Esoteric Clock Radio G 0s User Manual
-
G 0s  
Master Clock Generator  
Owner’s Manual  
 
Contents  
Before Use  
Thank you for choosing TEAC. Read this manual carefully  
to get the best performance from this unit.  
Read this before operation  
< As the unit may become warm during operation, always leave  
sufficient space around the unit for ventilation.  
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . 2  
Before Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Names of Each Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
< The voltage supplied to the unit should match the voltage as  
printed on the rear panel. If you are in any doubt regarding  
this matter, consult an electrician.  
< Choose the installation location of your unit carefully. Avoid  
placing it in direct sunlight or close to a source of heat. Also  
avoid locations subject to vibrations and excessive dust, heat,  
cold or moisture.  
Set Up for Esoteric Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Set Up for DVD Player, Universal Player, etc. . . . . . . . . . . . . . . . 9  
Dimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
< Do not place the unit on the amplifier/receiver.  
< Do not open the cabinet as this might result in damage to the  
circuitry or electrical shock. If a foreign object should get into  
the unit, contact your dealer or service company.  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
< When removing the power plug from the wall outlet, always  
pull directly on the plug, never yank the cord.  
< Do not attempt to clean the unit with chemical solvents as  
this might damage the finish. Use a clean, dry cloth.  
< Keep this manual in a safe place for future reference.  
Placement of the unit  
High-quality hardened tool steel is used for the pin-point feet,  
securely attached to the bottom of the player. Although the  
cover feet may appear loose, the weight of the unit causes  
them to be firm and secure, and the design effectively damps  
and reduces vibration.  
< Be careful to avoid injury when moving the unit, on account  
of its weight. Get someone to help you if necessary.  
< To protect floors, etc. you may stick the felt supplied with the  
unit to the bottom of the cover feet.  
Pin-point foot  
Bottom plate  
of the unit  
Steel foot  
Cover foot  
Cover foot retaining screws  
 
 
Features  
Up to 192 kHz Word Sync clock production  
Super-rigid Chassis to Ensure  
Uncompromised Sound Quality  
With the advent of digital equipment using higher sampling  
frequencies than ever, 176.4 kHz and 192 kHz word clocks  
(sync signals) are made available in addition to conventional  
44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz clocks.  
A rigid chassis featuring a total weight of 18 kg (40 pounds)  
helps to provide a stabilized platform for the clock operation.  
As an additional plus, the output circuitry consists of 3  
separate channels with a total of 6 output terminals, thus  
offering the capability of handling a variety of audio  
equipment controlled by different word clocks. Also, each of  
the 3 output channels is switch-selectable between 1xFs,  
2xFs, and 4xFs, so you can, for example, get an 88.2 kHz and  
a 176.4 kHz machine synchronized by connecting them to the  
single G-0s.  
< 5-mm thick steel base plate completely eliminates external  
vibrations.  
< Triangular pinpoint feet composed of case-hardened tool  
steel ensures enhanced stability against vibration.  
Employs carefully selected highest quality  
components  
Tight-tolerance components are carefully hand-picked and  
secured to the rugged chassis to support the high-precision  
clock operation.  
Clocks Generated by Internal High-precision  
Oscillator  
The G-0s uses an advanced rubidium oscillator (monthly  
precision variation: projected within 0.05ppb) that generates  
astonishingly super-accurate clocks.  
Ready for connection to external oscillators  
It is also possible to connect external reference frequency  
oscillators to the G-0s. Using this capability, you can, for  
example, readily bring in a higher precision oscillator when  
made available in the future.  
Universal Clock Output  
Some universal players use clocks different from the ones  
used by CD players to process both the video and audio  
signals at the same time.  
The G-0s comes with a 100 kHz clock output intended for  
universal players (in PAL FILM mode, the output is switched to  
96 kHz). If your universal players are 100 kHz-capable, you  
can control them by this high-precision clock.  
PAL Film Source-capable Clock Frequencies  
The PAL (European TV format) film source is a better image  
quality than NTSC discs provide. However, PAL video system is  
standardized at 25 frames per second while the PAL film  
source discs use the rate of 24 frames per second. So, if these  
discs are played back without inserting one additional frame  
per second in the process of conversion, the sound pitch may  
be higher than is expected. To play PAL film source material  
correctly, it is necessary to reduce the play speed by 4% and  
play at 24 frames per second. To meet this requirement, the  
G-0s is designed to output clock frequencies of 96% of  
48/96/192 kHz (i.e., 46.08/92.16/184.32 kHz).  
To play PAL film source material, connect the Esoteric UX-1 or  
any other Universal Player that is equipped to accept 96%  
clock frequencies.  
 
 
Names of Each Control  
A
B
C
D
E
A
B
D
FREQUENCY MODE button  
STANDBY/ON button  
When the Main Power switch on the rear panel is ON, use  
this button to turn the unit on or to standby. When the unit  
is on, the indicator lights.  
Use this to select the fundamental frequency of the word  
clock.  
44.1kHz:  
This is generally used for red-book CD players which operate  
with a 44.1kHz clock standard.  
MASTER button  
Press this button to select the signal source you will use for  
the reference frequency.  
When the clock signal is stabilized, the indicator for the  
MASTER button stops blinking and lights steadily.  
48kHz:  
This is used for DVD players, DAT recorders, etc. which  
operate with a 48kHz clock standard.  
PAL FILM:  
This is used for reproducing PAL DVD discs at 24 frames/sec.  
Xtal:  
When using the clock made by internal crystal oscillator  
E
Frequency change buttons [A/B/C]  
Rb:  
When using the internal rubidium oscillator as the source  
clock  
The frequency of the each line (A/B/C) is changeable  
between 1x/2x/4x of the fundamental frequency and off.  
Following frequency can be selected for each FREQUENCY  
MODE.  
Ext:  
When using the input from the reference sourced 10MHz IN  
terminal  
When OFF is selected, the indicator turns off.  
44.1kHz:  
44.1kHz, 88.2kHz, 176.4kHz  
48kHz:  
48kHz, 96kHz, 192kHz  
PAL FILM:  
C
UNIVERSAL CLOCK OUT button  
Use this to switch the Universal Clock output on or off.  
Universal Clock is the TEAC-ESOTERIC original clock for  
universal players.  
48P (46.08kHz), 96P (92.16kHz), 192P (184.32kHz)  
When the FREQUENCY MODE is set to 44.1kHz or 48kHz,  
the frequency of the universal clock is set to 100kHz. When  
the FREQUENCY MODE is set to PAL FILM, the frequency of  
the universal clock is set to 96kHz.  
When OFF is selected, the indicator turns off.  
 
 
 
A
WORD CLOCK OUT terminals  
These terminals output precise word synchronization signals. Connect these OUT terminals to the  
WORD SYNC IN terminals of the other digital equipment, using a commercially available BNC  
coaxial cable.  
< For other connections, read the instructions of each component you intend to use with this unit.  
< Each of the A, B, and C channels is switch-selectable between 1xFs, 2xFs, and 4xFs. So you can,  
for example, connect an 88.2 kHz and a 176.4 kHz machine to the single G-0s and synchronize  
them. Three buttons (A, B, and C) are provided on the front panel for each channel.  
B
UNIVERSAL CLOCK OUT terminal  
Universal clock signal is an original synchronization format developed by TEAC-Esoteric.  
These terminals output universal clock signals. Connect these OUT terminals to the UNIVERSAL  
CLOCK IN terminals of the other matched equipment (ex. UX-1, P-01,etc.), using a commercially  
available BNC coaxial cable.  
C
10MHz IN terminal  
You can use the input of external 10MHz reference frequency. Connect this terminal to the  
output terminal of the external 10MHz oscillator. Use a commercially available BNC coaxial cable  
for connection.  
D
SIGNAL GND connection  
Use a commercially available PVC-covered cord to connect the signal ground terminal on the unit  
to the amplifier signal ground.  
< Note that this is NOT an electrical safety ground (earth).  
E
Power cord receptacle  
After all other connections have been made, insert the supplied AC power cord into this  
receptacle, then connect the other end of the power cord into the AC power source. Ensure that  
your AC voltage corresponds to the voltage marked on the rear panel of the unit. Consult a  
qualified electrician if you are in doubt.  
< In order to avoid the risk of electric shock, fire, or other hazard, only use the supplied power cord  
or a suitably approved OEM power cord.  
< If you are not going to use the unit for some time, disconnect the power cord from the wall  
socket.  
F
Main Power switch  
Use this to turn the unit on and off.  
< When the G-0s is turned on, the process of pre-heating the rubidium oscillator to its operating  
temperature gets started. It takes several minutes before the oscillator is ready for operation.  
Keep the unit turned on if you want the oscillator to stabilize more quickly.  
The equipment draws nominal non-operating power from the AC outlet with its POWER switch  
in the OFF position.  
 
Set Up for Esoteric Units  
4
Select 44.1kHz using the FREQUENCY MODE button.  
2
3
4
5
5
Select the frequency of the word clock for each line by  
pressing the A, B or C button.  
This is the recommended set up for synchronization with  
TEAC-ESOTERIC CD units:  
P-70, X-01, UX-1, P-01, D-01  
< Set the frequency as high as the connected units will allow for  
synchronization.  
1
Connect WORD CLOCK OUT terminals to WORD SYNC IN  
terminals of each unit using commercially available BNC  
coaxial cables.  
P-70: 88.2 kHz  
X-01: 176.4 kHz  
P-01: 176.4 kHz  
D-01: 176.4 kHz  
P-70: turn ON the WORD SYNC IN switch (front panel), then  
set the PLL filter switch (back panel) to ‘MODE2’.  
X-01: select ‘Word M1 ON’ using the CLOCK MODE button.  
UX-1: select ‘Word ON’ using the CLOCK MODE button.  
P-01: select ‘Rb IN’ using the WORD button.  
NOTE:  
If you connect this unit to other manufacturers units, be sure  
to read the manuals of those devices to confirm the frequency  
range of synchronization.  
Dual AES connection will require you to set the clock  
frequency at one half of the audio signal frequency.  
D-01: select ‘Rb IN’ using the WORD button.  
2
Press the STANDBY/ON button to turn the unit on.  
The standby indicator will turn off.  
3
Press the MASTER button to select which oscillator you  
will use for the reference frequency.  
< “Rb” is recommended.  
 
 
Set Up for DVD Players, Universal Players, etc.  
5
If your units are connected to the WORD SYNC OUT  
terminals, select the frequency of the word clock for  
each line by pressing the A, B or C button.  
2
3
6
4
5
< Set the frequency as high as the connected units will allow for  
synchronization.  
This is the recommended set up for synchronizing DVD  
players, D/A converters and other similar digital devices.  
6
If your units are connected to the UNIVERSAL CLOCK  
OUT terminals, press the UNIVERSAL CLOCK OUT button  
to turn it on.  
1
Connect WORD CLOCK OUT terminals to word  
synchronization input terminals of your units, using  
commercially available BNC coaxial cables.  
If your unit can be synchronized with the universal clock  
signal (ex. UX-1, P-01, etc.), connect UNIVERSAL CLOCK OUT  
terminals to the universal clock input terminals of the unit,  
using a commercially available BNC coaxial cable.  
< Set each unit to the slave mode (word synchronization input  
mode).  
100 kHz signal is output from the terminals when you set the  
master mode to 44.1kHz or 48kHz. 96 kHz signal is output  
from the terminals when you set the master mode to PAL  
FILM.  
2
Press the STANDBY/ON button to turn the unit on.  
The standby indicator will turn off.  
< Digital output from the digital output terminals may be  
prohibited depending on the DISC format (ex. SACD). Your  
D/A converter may not be able to convert all the digital  
output signals.  
3
Press the MASTER button to select which oscillator you  
wish to use for the reference frequency.  
< “Rb” is recommended.  
4
Select the appropriate frequency mode using the  
FREQUENCY MODE button.  
48kHz:  
If you intend to play DVD, DAT, etc.  
44.1kHz:  
If you intend to play CD.  
PAL FILM:  
If you intend to play PAL DVD discs at 24frames/sec.  
< Before you set PAL FILM mode, confirm that the connected  
unit can be synchronized with the frequency of PAL FILM.  
UX-1 can be synchronized with the PAL FILM mode.  
 
 
Dimmer  
Troubleshooting  
In case you experience any problem with this unit, please take  
the time to look through this chart and see if you can solve the  
problem yourself before you call your dealer or a TEAC service  
center.  
No power  
e Check the connection to the AC power supply. Check and  
make sure the AC source is not a switched outlet and that,  
if it is, the switch is turned on. Make sure there is power to  
the AC outlet by plugging in another item such as a lamp or  
fan.  
e Turn on the POWER switch on the rear panel.  
The front display can be dimmed to suit your preferred  
environment. There are two levels and an “off” setting.  
Not synchronized  
e Check to see if the current word clock output is supported  
by the connected players. If necessary, select a word clock  
frequency that is appropriate for the individual players.  
There are occasions where the word clock available for  
synchronization varies depending on the connection and  
settings of the individual players. For details, consult the  
manual for each player.  
Press the A button for more than 2 seconds to switch  
the dimmer mode.  
LEd OFF 1:  
All the illuminations are turned off except the MASTER  
button indicator (Xtal, Rb, Ext).  
e If you are using the PAL FILM mode, check to see whether  
the connected player supports the PAL FILM frequency (-4%  
of the standard frequency).  
LEd OFF 2:  
All the illuminations are turned off.  
e Check to see whether the sync outputs on the rear panel are  
connected to the acceptable sync inputs of the individual  
players.  
LEd ON:  
Normal mode.  
Desired frequency not selectable with A, B, and C buttons  
e Select the proper fundamental frequency in FREQUENCY  
MODE before operating the buttons.  
< Note that the OFF setting is memorized when the power is  
turned off.  
Odd sound pitch  
e Do not use the PAL FILM mode for NTSC discs or PAL discs  
other than film source discs.  
< In OFF mode, when you turn on the power or you operate  
other buttons, the illuminations turn temporarily on, and after  
the clock signal is stabilized, it turns off. (After the indicator  
for the MASTER button stops blinking and lights steadily.)  
If normal operation cannot be recovered, unplug the  
power cord from the outlet and plug it in again. This  
resets the internal micro-computer which can be disturbed  
during electrical storms, power interruptions, et cetera.  
Maintenance  
If the surface of the unit gets dirty, wipe with a soft cloth or  
use diluted neutral cleaning liquid. Be sure to remove any  
fluid completely. Do not use thinner, benzine or alcohol as  
they may damage the surface of the unit.  
 
 
Specifications  
Clock outputs  
General  
44.1 kHz lines. . . . . . . . . . . . . 44.1 kHz, 88.2 kHz, 176.4 kHz  
48 kHz lines. . . . . . . . . . . . . . . . . . . 48 kHz, 96 kHz, 192 kHz  
PAL FILM lines. . . . . . . . . . 46.08 kHz, 92.1 6kHz, 184.32 kHz  
UNIVERSAL CLOCK lines. . . . . . . . . . . . . . . . 100 kHz, 96 kHz  
Power supply . . . . . . . . . . . . . . . . . . . . . . . . AC 120 V, 60 Hz  
Power consumption. . . . . . 75 W (maximum), 31 W (nominal)  
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18.5 kg (40.8 lbs)  
Terminals. . . . . . . . . . . . . . . . . . . . . . . . . . . BNC coaxial/75 Ω  
Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . rectangular wave  
External dimensions (W x H x D). . . . . . . 442 x 155 x 351 mm  
(17.4˝ x 6.1˝ x 13.8˝)  
Accuracy  
Under 0.05ppb (factory setting, ppb: 10-9)  
Accessories  
Power cord x 1  
Felt x 3  
Warranty card x 1  
Owner’s manual x 1  
Stabilized time of the output clock  
If the main power to the Rubidium oscillator is first turned  
on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 minutes  
If the G-0s is in standby mode and the Rubidium oscillator is  
stabilized. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 seconds  
• Design and specifications are subject to change without  
notice.  
• Weight and dimensions are approximate.  
• Illustrations may differ slightly from production models.  
MASTER/FREQUENCY MODE switched to output stabilized . .  
Less than 10 seconds  
Frequency input  
Input. . . . . . . . . . . . . . . . . . . . . . . . 10 MHz (under 10 ppm)  
Rectangular or Sine wave, 1.4-5 V (peak to peak)  
Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . BNC coaxial/75 Ω  
351mm  
333mm  
442mm  
155mm  
 
 
Z
3-7-3, Nakacho, Musashino-shi, Tokyo 180-8550, Japan Phone: (0422) 52-5081  
TEAC CORPORATION  
TEAC AMERICA, INC.  
TEAC CANADA LTD.  
TEAC MEXICO, S.A. De C.V  
TEAC UK LIMITED  
7733 Telegraph Road, Montebello, California 90640 Phone: (323) 726-0303  
5939 Wallace Street, Mississauga, Ontario L4Z 1Z8, Canada Phone: (905) 890-8008  
Campesinos N°184, Colonia Granjas Esmeralda, Delegacion Iztapalapa, CP 09810, México DF Phone: (525) 581-5500  
5 Marlin House, Croxley Business Park, Watford, Hertfordshire, WD18 8TE, U.K. Phone: 01923-819699  
Bahnstrasse 12, 65205 Wiesbaden-Erbenheim, Germany Phone: 0611-71580  
TEAC EUROPE GmbH  
TEAC FRANCE S.A.  
17, Rue Alexis-de-Tocqueville, CE 005 92182 Antony Cedex, France Phone: (1) 42.37.01.02  
Via C. Cantù 11, 20092 Cinisello Balsamo, Milano, Italy Phone: 02-66010500  
TEAC ITALIANA S.p.A.  
TEAC AUSTRALIA PTY., LTD.  
A.B.N. 80 005 408 462  
280 William Street, Melbourne VIC 3000, Australia Phone: (03) 9672-2400  
This appliance has a serial number located on the rear panel. Please record  
the model number and serial number and retain them for your records.  
.
Model number  
Serial number  
1004 MA-0945A  
 

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