Esoteric G-02 Handleiding

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M as t e r Cloc k G e n e r at or G - 02

Master clock generator equipped with high precision crystal oscillator

Digital audio synchronized to one high precision master clock

New support for 10 MHz and 22.5792 MHz master clock outputs

Talk of the flawless sound produced by an audio system connected together with a high precision master clock has been circulating between high-end

audiophiles in various forms. The three dimensional effect of the sound stage gives the listener an actual feel of, say, the high ceiling of a concert hall in

addition to the width and depth of original performance. The listener is treated to a pure and focused image of the playback sound that gives a sense of

reality as if one could reach out and touch it. When the final note of the musical instrument fades away, you almost perceive the gradual silence like the

color of a dark veil. This is truly an ultimate achievement of audio playback that “conveys music” so close to the original sound it leaves an unforgettable

impression on the listener.

With the aim of enhancing the true potential of ESOTERIC digital players, the clock generator “G Series” was redesigned as a new generation of devices

with improved functionality, power and flexibility.

G-02 uses a high precision oven-controlled crystal oscillator (OCXO) that provides optimal stability as an audio clock. This next generation clock generator

can output a master clock of 10 MHz and 22.5792 MHz, perfect for controlling both audio and computer based devices.

Master clock generator

Every digital audio device operates with an internal clock circuit

generating the clock signals required to operate that device. The

master clock generator is an extremely stable oscillator that supplies

external clocks to digital devices (such as a transport, D/A convertor,

Super Audio CD player) equipped with clock input terminals. The

master clock generator supplies clock signals with a higher degree of

purity than clocks generated internally by digital devices and thus it

vastly improves the sound quality. By operating connected devices

off the same, highly stable master clock, timing errors called jitter

are virtually eliminated vastly improving imaging and dimensionality

while darkening the background.

Ultrahigh precision OCXO installed as the heart of the unit

The master clock generator

uses a high precision crystal

oscillator with a frequency

precision of +/-0.01 ppm (parts

per million) that is provided with

c u s t o m t u n i n g d e si g n e d

specifically for ESOTERIC. G-02

has a built-in, oven-controlled

crystal oscillator (OCXO) that

generates stable oscillation

under varying conditions. This is made possible by assembling a

quartz crystal resonator and oscillation circuit in an oven that

maintains the internal crystal and critical circuitry at a constant

temperature. G-02 achieves a very high frequency stability of +/-0.01

ppm under external temperature conditions of –20 °C to 70°C.

Newly-designed discrete clock output driver

circuit configuration

G-02 has adopted a newly-designed discrete clock output driver

circuit configuration. The discrete circuit uses a high-speed transistor

that is optimal for generating digital waveforms for which ultrafast

speed and a high degree of accuracy are required. Combined with a

heavy-duty power supply, this discrete circuit contributes to major

improvement of the sound quality by providing an accurate, stable

timing signal to audio devices.

Heavy-duty power supply unit

The master clock generator is equipped with a heavy-duty power

supply unit that fully supports its high level of performance. A large

R-core transformer featuring low loss magnetic flux leakage has

been selected for the G-02. A series of several capacitors and

Schottky barrier diodes are used as a smoothing circuit for quick

response to support fast digital processing, contributing to the

generation of highly accurate clock signals. For the display, an

independent power transformer and a dedicated power supply circuit

have been installed for each circuit block to minimize mutual

interference between blocks.

Support for 10 MHz clock and 22.5792 MHz master clock outputs

G-02 can output a 10 MHz clock and 22.5792 and 24.576 MHz

master clocks that are compatible with ESOTERIC’ s original “Direct

Master Clock Link.”

Three separate A/B/C output systems

G-02 can output 100 kHz and 10 MHz in addition to clock signals of 1x,

2x, 4x, and 512x multiples (22.5792 MHz/24.576 MHz) of the base

frequency (44.1 kHz or 48 kHz). Moreover, in frequency expansion

(EXP) mode, G-02 can output 8x, 16x, 32x, 64x, 128x, and 256x

multiples of the clock frequency that enables it to supply clock signals

to a wide range of devices, including professional equipment.

Each of these systems has two output ports supplying clock signals to

a maximum of six devices. The output frequency can be set

individually for each of the six ports from A1 to C2. If a single device

is connected, all output ports other than the A1 port can be turned off.

External 10 MHz input port

G-02 is equipped with an input port that is capable of receiving a 10

MHz reference signal from an external device. This port can be

connected to devices such as the Rubidium clock and GPS clock to

further upgrade the system.

ESOTERIC’s original gold-plated BNC ports

G-02 uses ESOTERIC’ s original BNC ports that provide highly reliable

contact. These durable and secure ports can handle even heavy and

thick high-end cables.

Superb chassis construction for optimal performance

Since the oscillator is generally susceptible to vibrations, chassis

construction has been designed with utmost care. G-02 has a

highly-rigid thick aluminum chassis that minimizes the small

vibrations that could affect clock precision.

Esthetic rounded form

Thick aluminum material is used for the front, side and top panels, as

well as the front corners. The G-02 chassis design has inherited the

tradition of the ESOTERIC product line of a separate type digital

player with screw-less rounded top and corners. The appearance of

G-02 is in perfect harmony with ESOTERIC digital players.

SACD/CD Transport

Clock Clock

Mast er Clock Generator

D/A Converter

Digital Audio

SACD/CD Player Mast er Clock Generator

Clock

Fig.1

Fig.2

M a s t e r C l o c k G e n e r a t o r G - 02

PRINTED IN JAPAN 0412O05•TECD - 0153

ESOTERIC COMPANY

1-47 Ochiai, Tama-shi, Tokyo 206-8530, Japan

Fax: (042)356-9240

www.esoteric.jp http://esoteric.teac.com/

Please note that Esoteric products are available at authorized distributors in respective countries.

" ESOTERIC " is a trademark of TEAC Corporation, registered in the U.S. and other countries. "Super Audio CD" is a registered trademark.

property rights of TEAC Corporation. These materials shall not directly or indirectly be published, reproduced, modified or distributed in any medium.

Design and specifications are subject to change without notice.

Specifications

Clock outputs 44. kHz setting kHz setting 1 44. 88. 176. 352. 705. 2.822 5.644 11.289 22.579 MHz1/ 2 / 4 / 8 / 6 kHz, 1.4112/ 4 / 8 / 6 / 2 48 48/ 96/ 2 / 4/ 8 6 / 2 / 4 / 8 / 619 38 76 kHz, 1.53 3.07 6.14 12.28 24.57 MHz Both settings 10 kH /1 MHz 0 z 0 Connectors BNC coaxial

Output level Frequency stability Frequency precision Output clock stabilization (approximate time in minutes)1Rectangular wave (TTL level / 75 ) ΩWithin ±0.01pp (-20°C to +70°C)m Within ±0.01ppm (when shipped new) Until oscillator

stabilizes after power turned o PLL locking tim (within ±1 BNC coaxial Sine wav 1.0 Vrm , Square wavn:15 / e:1 Standard frequency input Input frequency 10 MHz 0ppm) Connector Input levels e: 0.5 – s/50Ωe :1. 3. Vp5 – 0 p/50 ΩGeneral Power

supply AC 23 AC 220 0Hz/ACV, 5 120 0Hz/V, 6 0 0V, 6 Hz Power consumption 14 W ) 0 W 5 5 0 2(while warming up /1 (when stable) Dimensions (W × H × D, including protrusions) 44 mm x 106. mm x 36 mm (17 1/2" x 4 2/8" x 14 1/ 8") Weight 10. kg (22.49

lb.) Included accessories Power cord x 1, Warranty card x 1 Owner’s manual x 1,

P R O U D L Y M A D E I N T O K Y O