Sherbourn Technologies PT-7010A - Manual (Page 13)

13
Connection Tips for Video Quality
and Flexibility
The Sherbourn PT-7010A has three types of video
connections on board:
What is Composite Video?
Composite video signals are connected between products
with a single 75-ohm coax cable with Yellow RCA
connectors on each end. Composite video inputs or outputs
are present on almost all types of consumer grade video
equipment. Composite video signals can also be modulated
onto an RF carrier, along with an audio signal, and
transmitted over-the-air or on coax cable, by broadcast
stations and cable TV systems. RF video signal cables are
usually 75-ohm coax terminated with screw-on F-
connectors. That’s what your cable TV wiring is if you
have standard (non digital) cable services.
Picture Quality: Good. This is the lowest quality cable for
a video source, but again, it is also the most common.
What is S-Video?
Most midrange and premium video equipment provide the
option of using S-video connections. The S-video (or Y/
C) cable is terminated at each end with a four-pin DIN
connector. Although it may appear to be a single cable,
internally it has two 75-ohm coax or twisted pair cables to
carry the separate Y (luminance) and C (chrominance)
signals. Picture Quality: Better. The S-video cable will
offer marked improvement over a composite cable.
What is Component Video?
Component cables look just like composite cables. The
difference is that, where a composite cable carries the entire
video signal on a single cable, component cables split the
signal in three. The signal itself is referred to as either
Y,Cr,Cb, or Y,Pb,Pr. Manufacturers make connecting these
cables easy by color coordinating them. The tips of the
cables and jacks will be red, green and blue. A good rule
of thumb is that, if the connections are RCA type, it is
usually a component cable. Most high-end DVD players
and HDTV tuners will have component connections.
Picture Quality: Best. This connection gives a superior
image over Composite or S-Video connections.
Video Up Conversion
The Sherbourn PT-7010A has advanced video DSP
circuitry and coding which allows the ultimate flexibility
in video signal processing. With these attributes, the PT-
7010A can easily allow the following:
a) Up conversion from Composite Video inputs to S-
Video and Component Video outputs.
b) Up conversion from S-Video inputs to Component
Video outputs.
c) Down conversion from S-Video inputs to the MON2
video output jack.
This flexibility in video conversion allows the PT-7010A
to switch ALL of your video sources, regardless of type,
making it an ideal central video signal controller. The PT-
7010A can also switch HDTV signals.
Example: - Typically you will connect your video display
(Television or Projector) to the Component Video outputs
of the PT-7010A. With the up conversion capability any of
the video sources using Composite Video or S-Video inputs
would automatically be converted to Component Video.
Keep in mind that it is ALWAYS preferable to use the best
type of input you have available, so if Component Video is
not available on the video source component and you can
choose between Composite Video or S-Video, choose S-
Video.
One final note about the video switching on the PT-7010A
is that there are no video input capabilities for the Tuner,
Tape, or Phono sources, so the video output will remain
on the last selected video source until another input with
video source capabilities is selected.
Video Output to the Main Screen and OSD
When an audio/video component is selected, the audio
will play in your system and the video will be switched to
a video input of your TV monitor. You must have the TV
connected in order to see the On Screen Display (OSD).
Zone Specific Turn-On Triggers
The “Main Zone” and “Zone 2” trigger terminals each
supply 12 VDC whenever that zone is turned on. This can
be used to turn on power amplifiers equipped with a 12 V
trigger input. The two middle terminals marked as relay
contacts are connected together only when the Main Zone
is on and an input is selected for which the trigger output
is enabled. The OSD INPUTS Menu can be used to select
which inputs have the trigger output enabled or disabled
Use all standard safety precautions and make sure all the
equipment is disconnected before making any connections.
balanced outputs instead of RCA type patch cords.
Balanced signal transmission between audio components
provides superior rejection of hum and noise, especially
if long cables are required.
See the two connection options on the next page.