NewTek 3Play 820 - Manual (Page 34)

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Hint: If your equipment supports SDI, this is your best quality I/O option.
b. Component – Attach the appropriate BNC connectors from your sources to all
three analog BNC connectors (labeled Y, Pb and Pr) in each column in the Video
In group.
c. Y/C – If your S-Video equipment and cabling has the usual 4-pin mini-DIN
connectors, you will need an S-Video to dual BNC adapter. To connect Y/C
sources, attach the Y (luma) connector of your source to the second analog
BNC connector (labeled Pb). Attach the source’s C (chroma) connector to the
bottom connector (labeled Pr).
d. Composite - Attach the composite source’s connector (may require an RCA to
BNC adapter) to the second connector (labeled Y).
Note: The video broadcast standard (such as NTSC, NTSC-J or PAL) of all video sources connected
for a given session must be the same.
2. To input analog audio along with the video, connect the external audio sources to the
XLR or ¼” connectors in the Audio In group box. Two connectors, labeled “a” and “b”,
are provided for each input group. We’ll discuss audio Connection Type options a bit
later, in Section 3.11.
Digital Audio Note: To connect AES/EBU (a.k.a, AES3) audio source, use the BNC connectors in the
Digital Audio (AES) section. SDI video sources with embedded audio do not need a separate audio
connection.
3.4.2 GENLOCK CONNECTION
The Genlock input on 3Play’s backplate is for connection of a ‘house sync’ or reference signal
(often a ‘black burst’ signal intended specifically for this purpose).
Many studios use this method to synchronize equipment in the video chain. Genlocking is
commonplace in higher-end production environments, and genlock connections are usually
found on professional gear.