Digital Board Inputs; Analog Inputs; Digital Inputs - Sony STR-DE845 Training Manual

Hide thumbs Also See for STR-DE845:

Service manual (78 pages)

Operating instructions manual (62 pages)

Dimensions (1 page)

Table Of Contents

Table of Contents

Analog Inputs

2 Channel Stereo Inputs

There are nine analog inputs on the digital board. They are as follows:

Tuner

Phono

MD/Tape

TV/SAT

DVD/LD

Video 1, 2, 3

These inputs enter the digital board as analog audio and supply one of the following audio formats: Mono, Stereo

or Dolby Prologic. They go through a switching IC and then onto the Audio CODEC to be digitized. The digital

data stream is applied first to the Audio Decoder and then to the Audio DSP, which processes and applies the

effects of the chosen sound field.

5.1 Channel Input

The 5.1 Channel Input is a full surround sound analog audio input that bypasses the sound field processing of

the digital board in the receiver. All the surround sound processing required to produce the 5.1 Channel Input is

performed by the device connected to this input, such as a DVD player with a 5.1 Channel Output. The 5.1

Channel Input is applied directly to the output selector IC1502. IC1502's outputs are connected directly to the

amplifier system. The 5.1 Channel Input actual consists of six signals: Front Left, Front Right, Rear Left, Rear

Right, Center and Subwoofer. The Subwoofer is the "1" in the 5.1 designation.

Digital Inputs

There are two types of digital inputs - the Optical input and the Coaxial input. The only difference between these

two inputs is the medium used to transfer the signal between devices. The Optical input utilizes Fiber Optic cable

to transmit data as light pulses down a glass fiber center conductor. Because light pulses are used, the Fiber

Optic cable is virtually immune to any external electrical interference, making it the preferred digital signal source.

The Coaxial Input uses Coaxial cable similar to that found in Cable TV connections. It consists of a copper

center conductor, a foam insulator and an outer braided wire shield. The Coaxial cable has good external noise

immunity characteristics, but cannot compare to the Fiber Optic cable. Also, the bandwidth characteristic of the

Fiber Optic cable is much greater. Both of these input types are digital, using the same data protocol (S/P DIF

format). There are three Optical inputs, one Optical Output and one Coaxial input on this receiver.

Optical:

DVD/LD input

TV/SAT input

DAT/MD input

MD/DAT output