Fostex TV Converter Box VC 8 User Manual

Owner’s Manual  
Model  
ADAT/ANALOG Converter  
OPTICAL  
ADAT/ANALOG CONVERTER  
CLOCK  
ANALOG INPUT MODE  
1-2 1-4 1-8  
DIGITAL MODE  
ADAT S/P DIF  
POWER  
STBY ON  
75  
WORD  
OPTICAL INT(44.1k)  
ON  
OFF  
LOCKED  
Table of Contents  
Safety Instruction..............................................................................................2  
Introduction.......................................................................................................3  
Precautions.......................................................................................................3  
Outstanding Features.......................................................................................3  
Names and Functions.......................................................................................4  
Connecting Examples.......................................................................................5  
Example at operating it as the ADAT-ANALOG converter......................5  
Example at operating it as the S/P DIF-ANALOG converter...................8  
Specifications....................................................................................................9  
 
Model VC-8 Owner’s Manual  
INTRODUCTION  
Thank you very much for having purchased the Fostex Model VC-8.  
The VC-8 is an adat/analog converter which allows connections to be made with adat optical exclusive  
digital multirecorder such as the VR-800 and various analog mixers. In order to accomplish high  
quality collaboration with analog mixers, the professional 20 bit type are employed for AD/DA.  
Also, to build a most effective system matched with the number of analog mixer output BUSes (2 BUS  
OUT, 4 BUS OUT, 8 BUS OUT) the INPUT MODE switch makes it unnecessary to reconnect the cables  
at record/playback. Furthermore, the VC-8 can be used as a S/P DIF/analog converter, and by  
connecting to the sound card contained in various computers with digital input/output, it will give  
a clean record/playback environment free of internal noise generated in the computer.  
Before operating VC-8, it is recommended to thoroughly read this manual to insure long life of this  
equipment.  
Precautions (please read before use)  
Outstanding Features  
Power supply  
* A digital multiple system can be setup by using  
the adat optical and analog in/out converter of  
the VC-8 together with various analog and digital  
mixers provided with adat optical such as the  
VR800.  
* When unplugging the AC adaptor from the outlet,  
be sure to grasp the adaptor. Attempting to unplug  
it by pulling on the AC cable may damage the  
wiring.  
* It is dangerous to use any power cable that is cut  
or frayed. If the power cable is damaged,  
immediately stop using it, and have it repaired.  
* Due to employ of the professional 20 bit AD/DA  
converter, it is possible in conjunctive operation  
with the analog mixer without degrading the high  
quality sound of digital recordings.  
* Do not plug in or unplug the AC adaptor with wet  
hands. Doing so may result in dangerous electric  
shock.  
* As the INPUT MODE is switchable, it is possible to  
construct a system to match the number of BUSSes  
in the analog mixer.  
* Do not open the unit or touch any parts inside.  
Doing so may result in a dangerous electric shock,  
and could damage the unit.  
* Additionally, as S/P DIF can be converted to the  
analog inputs/outputs and vice versa, it can be  
connected to the internal sound card of the  
computer provided with digital inputs/outputs.  
* Do not let water or other liquids, flammable  
materials, or metal objects such as pins get inside  
the unit. These things may cause electrical shock  
or short circuit the VC-8, and damage it.  
If the VC-8 should become wet, unplug the AC  
adaptor from the AC outlet, and contact your  
authorized service station.  
* Either the internal (44.1kHz) or OPTICAL/WORD  
(Phase adjusting range: 32~48kHz) can be selected  
and thus it can be widely adapted to digital  
equipment.  
Location  
* Avoid using the VC-8 in the following locations:  
* Locations of extreme low or high temperatures, or  
extreme changes in temperature.  
* Locations with excessive moisture or dust.  
* Locations where direct sunlight falls for an  
extended time, or near a stove or other source of  
heat.  
* Locations where electrical voltage varies.  
* Unstable locations or where there is heavy  
vibration.  
* Near strong magnetic fields (on top of a television  
or speaker).  
3
 
Model VC-8 Owner’s Manual  
Names and Functions  
ANALOG INPUT MODE switch  
This switch is used to select the  
channel to which the ADAT output  
should be assigned for the signal  
input to the ANALOG INPUT jack.  
This switch will be active only when  
the DIGITAL MODE switch is set to  
ADAT. Refer to pages 6 and 7 for  
details.  
POWER switch/POWER LED  
AC power to the VC-8 is switched  
ON/OFF (or “standby”). If the VC-  
8 is not to used for a long period,  
the AC adaptor should be  
unplugged from the wall AC mains.  
WORD IN terminal switch  
This must be switched ON  
when the external WORD  
clock is input.  
OPTICAL  
ADAT/ANALOG CONVERTER  
CLOCK  
ANALOG INPUT MODE  
1-2 1-4 1-8  
DIGITAL MODE  
ADAT S/P DIF  
POWER  
75  
WORD  
OPTICAL INT(44.1k)  
ON  
OFF  
STBY  
ON  
LOCKED  
LOCKED LED  
CLOCK selector switch  
DIGITAL MODE selector switch  
The DIGITAL MODE IN/OUT  
formats (ADAT or S/P DIF) is  
selected by this switch.  
This indicates status  
of the operating  
clock selected by the  
CLOCK selector  
switch. Refer to page  
6 for details.  
The VC-8 operating clock (INT, WORD  
or OPTICAL) is selected by this switch.  
Refer to page 6 for details.  
Refer to page 6 for details.  
DIGITAL INPUT/OUTPUT connectors  
There are connected to the VR800  
digital multitrack recorder or to the  
DIGITAL IN/OUT connectors of a digital  
recorder provided only with digital in/  
out connectors.  
ANALOG INPUT connectors (1-8)  
These are connected to BUS OUT  
(or GROUP OUT) of the analog  
mixer. Refer to pages 5 and 7 for  
details.  
8
7
6
5
4
3
2
1
IN  
OUT  
IN  
AD-12A ONLY  
OPTICAL  
OUT  
12V  
8
7
6
5
4
3
2
1
DC IN  
ANALOG  
WORD IN  
DIGITAL  
DC IN jack (Center: Plus +)  
ANALOG OUTPUT connectors (1-8)  
WORD IN connector (BNC)  
The external WORD clock  
signal is input here.  
The AC adaptor (AD-12A)  
included with the VC-8 is  
connected here. Do not use an  
adaptor that is not soecified for  
the VC-8.)  
These are connected to the TAPE  
INPUT jacks of the analog mixer.  
Refer to pages 5 and 7 for details.  
Refer to page 5 for details.  
4
 
Model VC-8 Owner’s Manual  
Connecting Examples  
Example at operating it as the ADAT-ANALOG converter  
The following connecting schematic is an example of locating the VC-8 between an analog mixer  
with 8 TAPE IN - 8 BUS OUT (or GROUP OUT) and the VR800 (digital multitrack recorder). In this  
system, the 8 BUS output from the analog mixer is converted to adat digital signals and the signals of  
channels 1~8 can be recorded on tracks 1~8 of the VR800.  
DATA OUT  
DATA IN  
OUT  
MIDI  
WORD OUT  
SCSI  
OPTICAL
IN  
AC IN  
POWER  
DATA IN  
DATA OUT  
8
7
6
5
4
3
2
1
IN  
AD-12A ONLY  
VC- 8  
OPTICAL  
OUT  
12V  
8
7
6
5
4
3
2
1
DC IN  
ANALOG  
WORD OUT  
WORD IN  
VR800  
Note: When connecting to a  
digital recorder with WORD OUT  
such as VR800, it always must  
be connected to WORD IN of the  
VC-8 and used by input of  
WORD clock.  
BUSS OUT (GROUP OUT) 1~8  
TAPE IN 1~8  
Analog Mixing Console  
Sound sources  
Note: When the digital inputs and outputs of the VC-8 and VR800 (or another digital recorder) are connected  
as shown in above connecting schematic, be sure to set one side as the clock master and the other as the  
clock slave.  
In other words, if the VC-8 had been set as the master, then VR800 (or another digital recorder) must be set  
as the slave, or if in the reverse situation whereas VC-8 had been set as the slave, then VR800 (or another  
digital recorder) must be set as the master. The most recommended setting at using the VC-8 is to establish  
the digital recorder as the master and the VC-8 as the slave as shown in table below.  
VR800: Asynchronous mode  
Other recorder: Internal mode  
VR800: Synchronous mode  
Other recorder: External mode  
The most recommended setting. Furthermore, if the  
WORD clock can be input, then WORD must be input.  
Recorder  
VC-8  
VR800 (or recorder): Master  
VC-8: Master  
VR800 (or recorder): Slave  
VC-8: Slave  
This setting is employed if the recorder (general DAT and  
MD) has an internal clock and thus cannot accept digital  
signals.  
CLOCK switch  
INT (44.1kHz)  
Mutual exchanged of digital signals between the equip-  
ment is possible by this setting, but deterioration of sound  
quality is unavoidable.  
VR800 (or recorder): Slave  
VC-8: Slave  
VR800 (or recorder): Slave  
VC-8: Slave  
CLOCK switch  
This setting cannot be used. Adigital loop will be created  
in general type DAT and MD and thus will not operate  
correctly.  
WORD or OPTICAL  
5
 
Model VC-8 Owner’s Manual  
Setup of the VR800  
1.Set the VR800 digital input track to [AdAt] and the digital in clock to [ASYnC](Asynchronous mode).  
2.Set the VR800 digital output track to [AdAt].  
Note: Refer to the VR800 Owner’s Manual for setups of the VR800 “Digital input track” and “Digital output track”  
settings.  
Setup of the VC-8  
Note: Be sure to switch off power to the VC-8 at setup of the various selector switches. Should the switches be  
manipulated with power switched on, noise could be created and the VC-8 may not function correctly.  
OPTICAL  
ADAT/ANALOG CONVERTER  
CLOCK  
ANALOG INPUT MODE  
1-2 1-4 1-8  
DIGITAL MODE  
ADAT S/P DIF  
POWER  
STBY ON  
75  
WORD  
OPTICAL INT(44.1k)  
ON  
OFF  
LOCKED  
5
1
4
3
2
1.Set the DIGITAL MODE switch to [ADAT].  
4.Switch ON the terminating switch.  
2.Set the ANALOG INPUT switch to [1-8].  
If it is to be connected to a 4 BUS or 2 BUS mixer,  
refer to next page.  
5.Switch on power to the VC-8.  
At this stage, as signals are being input to both  
DATA IN and WORD IN, the LOCKED LED will be lit  
in orange color.  
3.Set the CLOCK switch to [WORD].  
<The CLOCK switch and LOCKED LED>  
The CLOCK switch is for selecting the required clock frequency and is selected in accordance to the application  
as lited below. Depending on the application, the LOCKED LED indicates the type of digital signal that is  
input and setting of the CLOCK switch.  
CLOCK SW  
WORD IN  
OPTICAL  
INT (44.1k)  
WORD  
OPTICAL IN  
Lit in  
green  
Lit in  
green  
Extin-  
Extin-  
Lit in  
Lit in  
Extin-  
Extin-  
Extin-  
guished  
Lit in  
green  
Lit in  
green  
Extin-  
guished  
LOCKED LED  
FUNCTIONS  
guished guished orange  
green guished guished  
If the LOCKED LED is lit in green, If the LOCKED LED is lit in red or  
the VC-8 will operate in sync with orange, the VC-8 will operate in  
the digital signal input to the VC-8 sync with the word clock that is in-  
DATAIN connector. If the LOCKED put to the VC-8 WORD IN connec-  
LED is extinguished, it indicates that tor. If the LOCKED LED is lit in  
no digital signal is being input and green or is extinguished, it is an in-  
it will not operate correctly even dication that word clock is not be-  
though switched to OPTICAL. In ing input and thus will not operate  
such case, set the CLOCK switch correctly even though the CLOCK  
Regardless to the LOCKED LED  
indication, the VC-8 will operate  
by its internal 44.1 kHz crystal.  
to INT.  
switch is set to WORD. In such  
case, set the CLOCK switch to  
OPTICAL or INT.  
6
 
Model VC-8 Owner’s Manual  
When connecting a 4 BUS OUT mixer  
Connect the mixer BUS OUT to INPUT 1~4 of the VC-8 and select [1-4] of the VC-8 ANALOG INPUT MODE  
switch. Signals input to ANALOG IN 1~4 will be assigned, respectively, to ADAT outputs 1~4 and 5~8.  
In other words, the ANALOG IN 1~4 signals will be simultaneously sent to tracks 1~4 and 5~8, thus 4  
tracks each can be recorded without re-connecting the cables.  
8
7
6
5
4
3
2
1
IN  
AD-12A ONLY  
ATA  
MIDI  
WORD OUT SCSI  
OPTICAL  
OUT  
IN  
AC IN  
POWER  
OUT  
OPTICAL  
12V  
8
7
6
5
4
3
2
1
DC IN  
ANALOG  
WN  
DIGITAL  
Note: When connecting to a digital recorder  
with WORD OUT such as VR800, it always must  
be connected to WORD IN of the VC-8 and used  
by input of WORD clock.  
When connecting a 2 BUS OUT mixer  
Connect the mixer BUS OUT to INPUT 1~2 of the VC-8 and select [1-2] of the VC-8 ANALOG INPUT MODE  
switch. Signals input to ANALOG IN 1~2 will be assigned, respectively, to ADAT outputs 1~2, 3~4, 5-6 and  
7-8. In other words, the ANALOG IN 1~2 signals, in the above combinations, will be simultaneously sent  
to each 2 tracks for recording without re-connecting the cable.  
8
7
6
5
4
3
2
1
O
IN  
AD-12A ONLY  
ATA  
O
MIDI  
WORD OUT SCSI  
OPTICAL  
I
OUT  
IN  
AC IN  
POWER  
OUT  
OPTICAL  
12V  
8
7
6
5
4
3
2
1
DC IN  
ANALOG  
WOIN  
DIGITAL  
Note: When connecting to a digital recorder  
with WORD OUT such as VR800, it always must  
be connected to WORD IN of the VC-8 and used  
by input of WORD clock.  
7
 
Model VC-8 Owner’s Manual  
Example at operating it as the S/P DIF-ANALOG converter  
The following is a connecting example of using the VC-8 as a S/P DIF-ANALOG converter which  
makes it possible to extract sound from CD and DVD with the sound card contained in the computer  
with S/P DIF digital output. By separating the analog circuit from the computer, this system can  
playback (or record) a clear sound free of noise created in the computer.  
8
7
6
5
4
3
2
1
IN  
OUT  
IN  
Computer/with  
sound card  
AD-12A ONLY  
OPTICAL  
OUT  
12V  
8
7
6
5
4
3
2
1
DC IN  
ANALOG  
WORD IN  
DIGITAL  
VC-8  
Monitor amplifier  
or recorder  
S/P DIF OUT  
Setup of the VC-8  
Note: Be sure to switch off power to the VC-8 at setup of the various selector switches. Should the switches be  
manipulated with power switched on, noise could be created and the VC-8 may not function correctly.  
Note: The ANALOG INPUT MODE switch  
will not function when the DIGITAL MODE  
switch is used for [S/P DIF].  
OPTICAL  
ADAT/ANALOG CONVERTER  
CLOCK  
ANALOG INPUT MODE  
1-2 1-4 1-8  
DIGITAL MODE  
ADAT S/P DIF  
POWER  
STBY ON  
75  
WORD  
OPTICAL INT(44.1k)  
ON  
OFF  
LOCKED  
1
2
3
1.Set the DIGITAL MODE switch to [S/P DIF].  
3.Switch on power to the VC-8.  
2.Set the CLOCK switch to [OPTICAL].  
<Other application examples>  
When using the Fostex Mode D-160 16 track digital recorder, it can simultaneously record 16 tracks of  
analog signals by connecting the VC-8 as shown below.  
ADAT  
DATA IN 9-16  
ANALOG IN 1~8  
DATA OUT  
VC-8  
D-160  
ANALOG IN 1~8  
ANALOG MIXER  
ANALOG MIXER  
8
 
Model VC-8 Owner’s Manual  
Specifications  
< INPUT x 8 >  
• Connector  
: RCA pin jack (x 8)  
• Input Impedance  
• Input Level  
: 20k or more  
: -10dBV  
< OUTPUT x 8 >  
• Connector  
• Load Impedance  
• Output Level  
: RCA pin jack (x 8)  
: 10k or more  
: -10dBV  
< DATA IN/OUT >  
• Connector  
: OPTICAL (x 2)  
• Format  
: 1. IEC60958 (S/P DIF)  
2. Alesis Proprietary Multi Channel Optical Interface  
(Switched to 1 or 2.)  
< WORD IN >  
• Connector  
: BNC type (x 1)  
• nput Level  
: TTL Level  
• Input Impedance  
: 75 (terminator switched On/OFF)  
< OTHERS >  
• AD  
: 20 bit 64 times over sampling modulation  
: 20 bit 128times over sampling modulation  
: INT mode : 44.1kHz  
• DA  
• Sampling Frequency  
: OPTICAL/WORD mode : 32 ~ 48kHz  
: 0.008%(@ 1kHz, TYPICAL)  
: 96dB (TYPICAL)  
Total Harmonic distortion  
• Dynamic Range  
< GENERAL >  
• Dimensions  
• Weight  
: 220 (W) x 43 (H) x 180 (D) mm  
: 1.0kg (Excluding accessories)  
• Power Supply  
: DC12V, 600mA,Exclusive AC Adaptor (AD-12A)  
* Specifications and appearance are subjects to change without notice for product improvement.  
* Adat and the  
marks are trademarks of Alesis Corporation.  
OPTICAL  
9
 
Model VC-8 Owner’s Manual  
Declaration of EC Directive  
This equipment is compatible with the EMC Directive (89/336/EEC) - Directive on approximation of member  
nation's ordinance concerning the electromagnetic compatibility and with the Low Voltage Directive (73/23/  
EEC) - Directive on approximation of member nation's ordinance concerning electric equipment designed to be  
used within the specified voltage range.  
The Affect of Immunity on This Equipment  
The affect of the European specification EN50082-1 (coexistence of electromagnetic waves - common immunity specification)  
on this equipment are as shown below.  
* In the electrical fast transient / burst requirements, radiated electromagnetic field requirements and static electricity discharg-  
ing environment, this could be affected by generation of noise in some cases.  
FOSTEX DISTRIBUTORS LIST IN EUROPE  
* Including non - EU countries. * underlined: contracted distributors (as of November, 1997)  
<AUSTRIA>  
<ITALY>  
NAME: ATEC Audio-u. Videogeraete VertriebsgesmbH.  
ADD: Im Winkel 5, A-2325 Velm, Austria  
TEL: (+43) 2234-74004, FAX: (+43) 2234-74074  
NAME: Recoton Italia Srl.  
ADD:V. 1 Maggio, N 18, 40050 Quarto Inferiore, (BO) Italy  
TEL: (+39) 51-768576, FAX: (+39) 51-768336  
<BELGIUM>  
<THE NETHERLANDS>  
NAME: EML N. V.  
NAME: IEMKE ROOS AUDIO B. V.  
ADD: Kuiperbergweg 20, 1101 AG Amsterdam, The Nether-  
lands  
ADD: Bijvennestraat 1A, B3500 Hasselt, Belgium  
TEL: (+32) 11-232355, FAX: (+32) 11-232172  
TEL: (+31) 20-697-2121, FAX: (+31) 20-697-4201  
<DENMARK>  
<NORWAY>  
NAME: SC Sound ApS  
ADD: Malervej 2, DK-2630 Taastrup, Denmark  
TEL: (+45) 4399-8877, FAX: (+45) 4399-8077  
NAME: Siv. Ing. Benum A/S  
ADD: P. O. Box 145 Vinderen, 0319 Oslo 3, Norway  
TEL: (+47) 22-139900, FAX: (+47) 22-148259  
<FINLAND>  
<PORTUGAL>  
NAME: Noretron Audio  
ADD: Tonttumuorinkuja 4, FIN-02200 Espoo, Finland  
TEL: (+358) 0-5259330, FAX: (+358) 0-52593352  
NAME: Caius - Tecnologias Audio e Musica, Lda.  
ADD: Rua de Santa Catarina, 131 4000 Porto, Portugal  
TEL: (+351) 2-2084456/325400, FAX: (+351) 2-314760  
<FRANCE>  
<SPAIN>  
NAME: Musikengro  
ADD: ZAC de Folliouses, B. P. 609, 01706 Les Echets, France  
TEL: (+33) 72 26 27 00, FAX: (+33) 72 26 27 01  
NAME: Multitracker. S. A.  
ADD: C/Garcilaso No. 9, Madrid 28010, Spain  
TEL: (+34) 1-4470700, 1-4470898, FAX: (+34) 1-5930716  
<GERMANY>  
<SWEDEN>  
NAME: Studiosound & Music GmbH  
ADD: Scheppe Gewissegasse 8, D-35039 Marburg, Germany  
TEL: (+49) 6421-12071, FAX: (+49) 6421-15522  
NAME: TTS Tal & Ton Studioteknik AB  
ADD: Gelbgjutarevagen 4, S-171 48 Solna, Sweden  
TEL: (+46) 8-7340750, FAX: (+46) 8-824476  
<GREECE>  
<SWITZERLAND>  
NAME: Bon Studio S. A.  
ADD: 6 Zaimi Street, Exarchia, 106.83 Athens, Greece  
TEL: (+30) 1-3809605-8, 3302059, FAX: (+30) 1-3845755  
NAME: Audio Bauer Pro AG  
ADD: Bernerstrasse-Nord 182, CH-8064 Zurich, Switzerland  
TEL: (+41) 1-4323230, FAX: (+41) 1-4326558  
<ICELAND>  
<UK>  
NAME: SCV London  
NAME: I. D. elrf. electronic Ltd.  
ADD: Armula 38 108 Reykjavik, Iceland  
TEL: (+354) 588 5010, FAX: (+354) 588 5011  
ADD: 3A 6-24 Southgate Road, London N1 3JJ, England, UK  
TEL: (+44) 171-923-1892, FAX: (+44) 171-241-3644  
10  
 

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