ROTEL RSP985 - Handbuch (Seite 14)

14 RSP-985 Surround Sound Processor
ENTER Button (remote only)
This button is used to activate a choice on the
ON-SCREEN MENU system. For example, you
might select an option to take you to another
menu using the DOWN/UP buttons and then
press ENTER to execute the command. See
below for more information on these menus.
Back Button (remote only)
The BACK button is used to cancel a selec-
tion on an ON-SCREEN MENU and return to
the previous menu.
Rear Panel Input
Connections
This section of the manual provides informa-
tion on the audio and video signal input con-
nections on the rear panel of the RSP-985.
NOTE : DO NOT plug any system component
into an AC source until system hookup is com-
plete and you are confident that all compo-
nent-to-component connections have been
properly made.
All video cables should have a 75 ohm
impedance rating. Although conventional
audio interconnects will pass a video signal,
their construction and limited bandwidth im-
pose a performance penalty because, in part,
they do not adhere to the 75 ohm standard.
The S/PDIF digital audio interface standard
specifies a 75 ohm transmission line and all
good digital cables adhere to this requirement.
Because the video and S/PDIF standards are
so close, you can use a video cable for digi-
tal audio data transmission. We strongly ad-
vise that you NOT substitute a conventional
analog audio interconnect cable for either
digital or video.
RCA Audio and Video Inputs
Six sets of RCA inputs (CD, TUNER, VIDEO
1, VIDEO 2, VIDEO 3, and VIDEO 4) accept
line level audio and composite video signals
from source components. All six sets of inputs
accept left and right channel audio plus a video
signal.
All RCA-type connections on the
RSP-985 follow these standard color
codes:
Left channel audio: RCA jack with white inset
Right channel audio: RCA jack with red inset
Composite video: RCA jack with yellow inset
Connect the OUTPUTS of your source com-
ponents to the appropriate INPUTS on the
RSP-985. For example, if your system includes
a CD player, connect its left and right chan-
nel analog outputs to the RSP-985’s CD inputs.
To hookup a video source, connect its ana-
log audio outputs to one pair of the RSP-985’s
VIDEO audio inputs and its video composite
RCA output to the corresponding composite
RCA video input.
S-Video Source Inputs
See Figure 6
These mini-DIN inputs allow the RSP-985 to
receive S-Video signals from appropriately-
equipped source components as an alterna-
tive to the standard RCA video inputs described
above.
If you opt for S-Video connections, remember
that long S-Video cable runs can cause sig-
nificant signal degradation. In some difficult
system configurations, composite connections
may actually be preferable. In all cases, keep
your cables as short as possible to insure the
best performance.
NOTE
: You may not get the best signal from a
Laser Disc player by using the S-Video out-
put. Because the format is older, LD players
add a circuit to separate the luminance (black
and white) from the chrominance (color) in-
formation that make up the complete video
signal. This extra circuitry may actually de-
grade the apparent resolution of an LD
player’s S-Video output. Experiment to deter-
mine which output provides a sharper pic-
ture in your system.
S-Video hookup is straightforward. Simply
connect the S-Video output of each video source
component to the appropriate S-Video input
on the back panel of the RSP-985 in place of
the RCA composite video connections. Remem-
ber that you will still need to use the RCA-type
connections for the audio signals from each
source component.
When connecting video source components,
make sure that all audio and video signals from
one component connect to the same set of in-
puts on the RSP-985. For example, if you con-
nect your VCR to the VIDEO 2 inputs, make
sure that both the audio and video signals
are connected to the VIDEO 2 inputs.
Digital Audio Inputs
The RSP-985 features a complete decoding
and D/A conversion capability which accepts
digital input signals from source components.
These include digital signals from CD players
(44.1kHz sampling rate), satellite TV tuners
(32kHz sampling rate), and 5.1 channel Dolby
Digital and DTS signals from DVD and Laser
Disc players (32kHz to 48kHz sampling rate).
The digital circuitry senses the incoming sig-
nal type and adjusts to it automatically.
To take full advantage of various digital sources,
the RSP-985 accepts digital signals from source
components in two different formats. The digital
inputs are as follows:
OPTICAL: Allows connection of a standard
optical digital output from a digital TV tuner,
DVD player, or other source component. Re-
quires an optical digital cable. Optical digi-
tal inputs are available on the back panel for
the TUNER input and the VIDEO 4 input.
COAXIAL: Standard digital connectors for
use with the digital output of any component.
Coax digital connectors are available for the
CD, VIDEO 1, VIDEO 2, and VIDEO 3 inputs.
NOTE
: To connect a Laser Disc player’s AC-3
RF output connection, you must use an exter-
nal RF demodulator to convert the RF-modu-
lated AC-3 signal to a conventional digital
signal which is then connected to the
RSP-985’s coax digital input.
To use the digital inputs, connect the appro-
priate cable from the digital output of your
source component to the corresponding digi-
tal input on the RSP-985.
It is necessary to configure each source to use
the desired input (digital or analog). This con-
figuration is done using the ON-SCREEN
MENU system and is memorized so that sim-
ply selecting a SOURCE INPUT button activates
the appropriate audio input.