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If the video sources you want to return to your remote
Skype callers depend on SDI cabling, connect one or more
return sources as necessary to BNC connectors SDI IN (if
you are connecting NDI video sources, you can skip this
part).
Note: The broadcast video standard (NTSC or PAL) of all video
sources connected must match.
Of course SDI sources can supply embedded audio for use
with the Skype return as well. If you prefer to supply
analog audio to accompany return video, connect the
desired audio source to one or both of the XLR connectors
labeled in the Audio In group.
NDI™ (NETWORK DEVICE INTERFACE)
NewTek’s novel NDI protocol means that, assuming your
other studio gear also supports NDI, all of your incoming (for
return to caller) and outgoing (sent to the studio) audio and video needs can be supplied using a
shared (gigabit or better) network connection. All you need to do is connect an Ethernet cable from
TalkShow to the local network.
This is, of course, the ideal solution – especially when multiple channels or even multiple Talkshow
units are involved. For more information on NDI and implementing NewTek’s Advanced IP
Workflow (including a number of very useful free NDI utilities), visit www.NDI.NeWtek.com.
SECTION 3.5 GENLOCK CONNECTION
The Genlock input on TalkShow’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 typically provided on professional gear.
If your equipment allows you to do so, you should genlock all video sources supplied to TalkShow,
and TalkShow itself. To connect the genlock source, supply the reference signal from the ‘house
sync generator’ to TalkShow’s Genlock connector. (See Appendix B regarding genlock
configuration.)
SECTION 3.6 OUTPUT CONNECTIONS
Next we’ll discuss audio and video output connection options and settings, start with video output.
3.6.1 A/V OUTPUT
TalkShow provides multiple video and audio output connectors, and flexible options for monitoring
your Skype calls. Skype call outputs are always sent to the corresponding rear panel SDI OUT
It’s worth mentioning here that
SDI, while ideal for many purposes,
does nevertheless have some
limitations.
We do not recommend cable runs
exceeding 100 meters (for HD; or
double that for SD). Transmission
over greater distances may result
in signal losses, and call for
measures to boost levels, which
may in turn introduce added
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