Jbl SDP-RFD User Manual
SDP-RFD
AC-3
®
/RF
DEMODULATOR
(120V/230V)
INSTALLATION/
TECHNICAL
MANUAL
2
Unpacking and Inspection
Save all packing materials in case you ever need to ship the unit.Thoroughly inspect the unit and
packing materials for signs of damage. Report any shipment damage to the carrier at once; report
equipment malfunction to your dealer.
Precautions
Save these instructions for later use.
Follow all instructions and warnings marked on the unit.
Always use with the correct line voltage.Refer to the manufacturer’ s oper ating instructions for po wer
requirements. Be advised that different operating voltages may require the use of a different line
cord and/or attachment plug.
Do not install the unit in an unventilated rack, or directly above heat-producing equipment such as
power amplifiers.Observe the maximum ambient operating temperature listed in the product specification.
Slots and openings on the case are provided for ventilation;to ensure reliable operation and prevent
it from overheating, these openings must not be blocked or covered.Never push objects of any kind
through any of the ventilation slots.Never spill a liquid of any kind on the unit.
This product is equipped with a 3-wire grounding type plug.This is a safety feature and should not
be defeated.
To prevent shock or fire hazard, do not expose the unit to rain or moisture, or operate it where it will
be exposed to water.
Do not attempt to operate the unit if it has been dropped, damaged, exposed to liquids, or if it
exhibits a distinct change in performance indicating the need for service.
This unit should only be opened by qualified service personnel. Removing covers will expose you to
hazardous voltages.
This triangle, which appears on your component, alerts you to the presence
of uninsulated, dangerous voltage inside the enclosure...voltage that may be
sufficient to constitute a risk of shock.
This triangle, which appears on your component, alerts you to important operating
and maintenance instructions in this accompanying literature.
Acknowledgements
The SDP Series is manufactured under license from Dolby Laboratories Licensing Corporation.
Additionally licensed under one or more of the following patents: U.S. numbers 3,632,886,
3,746,792 and 3,959,590; Canadian numbers 1,004,603 and 1,037,877. “Dolby” and the double-D
symbol are trademarks of Dolby Laboratories Licensing Corporation.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
3
1.
BASIC OPERATION
Congratulations on your purchase of
the Synthesis SDP-RFD AC-3®/RF
Demodulator. The SDP-RFD AC-3®/RF
Demodulator is designed to interface
between a laser disc player (with an
AC-3
®
/RF Demodulator output), and any
Dolby®Digital decoder which accepts a
standard AC-3®signal (like our SDP-2).
Because “AC-3
®
ready” laser disc players
use a separate Radio Frequency (RF)
modulated output to carry the Dolby
®
Digital information, special considerations must be made. While this type of
transmission works perfectly well, our
engineers were rightfully reluctant to
inject line-level RF directly into the
meticulously designed SDP-2. The solution is the SDP-RFD AC-3
®
/RF
Demodulator.
The SDP-RFD Demodulator keeps
potential RF interference away from the
sensitive preamp/processor stage while
providing highly useful improvements in
AC-3
®
signal quality. By placing the requisite demodulation circuitry in its own
enclosure with dedicated power supplies
and grounding, the potential to degrade
digital-to-analog conversion and analog
audio signals within the preamp/
processor is eliminated.
The SDP-RFD Demodulator incorporates fully automated “intelligent”
switching between S/PDIF and AC3
®
/RF inputs, meaning that any laser
disc will be decoded to its maximum
inherent quality. A low voltage “turn on
trigger” input and output are included
for interconnection to the Synthesis
SDP-2 and S-Series Amplifiers. The
stringently designed outboard power
supply ensures maximum signal purity.
We have designed this manual to provide a brief overview of the demodulator, as well as to provide the information
necessary for safe installation and operation. We trust that the time you invest in reviewing these brief instructions
will be rewarded by the best possible
performance and longevity of your
equipment.
1
INTRODUCTION TO THE SDP-RFD
AC-3®/RF DEMODULATOR
INTRODUCTION
4
NOTE: When power is off, the SDP-RFD AC-3®/RF Demodulator
automatically outputs the COAXial digital input.
LOCK
This LED will light whenever
is present, the LED will rema
POWER
This LED will light whenever power to
the unit is supplied and enabled.
POWER
RF TIMING
LOCK
AC-3®/RF DEMODULATOR
RF TIMING
3-position switch which minimizes
signal errors, providing optimal
timing for specific brands of laser
disc players.
Recommended Settings
Advance
Panasonic, Runco
Retard Denon
Normal All others
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