also required, unless you have another way to deserialize the 8150
output before inputting it to the A28
NOTE: When connected to the 8150, the output timing
delay of the A28 equals that of the 8150. In other words, if
the 8150 output is set to 34 line delay, the A28 output has
that same delay from reference. If the 8150 output is set to
one frame delay, the A28 output is also delayed by one
frame from reference.
Encoding the 8150 Output (NTSC) 8150 Technical Guide
5-84
Engineering Setup
9100-0212-04 - May 2000