Mutec Smart digital smart clock User manual



   







  

  

��

  



  



�



��



SAFETY INSTRUCTIONS

General instructions

To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture, direct

sunlight or excessive heat from sources such as radiators or spotlights. No user serviceable parts are in-

side. Repair and maintenance must be carried out by qualified personnel authorized by MUTEC GmbH!

The unit has been designed for operation in a standard domestic environment. Do NOT expose the unit

and its accessories to rain, moisture, direct sunlight or excessive heat produced by such heat sources as

radiators or spotlights! The free flow of air inside and around the unit must always be ensured.

Initial operation

Prior to the initial operation of the unit, the appliance, its accessories and packaging must be inspected

for any signs of physical damage that may have occurred during transit. If the unit has been damaged

mechanically or if liquids have been spilled inside the enclosure, the appliance may not be connected

to the mains or must be disconnected from the mains immediately! If the unit is damaged, please do

NOT return it to MUTEC GmbH, but notify your dealer and the shipping company immediately, other-

wise claims for damage or replacement may not be granted. If the device is left in a low-temperature

environment for a long time and then is moved to a room-temperature environment, condensation

may occur on the inside and the exterior. To avoid short-circuits and flashovers, be sure to wait one or

two hours before putting the device into operation.

Power supply

The unit has been designed for operation in a standard household environment. Before you attempt

to operate the unit, please make sure that your local voltage matches the voltage required by the unit!

In addition, make sure that the device is properly grounded via the local electric installation!

Continent Mains voltage + Frequency Mains fuse

Europe 220V - 230V, 50Hz 230V

USA, Canada, Japan 115V, 60Hz 115V

Australia 240V, 50Hz 230V

The fuse holder can be found on the rear of the unit, just below the compartment marked »230 V (115

V)«. Use the fuse holder to adjust the required mains voltage. Ex factory, the unit is normally equipped

with a 230-V mains fuse. If the unit needs to be adjusted to 115 V, the fuse must be replaced as de-

scribed in the appendix section »Replacing the mains fuse«.

Please use the enclosed power cord (see packaging) to connect the unit to the mains. Switch the unit

off before you attempt to connect it to the mains. Connect the power cord to the unit, then to a stand-

ard 3-pin mains outlet. To draw the power cord, never pull on the cable but on the mains plug! For

information on the power-inlet wiring, refer to the »Wiring of connectors« section in the appendix.

Disconnect the device from the mains when not using it for an extended period!

WARRANTY REGULATIONS

§1 Warranty

MUTEC GmbH warrants the flawless performance of this product to the original buyer for a period of two (2) years from the date of purchase. If any failure occurs within

the specified warranty period that is caused by defects in material and/or workmanship, MUTEC GmbH shall either repair or replace the product free of charge within 90

days. The purchaser is not entitled to claim an inspection of the device free of charge during the warranty period. If the warranty claim proves to be justified, the product

will be returned freight prepaid by MUTEC GmbH within Germany. Outside Germany, the product will be returned with the additional international freight charges payable

by the customer. Warranty claims other than those indicated above are expressly excluded.

§2 Warranty transferability

This warranty is extended exclusively to the original buyer who bought the product from a MUTEC GmbH specialized dealer or distributor, and is not transferable to anyone

who may subsequently purchase this product. No other person (retail dealer, distributor, etc.) shall be entitled to give any warranty promise on behalf of MUTEC GmbH.

§3 Waranty regulations

The return of the completed registration card, or online registration on one of the websites specified below, is a condition of warranty. Failing to register the device before

returning it for repair will void the extended warranty.

The serial number on the returned device must match the one stated on the registration card or entered during online registration. Otherwise, the device will be

returned to the sender at the senders expense.

Any returned device must be accompanied by a detailed error description and a copy of the original sales receipt issued by a MUTEC dealer or distributor.

The device must be returned free of shipping expenses and in the original package, if possible; otherwise, the sender has to provide comparably protective packaging.

The sender is fully responsible for any damage or loss of the product when shipping it to MUTEC GmbH.

§4 Limitation of warranty

Damages caused by the following conditions are not covered by this warranty:

Damages caused by every kind of normal wear and tear (e.g. displays, LEDs, potentiometers, faders, switches, buttons, knobs, connecting elements, printed labels, cover

glasses, cover prints, and similar parts).

Functional failure of the product caused by improper installation (please observe CMOS components handling instructions!), neglect or misuse of the product, e.g.

failure to operate the unit in compliance with the instructions given in the user or service manuals.

Damage caused by any form of external mechanical impact or modification.

Damage caused by the users failure to connect and operate the unit in compliance with local safety regulations.

Damage caused by force majeure (fire, explosion, flood, lightning, war, vandalism, etc.).

Consequential damages or defects in products from other manufacturers as well as any costs resulting from a loss of production.

Repairs carried out by personnel which is not authorized from MUTEC GmbH will void the warranty. Adaptations and modifications to the device made with regard to

national, technical, or safety regulations in a country or of the customer do not constitute a warranty claim and should be set with MUTEC GmbH in advance.

§5 Repairs

To obtain warranty service, the buyer must call or write to MUTEC GmbH before returning the unit. All inquiries must be accompanied by a description of the problem and

the original buyers invoice. Devices shipped to MUTEC GmbH for repair without prior notice will be returned to the sender at the senders expense. In case of a functional

failure please contact:

MUTEC Gesellschaft fuer Systementwicklung und Komponentenvertrieb mbH

Siekeweg 6/8  12309 Berlin  Fon 030-746880-0  Fax 030-746880-99  [email protected]

MUTEC GmbH assumes no liability for any incorrect information given in this manual. Please note that

all software/hardware product names are registered trademarks of their respective owners. No part of

this manual may be reproduced, copied or converted to a machine-readable form or electronical media

without a written permission of MUTEC GmbH. We reserve the right to change or improve our products

without notice. © MUTEC GmbH 2002

Declaration of Conformity

We herewith confirm that the product complies with the European

Commissions standards on electromagnetic compatibility.

Interference emission: EN 50081-1, 1992

Resistance to interference: EN 50082-1, 1992

Presupposed as operation condition is that all clock outputs are con-

nected with high-quality and good shielded BNC 75 ohms cable.

This symbol, an exclamation mark inside a triangle,

alerts you to important operating or safety instructions

in this manual.

!

RISK OF

ELECTRICAL SHOCK!

CAUTION

!

This symbol, a flash of lightning inside a triangle, alerts

you to the presence of uninsulated dangerous voltage

inside the enclosure - voltage that may be sufficient to

constitute a risk of shock.

CONTENT

INTRODUCTION

General Function Description . . . . . . . . . . . . . . . . . 7

Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CONTROL ELEMENTS

SMART CLOCK Front Panel. . . . . . . . . . . . . . . . . . . 9

SMART CLOCK Rear Panel . . . . . . . . . . . . . . . . . . . 10

INSTALLATION

Content of the Box . . . . . . . . . . . . . . . . . . . . . . . 11

Placing the Device . . . . . . . . . . . . . . . . . . . . . . . 11

Wiring the Word Clock and Video Interfaces . . . . . . . . . 11

Wiring the AES/EBU and S/PDIF Interfaces . . . . . . . . . . 12

OPERATION

Selecting the Basic Clock Frequency. . . . . . . . . . . . . . 13

Selecting the Front-Panel Output Signal . . . . . . . . . . . 13

Selecting the Rear-Panel Output Signal. . . . . . . . . . . . 13

Output of PAL/NTCS Video Signals . . . . . . . . . . . . . . 14

Selecting Pull-Up/Pull-Down Factors . . . . . . . . . . . . . 14

Output of Blank-frame Signals . . . . . . . . . . . . . . . . 15

Delay-compensated Output of Clock Signals . . . . . . . . . 15

STATUS Area . . . . . . . . . . . . . . . . . . . . . . . . . . 15

APPENDIX

Pin Assignment of the Connectors . . . . . . . . . . . . . . 17

Replacing the Mains Fuse . . . . . . . . . . . . . . . . . . . 17

Switching over of Rear-Panel Output Signals . . . . . . . . 18

Setting the Video Generator. . . . . . . . . . . . . . . . . . 18

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . 20

Adjustable Word Clock Rates . . . . . . . . . . . . . . . . . 21

��

�



��



INTRODUCTION

Thank you for purchasing a SMART CLOCK or SMART CLOCK av Digital Audio

& Video Sync Master Clock Generator from MUTEC GmbH.

Please keep this manual for future reference, as it also contains the

functional description of the optional Video Expansion (P/NVSG-01) for the

SMART CLOCK!

General Function Description

The SMART CLOCK and SMART CLOCK av generate different clock signals

for the synchronization of digital audio devices such as hard-disk recorders,

audio workstations, digital mixing consoles, AD/DA converters, musical

instruments and sound cards. Simultaneous use of Word Clock, Word

Clock x 256, PAL/NTSC video, AES/EBU and S/PDIF clock signals enables each

device in the recording studio to be individually synchronized. In addition,

different Word Clock rates can be simultaneously output on the basis of

common clock frequencies. Thus, new devices with higher clock rates may

be integrated into an existing studio set-up without difficulty. It is also

possible to supply various workstations in the same room with different

clock rates.

The SMART CLOCKs offer nine different audio-related Word Clock

frequencies ranging from 32.0kHz to 192.0kHz, which are then

independently distributed to eight clock outputs with multipliers x1, x2

and x4. For the synchronization of ProTools systems, six Word Clock

frequencies from 32.0kHz to 96.0kHz can be transferred as Word Clock x256

(also called Super Clock).

The video reference generator (standard with SMART CLOCK av, optional

with SMART CLOCK) produces PAL or NTSC video sync-signals such as black

+ burst or composite sync. All the usual pull-up and pull-down frequencies

can be produced for film-to-video transfer (SMART CLOCK av only).

The design advantage of the SMART CLOCK is its high-precision frequency

generator, from which all clock signals are simultaneously derived. As a

result, the individual clock signals generated are synchronized to each other

in phase, and hence feature the same frequency accuracy and time base!

The frequency generation is accurate to < ± 1ppm and thus complies with

AES 11, Grade 1 as well as broadcast specifications.

For larger equipment set-ups, which require more clock outputs than are

provided by the SMART CLOCK/ -av, MUTEC offers a complementary Word

Clock signal distributor (DISTRIBUTOR ws) and an AES/EBU signal distributor

(DISTRIBUTOR ae). To provide a delay-compensated feed signal for these

distributors, each Word Clock and AES/EBU output on the SMART CLOCK/

-av can be set to transmit the internal SMART BUS signal. Thus, the signals

delivered by the SMART CLOCK and by the distributors are phase-synchro-

nized and time-coherent (!), even though the devices are wired in series.

Features

Generation of nine Word Clock frequencies ranging from

32.0kHz to 192.0kHz.

Basic clocks can be output with factors x1, x2, x4 and x256.

Simultaneous output of different clock rates.

Frequency accuracy in compliance with AES11, Grade 1.

Output signals contain extremely low jitter.

Generation of PAL or NTSC video signals (optional for SMART CLOCK

with P/NVSG-01 Module).

Output of PAL/NTSC video signals as composite sync or black + burst

(optional for SMART CLOCK with P/NVSG-01 Module).

Generates all so-called pull-up and pull-down frequencies for film-to-

video transfer: +0.1%, -0.1%, +4.166%, -4.0% (only for SMART CLOCK av).

Phase-synchronized generation of S/PDIF and AES/EBU blank frames.

Delay-compensated feed signals from MUTECs DISTRIBUTOR ws and

DISTRIBUTOR ae.

Frequency selection is retained after power-down.

7

Boxes which contain a triangle

with an exclamation mark in the

inside should be read carefully!

These include additional information which

are of major importance for the functional

descriptions in the text column.

!

The grey boxes contain supplementary

informationen for the corresponding

sections in the text columns. The content of

the individual box refers to the description

in the text column beside the box.

��



��



Applications

A / V synchronization

Low-jitter clock signal distribution

Multiple clock rate synchronization

Film, video and audio transfers

8

��

�



��



CONTROL ELEMENTS

SMART CLOCK Front Panel

1 POWER

This red LED lights up when the unit is switched on with the rear-panel

POWER switch (on condition that the adjusted voltage matches your local

voltage).

2 x1, x2, x4

This switch determines the multiplication factor for the basic clock rate, as

described in 3.

3 WC SELECT

The basic clock rate for all Word Clock and blank-frame signals can be set

here. The LEDs next to them display the choice made.

4 GENERATED FQ

These five LEDs display the clock rates described in 2 + 3.

5 STATUS

These two LEDs display the operating status of the internal reference

oscillator (OSCILLATOR ACTIVE) as well as the video generator

(VID GEN. INSTALLED).

6 (SMART CLOCK av only)

This enables you to change the sign of the pull-up and pull-down

frequencies with reference to the percentage of deviation from the basic

clock rate, described in 7.

7 4.16; 4.0; 0.1; 0% (SMART CLOCK av only)

These pull-up/pull-down factors set the percentage of deviation with

reference to the basic clock rate.

8 x1, x2, x4

This switch determines the factor by which the basic clock rate described in

2 and 3 is multiplied additionally. This setting refers exclusively to the signal

output for the outlets on the front panel.

9 VIDEO; x 256; WC

The signal to be transferred for the front-panel clock outlets is selected

here.

10 WC; VIDEO

These interfaces transfer either Word Clock, Word Clock x 256 or PAL/NTSC

video signals. The output impedances are 75 Ω (BNC connectors).

Refer to the OPERATIONS chapter for more

information.

9

-+

6

432 5 7 8 9 101

��

 

��



1 WC / SC /VIDEO OUT

These interfaces transmit either Word Clock, Super Clock or PAL/NTSC

Black + Burst signals. For each pair of outputs located one above the other,

you can select the transmitted signal by means of an internal slide switch.

The output impedances are 75 Ω (BNC connectors).

2 S/PDIF OPT OUT

This interface transmits a digital optical S/PDIF blank-frame signal, in compli-

ance with the specifications of IEC 60958 (Toshiba Toslink connectors, EIAJ

standard).

3 S/PDIF COAX OUT

This interface transmits an unbalanced electrical S/PDIF blank-frame signal,

in compliance with the specifications of IEC 60958 (cinch connectors). The

output impedance is 75 Ω.

4 AES/EBU SYNC OUT

This interface transmits a balanced electrical AES/EBU blank-frame signal, in

compliance with the specifications of

AES3-1992 (R1997). The output impedance is 110 Ω (XLR connector, male).

5 230V (115V)

This compartment houses the mains fuses, which must be inserted in

accordance with the local voltage used for operating the unit! See also the

safety instructions, in particular, the chapter OPERATION, and the section

»Replacing the Mains Fuse« in the appendix.

6 POWER switch

Mains power switch. Be sure to connect the unit properly to the mains by

using the enclosed power cord and select the country-specific mains voltage

by inserting a mains fuse of the correct type and rating before you attempt

to operate the unit. Please read the safety instructions.

7 Mains connector

Use this receptacle to connect the enclosed power cord. Be sure to set the

POWER switch to OFF and insert a mains fuse of the correct type and rating

before you connect the power cord to the unit and/or wall outlet.

For detailed specifications on all terminals,

refer to the PIN ASSIGNMENT OF THE

CONNECTORS and TECHNICAL DATA sections

in the appendix.

10

SMART CLOCK Rear Panel

6

432 5 71

��

�



��



11

INSTALLATION

Content of the Box

The unit was packed carefully. Nevertheless we recommend to check the

content directly after opening the package:

1 x SMART CLOCK or SMART CLOCK av

1 x Power cable

4 x Rubber feets

1 x Manual

1 x Registration card

Placing the Device

The unit should be set up as closely as possible to the devices to which it

will be connected, so as to avoid excessive cable lengths. Use the 4 rubber

feets enclosed with the appliance and stick them symmetrically on the

bottom side of the unit to protect the enclosure and supporting surface

from being damaged. When the unit is installed in a rack, the rubber feets

should not be used to save space!

For 19 rack installation MUTEC offers an optional set of rack ears

(MW-01/19 order no. 8020-005). Install the device so that one unit of rack

space is left free above the device to allow for sufficient ventilation! The

mounting depth including the terminals is 180 mm/7.07.

Another 150 mm/5.9 should be added for the required cables.

Never expose the device and accessories to rain, moisture, direct sunlight,

or excessive heat produced by radiators, heaters, or spot lights! Sufficient

air circulation in the environment of the device must be ensured!

Wiring the Word Clock and Video Interfaces

To allow for the synchronization of signals, the interfaces of all devices

involved must be properly connected to each other, so as to ensure a

logical signal flow. Always be sure to connect the Word Clock outputs of

the SMART CLOCK to the corresponding input of the devices you wish to

synchronize! Cable lengths should be kept as short as possible to minimize

signal losses and/or interferences!

For the transmission of Word Clock or video signals electrical, unsymmetri-

cal cables with a resistance of 75 Ω and BNC connectors on both ends are

used. Typically, such cables are marked »RG-59U, RG59B/U«.

Additionally, you should make sure that the Word Clock or video inputs

to be connected to the SMART CLOCKs outputs have a 75 Ω terminating

resistor! Most Word Clock or video inputs allow for enabling/disabling the

termination with a so-called »termination-switch«, which may be located

on the outside or inside of the device.

For devices which have no termination of the Word Clock input, e.g. RME

Hammerfall with Word Clock i/o or Alesis BRC, you can use an additional

BNC-T piece to terminate the input. Plug the T piece with its center connec-

tor into the input of the receiving device. Then, connect the cable coming

from the SMART CLOCK to one of the lateral connectors, and the other

connector of the BNC-T piece to a 75 Ω resistor forming the BNC termina-

tion.

Basically, you should avoid »looping through« Word Clock leads by means

of passive BNC-T pieces to preserve the signal quality, as level drops will be

the result. If there is no other way to wire your set-up, please make sure

that all Word Clock inputs (except for the last device in the chain) have

their terminations disabled! In a serial Word Clock chain only the last clock

input should have a termination! Never connect more than three devices in

series to one output!

Additionally the condition of the

packaging material and the device

should be checked carefully. If there

are any damages please refer to SAFETY

INSTRUCTIONS, Initial Operation, and

WARRANTY REGULATIONS.

!

Before installing the unit finally

the section SAFETY INSTRUCTIONS

located at the beginning of this

manual should be read.

!

It is imperative that the lengths

of all cables connected are largely

the same, as this is the only way to

ensure that all devices will be synchronized

in phase (exception: cable tolerances).

Please make sure that the cable used has a

resistance of 75 Ω, in compliance with the

specifications! If a cable with a different

resistance is used, a dramatic deterioration

of the signal quality can be the result! In

this case, the perfect synchronization of all

devices involved could be impaired.

!

We recommend using high-grade cables

with a good shielding for your clock signal

leads, in particular, if you need to transmit

Word Clock x 256 (so-called Super Clock)

signals over greater distances. In any case, a

length of max. 10 meters (approx. 30 feets)

should never be exceeded!

��

       

��



Wiring the AES/EBU and S/PDIF interfaces

Connect the AES/EBU interfaces with the help of balanced electrical cables

equipped with XLR connectors on both ends. The specifications stipulate a

specific cable resistance of 110 Ω (ask your retailer for a confirmation of this

value when purchasing the cables).

Connect the coaxial S/PDIF interface with the help of unbalanced electri-

cal cables equipped with cinch connectors on both ends. The specifications

stipulate a specific cable resistance of 75 Ω (ask your retailer for a confirma-

tion of this value when purchasing the cables).

Connect the optical S/PDIF interface with the help of Toshiba TOSLINK

compliant optical fiber cables. Here, you can use both plastic and glass

fiber-based cables. When using plastic fiber cables, lengths of 10 meters

should not be exceeded, so as to ensure the reliable transmission of signals.

Glass fiber cables can transfer data reliably even over greater distances.

12

MUTEC offers optical cables of various

lengths that have been specifically tested

for the transmission of S/PDIF and ADAT

signals (retailers and distributors only)!

Since some manufacturers offer optimized

cables for the transmission of digital S/PDIF

and AES/EBU audio signals, it will be a good

idea to ask your retailer for specific cables.

��

�



��



OPERATION

Selecting the basic Clock Frequency

Operating the SMART CLOCK and SMART CLOCK av is very simple.

Select the required basic clock frequency for your studio set-up with the

frequency selector switches depicted in the following figure.

First use the WC SELECT switch to choose 32.0kHz, 44.1kHz or 48.0kHz

for the basic clock rate. The appropriate LED will be illuminated. By using

the switch next to the LED, the previously selected clock rate can be

multiplied by the factors of x1, x2 and x4. For the x2 and x4 settings, the

appropriate LEDs, WCx2 and WC4, will light up. In this manner, all Word

Clock frequencies ranging from 32.0kHz to 192.0kHz can be set. The clock

rate selected here serves as the basic setting for all Word Clock and audio

signals.

The factory default is set at 44.1kHz, setting the WC SELECT switch

at its center position (44.100Hz LED is illuminated) and the clock rate

multiplication switch to its lowest setting (x1).

Selecting the Front-Panel Output Signal

Two additional clock outlets are located on the front panel of the SMART

CLOCK and SMART CLOCK av. With the help of the two switches shown in

the illustration, these can be set individually, independent of the outlets on

the rear panel of the device.

Select the desired output signal type with the right-hand switch:

VIDEO,

The video clock signals set for the video generator are sent out through

the front-panel outlets (only active for SMART CLOCK with built-in P/NVSG

option)

x256,

This setting multiplies basic clock rates from 32.0kHz to 96.0kHz by a factor

of 256. ProTools systems manufactured by Digidesign generally require

such high-output frequencies for synchronization.

WC,

Standard Word Clock signals are output here. The function of this switch

depends on the setting of the left-hand switch.

Select the Word Clock multiplication factor for both front-panel outlets

with the left-hand switch:

x1, x2, x4,

These factors refer to the previously set Word Clock basic signal. i.e. Using

the factory setting of 44.1kHz as a reference, this clock rate can also be

output as 88.2kHz (x2) or 176.4kHz (x4).

The output clock signal is always present at both front-panel clock outlets.

For information concerning the SMART CLOCK and SMART CLOCK av

compatible output clock rates, please consult the »Frequency Tables« in the

appendix.

Selecting the Rear-Panel Output Signals

As previously described, different output clock signals can be applied to the

rear-panel clock outlets on the SMART CLOCK and SMART CLOCK av. Please

also note that signal switching always refers to each set of vertically-aligned

clock outputs. Thus, the following output groups are formed:

Group 1: OUT 1

Group 2: OUT 2

Group 3: OUT 3

As rear-panel connections are generally used for permanent cable

connections, these signal selector switches are located inside the device.

13

Rear-Panel Output Signal select

Front-Panel Output Signal select

Basic clock frequency select

��



��

        

14

By factory default, all rear-panel clock outlets are set to Word Clock, in

accordance with the basic clock rate setting. Different signals and clock

rates may be adjusted using, for each pair of outlets, a five-level selector

switch located within the housing:

Position 1: Word Clock x1

Position 2: Word Clock x2

Position 3: Word Clock x4

Position 4: Word Clock x256

Position 5: SMART BUS

As previously described, the multiplication factors x1, x2 and x4 also refer

to the pre-set basic clock rate.

The fifth position activates the transfer of the SMART BUS signal. In terms

of frequency, this position is identical to that of position 4 (Word Clock

x 256), however, here the signal output is delay-compensated. It is used

specifically to feed MUTECs Word Clock DISTRIBUTOR ws. Please read the

section entitled »Delay-compensated Output of Clock Signals«.

For more information and to open the device, please consult »Adjusting the

Rear-Panel Output Signals« on page 10 of the appendix.

Output of PAL/NTSC Video Signals

Both the SMART CLOCKav and the SMART CLOCK (via its P/NVSG-01option)

can produce video and audio clock signals. In order to adapt to existing

video equipment, the video generator offers various settings. You can

choose from the following video formats:

PAL (B/G), 25fps, 625 lines

NTSC, 29.97fps, 525 lines

The factory setting is PAL (B/G).

The video signal type can also be selected:

PAL / NTSC black + burst

PAL / NTSC composite sync

The factory setting is PAL black + burst.

For more information, please consult the section entitled »Setting the

Video Generator« in the appendix.

Selecting Pull-Up/Pull-Down Factors

(SMART CLOCK av only!)

These correction factors refer to the basic clock rate and, consequently,

influence all clock rates set for the outlet pairs. The frequency of the video

signal generated is, however, unaffected.

Use the right-hand switch to select the percentage by which the output

clock rates are to be corrected. No correction values are generated in

position 0 %.

Use the left-hand switch to set the signs (+/-) for the correction values.

Individual values result from the following mathematical relationships:

+ 4.1666 % (25/24)

- 4.0 % (24/25)

+ 0.1 % (1001/1000)

- 0.1 % (1000/1001)

Pull-up and pull-down factors are only required for film-to-video transfer

and should be deactivated (0 %) during normal operation of the

SMART CLOCK av!

Before installing SMART CLOCK or SMART

CLOCKav in a 19 rack, we recommend

that you determine the signal flow of your

equipment set-up, as changing the rear-

panel clock signals always involves opening

the device.

Please note that video signal

selection always refers to all

corresponding outputs. Parallel

output of different signal variants is not

possible!

!

Selecting Pull Up-/Pull-Down Factors

��



��

        

15

Output of Blank-frame Signals

In parallel to the output of Word/Super Clock and Black + Burst signals,

three rear-panel outputs allow you to provide blank-frame signals, which

are also called as silent audio or »AES null «.

These are the three standardized interfaces for the transmission of digital

S/PDIF and AES/EBU audio signals. They are wired in compliance with the

specifications of comparable audio interfaces (cf. section »Pin assignments

of the connectors« and »Technical Data« in the appendix).

Delay-compensated Output of Clock Signals

The clock signal output described in the following is a very special feature

of your SMART CLOCK.

To expand the available number of clock outputs, MUTEC offers a comple-

mentary Word Clock signal distributor (DISTRIBUTOR ws). If only one sec-

tion of the SMART CLOCK outputs is connected to a signal distributor, this

will result in a time difference between the direct clock outputs and those

of the connected distributor, which is due to the resulting signal run times

in the cables between SMART CLOCK and distributor and to the run-time

delay in the distributor itself.

To make up for this delay, you can use an internal switch to disable the

delay units placed before the six rear-panel Word Clock outputs, so as to

ensure that the devices connected to the direct SMART CLOCK outputs are

provided with sync signals of the same phase position and time value as the

clock outputs of the signal distributor(s) (see illustration below)!

To disable the delay units please following the instructions given in the

appendix, section »Switching over of the Rear-Panel Output Signals«.

STATUS Area

This section provides you with information on various operating statuses of

the unit, which are signaled be red LEDs.

OSCILLATOR ACTIVE

This LED lights during the entire operating time of the SMART CLOCK or

SMART CLOCK av signaling that the internal frequency oscillator is working

flawlessly. When this LED goes out, this is due to an oscillator malfunction.

Please consult your retailer!

VIDEO GEN. INSTALLED

This LED signals at standard SMART CLOCK that the optional P/NVSG-01

video generator has been installed correctly and integrated into the system.

As for SMART CLOCK av this LED lights permantly.

S/PDIF + AES/EBU blank-frame outputs

STATUS

When changing the clock frequency,

you will note that the devices con-

nected to the S/PDIF or AES/EBU

outputs are synchronized only after a short

delay. This is due to the fact that each new

output clock frequency selected makes it

necessary to set the status bits of blank-

frame signals appropriately. The processor

performing this task enters standby mode

when a new clock frequency is selected, and

has to be restarted.

During normal operation of the SMART

CLOCK this prevents interference signals

generated by the processor during opera-

tion from affecting the integrity of the

output signals!

!

Delay-compensated

feed of

DISTRIBUTOR ws

Identical phase position and time base of all

output signals (also front-panel outputs)

SMART CLOCK / -av DISTRIBUTOR ws

��



��

        

16

��

�



��



17

APPENDIX

Pin Assignment of the Connectors

MAINS

3

2

1

3

2

1 Live, phase (brown; USA: black)

2 Protective earth (green/yellow; USA: green)

3 Neutral (blue; USA: white)

AES/EBU XLR-Output CINCH: OUPUT BNC-OUTPUT

1 Audio signal 1 Signal

2 Audio ground 2 Ground

2

1

2

1 Audio ground

2 a conductor (hot / +)

3 b conductor (cold / -)

Replacing the Mains Fuse

Disconnect the power cord from

both the wall outlet and the unit

before you attempt to replace the

mains fuse!

Make sure that the fuse holder is inserted

completely down to the bottom of its socket

and that the compartment is fully closed!

!

Use a small, flat-blade screwdriver to open the compartment that houses

the fuse holder. Carefully pull out the fuse holder from its socket. Turn it

by 180° and re-insert it into its socket. After closing the compartment, the

second mains voltage marker must be visible through the window in the

compartment cover.

��



��

        

18

Switching over of Rear-Panel Output Signals

CAUTION! Disconnect the unit from the mains before opening!

Place the unit, front panel towards you, on a table and remove the steel-

plate cover after unscrewing the six screws holding it. Locate the various

output connectors on the rear of the unit and follow them all the way

inside the enclosure. Locate the switches behind the individual output

connectors, which are marked 1 and 2 in the illustration shown above. Use

these switches to adjust the following output signals:

1 2 3 4 5

1

1 2 3 4 5

2

1) These three switches, which are assigned to one output pair each,

switch over from Word Clock signal to video signals, and vice versa. Since

all outputs are set to Word Clock signals by default, the black sliders of

these switches are set to the left position.

2) Use these three switches to set the various clock rates for the output

pair located before them. According to the numbering on the pc board

the switches are wired as follows:

1) Word Clock x 1 (default setting)

2) Word Clock x 2

3) Word Clock x 4

4) Word Clock x 256 (so-called Super Clock for ProToolsTM)

5) SMART BUS

Setting the Video Generator

The video generator P/NVSG-01 has a variety of parameters that allow

you to adapt it to existing video equipment. Please use the following

figure as a guide when adjusting the settings.

P/NVSG-01

2

1

Please make sure that video signals

can be output only if the switches

described in point 1 have been set

appropriately!

Output pairs configured for

the output of PAL/NTSC video

signals must be set as shown

here.

Remount the steel-plate

cover thoroughly before you

attempt to operate the unit!

!

��



��

        

19

1) Use DIP switch »a« (see above, right) to select the basic

video signal type. The marking OFF is not relevant, only the

position of the switch.

a) Video signal type

PAL / NTSC Black + Burst

PAL / NTSC Composite Sync

The factory default is black + burst.

2) Use this slide switch to select the basic video signal.

PAL oder NTSC

The factory default is PAL.

NTSC PAL

Please note that video signal selection

always refers to all corresponding outputs.

Parallel output of PAL and NTSC signals is

not possible!

Setting PAL or NTSC

Do not change

this switch

position!

b

Black + Burst

a

Composite Sync

Setting the video signal type

��



��

        

20

Technical Data

UNIVERSAL SYNC OUTPUTS

Interfaces 8 x BNC female, unbalanced, individually buffered, adjustable in pairs

Output levels: Word Clock 3.0 Vpp @ 75 Ω, output impedance 37 Ω

Output levels: Video 300 mVpp burst level @ 75 Ω, output impedance 75 Ω

300 mVpp H/V sync level @ 75 Ω, output impedance 75 Ω

Generated audio clock rates Every audio clock rate from 32.0 kHz to 768.0 kHz and 8.192 MHz to 24.576 MHz

(for ProTools),

AES/EBU SYNC OUTPUT

Interface 1 x XLR male, transformer balanced, 4 Vpp @ 110 Ω, output impedance 110 Ω,

individually buffered

Formats AES/EBU 11  1997

Resolution 24 bits

Generated audio clock rates Every clock rate from 32.0 kHz to 96.0 kHz

S/PDIF SYNC OUTPUTS

Interfaces 1 x Coaxial (Cinch/RCA female), unbalanced, 0.5 Vpp @ 75 Ω, output impedance 75 Ω,

buffered

1 x optical, Toshiba ToslinkTM, EIAJ RC-5720

Format IEC 60958 blank frame

Resolution 24 bits

Generated audio clock rates Every clock rate from 32.0 kHz to 96.0 kHz

INTERNAL REFERENCE OSCILLATOR SPECIFICATIONS

Oscillator type TCXO, temprature com pensated crystal oscillator, burned-in and pre-aged

Clock accuracy (shipped) < ± 1.0 ppm, aligned to AES 11, grade 1

Operating temperature - 10°C to + 60°C

FREQUENCY SYNTHESIS PROCESSING

Frequency synthesis Digital synthesized phase-locked-loop (PLL)

Audio clock synthesis 21 different clock rates from 32.0 kHz to 768.0 kHz and 8.192 MHz to 24.576 MHz directly

coupled to TCXO

Pull up / pull down synthesis + 0.1%, - 0.1%, + 4,1666%, - 4.0%

VIDEO GENERATOR SPECIFICATIONS

Generated video formats PAL 25 fps, 625 lines, black + burst or composite sync

NTSC 29,97 fps, 525 lines, black + burst or composite sync

Specifications 300 mVpp ± 7 mV burst level @ 75 Ω

300 mVpp ± 7 mV H/V sync level @ 75 Ω

POWER SUPPLY

Type Internal, transformer based power supply

Input voltage 115 V / 230 V (switchable from outside), 50 Hz / 60 Hz

Power consumption max. 10 W

SYSTEM UNIT COVER

Cover size / material / color 196 x 42 x 156mm (W x H x D), aluminium 1mm, black

Front panel size / material 198 x 44 x 2mm (W x H x D), aluminium

Weight ~ 1320g without P/NVSG-01

~ 1340g with P/NVSG-01

OPTIONS

P/NVSG-01 PAL + NTSC black or black + burst composite sync video generator for SMART CLOCK,

ordering-no. 8010-005

MW-01/19 Set of rack mounting angels for one device, ordering no. 8040-005

Optical cables Different lenghts between 0.5 m  20.0 m

Mutec SMART DIGITAL SMART CLOCK User manual

Popular Recording Equipment manuals by other brands