Page 1 2-Channel Magneto-Optical Disk Recorder, SW Version 1.6 1. General 2. Operating Elements 3. Quick Start Guide 4. Operation 5. Troubleshooting 6. Circuit Description/Jumper Setting – D424 7. Circuit Description/Jumper Setting – Desktop Controller 8. Diagrams 9. Appendix Operating and Service Instructions...
Page 2 Copyright by Studer Professional Audio AG Studer Professional Audio AG Printed in Switzerland Technical Documentation Order no. 10.27.3811 (Ed. 0202) Althardstrasse 30 CH-8105 Regensdorf – Switzerland http://www.studer.ch Subject to change Studer is a registered trade mark of Studer Professional Audio AG, Regensdorf...
Page 3 SAFETY / SECURITE / SICHERHEIT To reduce the risk of electric shock, do not remove covers (or back). No user-serviceable parts inside. Refer servicing to qualified service per- sonnel. Afin de prévenir un choc électrique, ne pas enlever les couvercles (où l’arrière) de l’appareil.
Page 4 SAFETY / SECURITE / SICHERHEIT FIRST AID PREMIERS SECOURS ERSTE HILFE (in case of electric shock) (en cas d'électrocution) (bei Stromunfällen) 1. Separate the person as quickly as 1. Si la personne est dans l'impos- 1. Bei einem Stromunfall die be- possible from the electric power sibilité...
Page 5 SICHERHEIT / SAFETY Installation Installation Vor der Installation des Gerätes müssen die hier aufgeführ- Before you install the equipment, please read and adhere to ten und auch die weiter in dieser Anleitung mit the following recommendations and all sections of these bezeichneten Hinweise gelesen und während der Instal- instructions marked with lation und des Betriebes beachtet werden.
Page 6 SICHERHEIT / SAFETY Zugentlastung für den Netzanschluss Mains connector strain relief Zum Verankern von Steckverbindungen ohne mechanische For anchoring connectors without a mechanical lock (e.g. Verriegelung (z.B. IEC-Kaltgerätedosen) empfehlen wir die IEC mains connectors), we recommend the following ar- folgende Anordnung: rangement: Vorgehen: Der mitgelieferte Kabelhalter ist selbstklebend.
Page 7 Abschnitten beschrieben. Umgebungstemperatur Ambient temperature Geräte und Systeme von Studer sind allgemein für einen Um- Units and systems by Studer are generally designed for an gebungs-Temperaturbereich (d.h. Temperatur der eintretenden ambient temperature range (i.e. temperature of the incoming Kühlluft) von +5...+40 °C ausgelegt.
Page 8 UMGEBUNGSBEDINGUNGEN / AMBIENT CONDITIONS Vor der Inbetriebnahme muss das System auf allfällige interne Before putting into operation, the system must be checked for Betauung oder Eisbildung überprüft werden. Nur bei sehr internal formation of condensation or ice. Only with a minute leichter Eisbildung kann mit direkter Verdunstung (Sublimati- formation of ice, direct evaporation (sublimation) may be ex- on) gerechnet werden;...
Page 9: Maintenance And Repair
WARTUNG / MAINTENANCE Wartung und Reparatur Maintenance and Repair Durch Entfernen von Gehäuseteilen, Abschirmungen etc. The removal of housing parts, shields, etc. exposes ener- werden stromführende Teile freigelegt. Deshalb müssen u.a. gized parts. For this reason the following precautions should die folgenden Grundsätze beachtet werden: be observed: Eingriffe in das Gerät dürfen nur von Fachpersonal unter...
Page 10 WARTUNG / MAINTENANCE Elektrostatische Entladung (ESD) Electrostatic Discharge (ESD) bei Wartung und Reparatur during Maintenance and Repair Observe precautions for handling devices sensitive to elec- ATTENTION: trostatic discharge! ATTENTION: Respecter les précautions d’usage concernant la mani- pulation de composants sensibles à l’électricité statique! ACHTUNG: Vorsichtsmassnahmen bei der Handhabung von ESD- empfindlichen Bauelementen beachten!
Page 11 Abbildung weiter unten. Bei Studer werden keine handelsüblichen SMD-Bauteile Studer does not keep any commercially available SMD bewirtschaftet. Für Reparaturen sind die notwendigen Bau- components in stock. For repair the corresponding devices teile lokal zu beschaffen. Die Spezifikationen von Spezialb- should be purchased locally.
Page 12: Electromagnetic Compatibility
EMV / EMC Störstrahlung und Störfestigkeit Electromagnetic Compatibility The equipment conforms to the protection requirements Das Gerät entspricht den Schutzanforderungen auf dem Gebiet elektromagnetischer Phänomene, wie u.a. in den relevant to electromagnetic phenomena that are listed in the guidelines 89/336/EC and FCC, part 15. Richtlinien 89/336/EWG und FCC, Part 15, aufgeführt: 1.
Page 13: Ce Declaration Of Conformity
CH-8105 Regensdorf, CH-8105 Regensdorf, erklärt in eigener Verantwortung, dass das Produkt declares under his sole responsibility that the product Studer D424, 2-Channel Professional MO-Disk Recorder, Studer D424, 2-Channel Professional MO-Disk Recorder, (ab Serie-Nr. 101), (on from serial No. 101), auf das sich diese Erklärung bezieht, entsprechend den Be- to which this declaration relates, according to following stimmungen der EU-Richtlinien und Ergänzungen...
Page 14: Table Of Contents
D424 MO Recorder CONTENTS General..................................E1/1 MO Recording ..............................E1/1 The Medium – Magneto-Optical Disks......................E1/2 1.2.1 Disk Standards..............................E1/2 1.2.2 Disk Formatting ..............................E1/3 1.2.3 Disk Capacities ...............................E1/3 1.2.4 Disk Handling..............................E1/4 File Systems, File Formats, Audio Files ......................E1/5 1.3.1 Takes, Indices, and Sequences........................E1/5 1.3.2...
Page 15 CD Transfer and Disk Copies........................... E3/10 3.7.1 Before you Start the Transfer ........................E3/10 3.7.2 Creating a CD with an External SCSI CD Writer (e.g. Studer D741) ............E3/10 3.7.3 Copying a CD to the D424 ........................... E3/11 3.7.4 Copying to/ from Other MO Disks....................... E3/11 Working with Timecode...........................
Page 16 Editing a Sequence ............................E4/22 CD Transfer and Disk Copies .......................... E4/24 4.7.1 Configuration..............................E4/24 4.7.2 Transfer to a CD Writer..........................E4/24 4.7.3 Copying a CD to the D424 ...........................E4/26 4.7.4 Copying to/from Other Disks........................E4/27 4.7.5 Transfer Parameters ............................E4/28 4.7.6 SCSI Addresses ............................E4/29 Backup Copies ..............................
Page 17 Fader Start ..............................E4/47 4.13 Serial Remote Operation ..........................E4/48 4.13.1 Command List .............................. E4/48 Troubleshooting................................E5/1 Error Messages..............................E5/1 Modifying the D424 SCSI Address........................E5/3 D424 - Circuits, Jumper Setting ..........................E6/1 Motherboard............................... E6/1 6.1.1 Clock Regeneration ............................E6/1 6.1.2 Time Code..............................E6/2 6.1.3...
Page 18 D424 MO Recorder Diagrams....................................Appendix..................................E9/1 Serial Remote Protocol ............................E9/1 9.1.1 RS422 9-pin Protocol (Sony-Compatible)......................E9/1 9.1.2 Communication Format ..........................E9/1 9.1.3 Hardware Layer ..............................E9/2 9.1.4 Messages.................................E9/2 9.1.5 Command List..............................E9/4 9.1.6 Command Messages ............................E9/5 Drive Installation Instructions..........................E9/7 9.2.1 MO Drive Kit 2.6 GB (ISO) ...........................E9/7 9.2.2...
Page 19: General
Removable medium with very good archiving characteristics and the capa- bility for direct access editing, the Studer D424-2 MO recorder has been designed to be integrated into today's and future environments, combined with analog and digital audio processing and automation. It is ready to follow the rapid evolution of re- cording technology, without neglecting the needs of the professional user.
Page 20: The Medium - Magneto-Optical Disks
40 minutes. In order to start recording, the D424 only has to add the basic system files. Building up a DOS system and installing the basic D424 files is called “...
Page 21: Disk Capacities
D424 MO Recorder 1.2.3 Disk Capacities Depending on disk type, sampling rate, and recording format, the record- ing capacity will vary. The following table shows some examples of the recording capacities (stereo, per side): Disk type 44.1 kHz / 16 bit...
Page 22: Disk Handling
The MO drive will automatically assign spare blocks for storing the affected audio information. The D424 will check a disk when set to RECORD READY. A warning message will be displayed if more than 60 grown defective sectors were found.
Page 23: File Systems, File Formats, Audio Files
By using the same file system and formats as MS-DOS based computer platforms, disks that were recorded with a D424 can be played by all DOS based systems – from simple multimedia computers to fully professional audio workstations.
Page 24 D424 MO Recorder Takes, Indices: Insert a new, empty disk, set the channels ready, and press REC+PLAY. The first take in the initial sequence 1 will be recorded. Each time you start recording, a new take is created, which is given a numbered take marker at its beginning automatically.
Page 25: Non-Destructive Editing
1.3.2 Non-Destructive Editing The D424 is providing non-destructive editing. Because all editing proc- esses are simply instructions on how to play the original sound files, the original audio data remain untouched during the whole editing process.
Page 26: Utilization For The Purpose Intended
D424 MO Recorder Utilization for the Purpose Intended The Studer D424 is a Disk recorder intended for professional use. It is designed for recording on MO disks. It is presumed that the unit is operated only by trained personnel. Servic- ing is reserved to skilled technicians.
Page 27: Adjustments, Repair
The primary fuse (F 4 A H 250 V, 5 × 20 mm) is located inside the unit. Therefore only skilled technicians are authorized to replace the fuse. 1.6.4 Accessories, Options Accessories Shipped with the D424: 1 Operating manual (English) Order No. 10.27.3803 1 Female mains connector (IEC 320/C 13) Order No. 54.42.1050 1 MO Disk 1 Hexagon pin spanner 2.5 mm...
Page 28: Connector Field
D424 MO Recorder 1.6.5 Connector Field [11] SERIAL VIDEO OUT 1 75 Ω Ω Ω Ω CONTROLLER LINE OUT 2 SCSI-2 CONTROLLER WORDCLOCK 75 Ω Ω Ω Ω PARALLEL IN 1 LINE AES/EBU SYNC AES/EBU 100 - 240 V C A U T I O N...
Page 29: Connector Pin Assignments
D424 MO Recorder 1.6.6 Connector Pin Assignments Signal INPUT/OUTPUT LEFT/RIGHT Ground Line A ("hot") Line B ("cold") XLR-3f XLR-3m Signal AES/EBU DIGITAL IN/OUT Ground Line A ("hot") Line B ("cold") XLR-3f XLR-3m SERIAL 9 pin D-type, female Signal Function FGND...
Page 30 D424 MO Recorder PARALLEL 15 pin D-type, female Signal Function B_TAKE Take pulse B_INDEX Index pulse B_PLAY Play tally S_STOP Stop command S_PLAY Play command S_PLOC Ploc command FADER1 Fader start input 1 Ground B_STOP Stop tally B_READY D424 ready...
Page 31: Technical Specifications
Technical Specifications (Subject to change as technological progress may warrant) 1.7.1 Drive System The D424 is equipped with an ISO standard 2.6 or 5.2 GB drive supporting the following 5¼" disk standards: 2 × WO 1.2 / 1.3 GB 512/1024 bytes/sector 4 ×...
Page 32: Synchronization
1.7.7 Control Interfaces • Desktop Controller interface For multi-machine configurations, providing sample-accurate synchron- ization between up to three D424 units (RS422, 15 pin D-type) • System remote interface With proprietary or SONY 9 pin protocol (RS422, 9 pin D-type) •...
Page 33: Power Supply
D424 MO Recorder 1.7.8 Power Supply Power Requirements 100...240 VAC ±10%, 50...60 Hz, 1.4...0.6 A 1.7.9 Operating Conditions Ambient Temperature: +5...+35 °C Rel. Humidity: 10...80%, non-condensing Operating Position: horizontal ±10° 1.7.10 Standards Safety Standard: Protection class 1, EN 60950; 1992 + A1/A2; 1993 Class 1 laser product, EN 60825-1;...
Page 34: Syntax Used In This Manual
D424 MO Recorder Syntax Used in this Manual [COMMAND] Keyboard entries are indicated in bold printing and within [ ] brackets. [PLAY] “ PLAY” key. [REC+PLAY] Double key combination: [REC] is pressed first and, as long as [REC] is pressed, [PLAY] is pressed additionally.
Page 35: Operating Elements
D424 MO Recorder OPERATING ELEMENTS [39] [41] [40] [27] [28] [29] [35] [43] [19] [18] [37] [42] [38] [36] [34] D 424 MO RECORDER DISK RECORDER SERIES POWER PEAK RESET OVER –2 –5 TIME–FORMAT– TAKE –7 –10 –14 –20 SETUP –30...
Page 36: 2.1 General
[16] CHASE In chase mode, the D424 is following the external timecode. [17] LOOP In loop mode the D424 plays the element between the IN and OUT point repeatedly. [18] LED Level Meter Displays input or disk level, either in peak or in peak hold mode.
Page 37: Editing Section
Inserts the source element at the position defined with the target IN point. [30] UNDO The D424 reverts to the status before the last editing process. [31] PREVIEW In editing modes (source or target LED on), [PREVIEW] followed by a...
Page 38: Display And Menu Section
Additional Functions (Desktop Controller only) [44] UNIT 1...3 For assigning one of up to three D424 units to the Desktop Controller. [45] VOL1, VOL2 For modifying the analog input attenuation for the two channels together with the control wheel.
Page 39: Getting Started Quickly
D424 (LINE IN 1/2) with XLR cables. Insert a write-enabled disk with sufficient free recording space (see step 7). Check the status of the D424 in the fourth display line. There, sampling rate, recording format, clock reference, audio input, and recording mode are indicated.
Page 40: Recording New Takes From A Digital Source
D424 (AES/EBU IN) with an XLR cable. Insert a write-enabled disk with sufficient free recording space (see step 6). Check the status of the D424 in the forth line of the display. It indicates sampling rate, recording format, clock reference, audio input and recording mode.
Page 41: Playing Pre-Recorded Disks
In CUE mode, the D424 follows the control wheel position with a speed up to 2 times nominal speed. In SHUTTLE mode, the D424 moves with a constant speed set with the control wheel.
Page 42: Locate
D424 MO Recorder 3.3.6 LOCATE Find a particular position in a sequence with the locate function. Locating is available to sequence, take, and index positions as well as to register lo- cations having been set in advance. Examples: [LOC] [PREV] – locate to begin of sequence [LOC] [NEXT] –...
Page 43: Editing
D424 MO Recorder Editing 3.4.1 Before You Start Editing • Verify that there is a write-enabled disk inserted. • The sequence currently selected will be modified. If you have already ed- ited a part of the sequence and you would like to keep the current version, start editing with a copy of the sequence.
Page 44: Move Or Duplicate An Element - Insert Editing
D424 MO Recorder 3.4.3 Move or Duplicate an Element – Insert Editing For moving or duplicating an element of the current sequence: • define a source element to be moved or duplicated, by setting the edit registers SOURCE IN and OUT, •...
Page 45: Insert Recording
Start playing ahead of the section to be replaced, wait until the correct position is reached, and then make record punch-in with a [REC+PLAY] command, or park the D424 at the punch-in location and start recording with [REC+PLAY]. Perform a punch-out with [PLAY] or [STOP].
Page 46: Working With Sequences
D424 MO Recorder Working with Sequences There may be several sequences on a disk. Only one of them can be se- lected as the current sequence. All modifications resulting from editing or sequence processing only change the sequence data that are kept with each sequence. They do not modify or delete the audio information.
Page 47: Copy A Sequence
D424 MO Recorder Adding additional takes: Select the take to be copied from the source sequence, and the insert posi- tion in the target sequence: [3] [TARGET] [5] [INSERT] – Insert take 3 from the source sequence, after take 5;...
Page 48: Cd Transfer And Disk Copies
Make sure that the two units have not the same SCSI address. The default address of a D424 is “ 1” , the one of the Studer D741 is “ 2” . Refer to the corresponding section in the operating manual of the device for changing SCSI addresses.
Page 49: Copying A Cd To The D424
D424 MO Recorder 3.7.3 Copying a CD to the D424 The contents of a CD can be copied to a new sequence on the D424 disk, including all track and index markers. • Check the inserted disk: it should not be write protected, have sufficient free capacity for adding the CD information, and the format must be CD compatible (44.1 kHz sampling rate).
Page 50: Working With Timecode
Chase LED is On: Chase mode is on, D424 runs synchronously in PLAY mode. Chase LED is Flashing: Chase mode is on, but D424 waits because the master is not in PLAY mode (STOP or fast forward/rewind). • An offset can be applied by storing a value (±12 hours) into the nominal offset register.
Page 51: The Desktop Controller
Installation and Settings Use the controller cable to connect the desktop controller to one of the two controller ports at the rear side of the D424. Connect further units with separate sync cables. The second connector of the last recorder must be terminated (termination plug).
Page 52: 3.10 The Parallel Port With Fader Start Operation
• Enable fader start operation with setup menu 45. • When applying a control voltage at the fader input pins, the D424 will start, releasing the control signal will result in a STOP. Note: During fader play operation, the local keyboard is disabled.
Page 53: 3.11 The Setup Menu
D424 MO Recorder 3.11 The Setup Menu The [SETUP] command is used for entering the setup mode, in order to change parameters and to perform a number of utilities. Navigation within a menu is done numerically or with the cursor keys: [SETUP] [3] [1] –...
Page 54: Operation
RAM or on the disk. The default values of the D424 have been chosen for easy and safe operation. After switching on the D424 for the first time, or after restoring the factory default values, the D424 is ready to be operated and to record from analog sources.
Page 55: Audio Input
AES/EBU input, or “ analog” for recording analog line signals at the LINE IN connectors. Notes: The D424 has to be equipped with the analog I/O option for analog re- cording and playback. Check the correct synchronization of digital sources and the D424 if re- cording digital audio.
Page 56: Other Parameters
D424 MO Recorder • If the D424 is integrated into a system with video and digital audio equip- ment, use a stable composite video reference as master for all machines. Switch the D424 to Video Mode. • If a common high quality reference is available in a digital environment, use the corresponding Digital Mode.
Page 57: Display And Register Functions
D424 MO Recorder Display and Register Functions 4.2.1 Display Information and Formats The standard display shows various information on 4 lines. Line 1 • The position indicator at the top of the display is indicating the current position, relative to the selected sequence. It allows to see roughly where the recorder is, when controlling it with the transport commands.
Page 58 D424 MO Recorder Line 4 The bottom line indicates the status of the main configuration and the cur- rent take parameters: Sampling Rate 44D 441 48D 48 Sampling frequencies include 44.1 kHz (441), 48 kHz (48) as well as the drop-frame formats 44.056 kHz (44D) and 47.952 kHz (48D).
Page 59: Using General Purpose Registers
D424 MO Recorder 4.2.2 Using General Purpose Registers There are several memory and editing registers that can be selected and modified. After being selected, a register may be modified or cleared with the numeric keypad, any changes are confirmed with the [ENT] key.
Page 60: Basic Transport Operation
D424 MO Recorder Basic Transport Operation The following basic transport commands allow to navigate the D424 to any point within the current sequence, and to playback audio files: [PLAY] starts playback at the current position [STOP] stops recorder at the current position...
Page 61 D424 MO Recorder The current position within the sequence is indicated by a running indica- tor sign in the first line of the display. The far left position corresponds to the sequence start, the far right to the sequence end.
Page 62: Playback And Stop
CUE Mode SHUTTLE Mode In the CUE mode, the position of the D424 is directly coupled with the control wheel. As with the reel of a tape recorder, a direct and precise tool for audible positioning is provided. It allows to search for a particular po- sition by moving the D424 with the control wheel.
Page 63: Locating To A Random Position
[ENT], with [STOP], or with [PLAY]. [LOC] [2] [PLAY] – will start playing at take no. 2 [LOC] [5] [ENT] – will park the D424 at the beginning of take no. 5 For accessing indices, simply add the index number: [LOC] [7] [IND] [2] [PLAY] –...
Page 64: Recording
D424 MO Recorder Recording The D424 has been designed to offer the well-known recording techniques from a tape recorder. But with a non-linear recording medium, new fea- tures in recording and editing become available. The D424 offers different recording modes, each offering certain advantages and flexibility.
Page 65: Channel Assignments
If at least one channel is set to READY, and a [REC] command is given, the D424 will start ahead of the IN point. It will show a countdown to the IN point, and a precise insert up to the OUT point is then performed auto- matically.
Page 66: Meters
Insert a disk with the write-protect tab in “ write” position. • Set the D424 to Record Ready. The disk will then be asked for the number of defective blocks, and a warning will appear if it is not in a safe range.
Page 67: Assemble Recording
Insert recording allows to overdub existing recordings. It corresponds to the destructive recording mode of a tape recorder. • Place the D424 to the beginning of the section to be replaced, and start with [REC+PLAY], • listen to the previously recorded material and punch-in on-the-fly with a [REC+PLAY] command.
Page 68: Auto Insert Recording
IN and OUT positions. The mode is started like a normal recording by pressing [REC+PLAY]. The D424 then automatically starts at (IN minus PRE-ROLL). As soon as it is passing the edit points at nominal speed with at least one channel set to READY, a precise punch-in at the IN point and a punch-out at the OUT point are performed.
Page 69: Editing
D424 MO Recorder Editing In addition to the standard recording modes, non-destructive editing is provided. It is possible to cut out or delete a part of a sequence, and to move or copy a source element to any destination. For all editing processes there is a source element that has to be specified.
Page 70: The Cut Function
D424 MO Recorder Searching for a Point Audibly By means of the transport commands – especially with the control wheel – the correct edit position is first searched for. If it has been found, the posi- tion is transferred to the edit register again with the [CAPT] key.
Page 71: The Erase Function
D424 MO Recorder 4.5.3 The ERASE Function For erasing an element, first the source element is defined by setting the IN and OUT registers. An [ERASE] command then deletes all audio infor- mation between the IN and OUT points. Neither the length of the sequence nor the take and index markers between the IN and OUT points are affected.
Page 72: Combined Editing Processes
D424 MO Recorder 4.5.5 Combined Editing Processes Taking the above basic functions, various combinations allow moving and copying elements in a sequence. The source and target modes are mutually exclusive; switching between them is possible at any time with the [SOURCE] and [TARGET] keys.
Page 73 D424 MO Recorder SOURCE TARGET SOURCE INSERT The following functions are provided for INSERT in the target mode: [PREVIEW] [IN] – The pre-roll element before the TARGET IN point is played in target mode. [PREVIEW] [OUT] – The post-roll element following the TARGET IN point is played in target mode.
Page 74: Sequence Editing
D424 MO Recorder Sequence Editing The sequence editing mode allows to select, create, and edit user se- quences. It is selected with the [SEQ] key. The display changes to the sequence select mode, first waiting for a se- quence number. The ones available on the inserted disk are listed at the top.
Page 75: Editing A Sequence
D424 MO Recorder 4.6.4 Editing a Sequence The sequence to be edited – either an existing one, or a new, empty one – is selected by typing in the corresponding number (or nothing) followed by [SOURCE] or [TARGET]. As default, the source sequence from where takes can be copied will be the table of contents of the current disk (sequence 0).
Page 76 D424 MO Recorder Examples: Insert take 3 from sequence 2 after take 4 in sequence 3: [SEQ] [3] [u u u u ] [2] [SOURCE] – define sequences and enter editing mode [3] [TARGET] [4] [INSERT] – define takes and insert.
Page 77: Cd Transfer And Disk Copies
Make sure that the two units do not have the same SCSI address. The de- fault address of a D424 is “ 1” , the one of the Studer D741 is “ 2". See the corresponding manual section of the device for changing SCSI addresses.
Page 78 Do not interrupt a SCSI transfer by disconnecting or switching off one of the two units. The current session on the CD-R might be damaged. The D424 will check if the CD-R has sufficient capacity for doing a disk- at-once transfer of the current disk. An ERROR message will appear if the sequence is too long.
Page 79: Copying A Cd To The D424
D424 MO Recorder 4.7.3 Copying a CD to the D424 The contents of a CD can be copied to a new sequence on the D424 disk, including the track information. What will be Transferred? The following transfer modes are available: The complete CD will be copied into a new sequence on the target disk.
Page 80: Copying To/From Other Disks
D424 MO Recorder 4.7.4 Copying to/from Other Disks Sequences and complete disks can be copied from the internal drive to additional, external drives. What will be Transferred? The following transfer modes are available: DISK COPY Will copy the complete disk. The target disk has to be empty; reformat it first, if necessary (setup utility 53).
Page 81: Transfer Parameters
D424 MO Recorder 4.7.5 Transfer Parameters There is a number of transfer parameters that can be modified to meet the requirements of different applications. All settings can be accessed in the TRANSFER PARAMETER menu 64. Noise Shaping (Menu 641) For making best use of high quality recordings in 20 or even 24 bit resolu- tion, it is possible to apply the noise shaping algorithm to audio informa- tion for transfer to 16 bit media.
Page 82: Scsi Addresses
D424 core board is on address “ 7” , the default address of the internal MO drive is “ 1” . The default address of the Studer D741 CD recorder is “ 2” . The address of an additional external drive may be set to any address be- tween 1 and 6, except the address of the D424's internal drive.
Page 83: Backup Copies
We recommend, as with any other computer-based data processing program, to perform backups on a regular basis. There are two backup methods with the D424. 4.8.1 Sequence Backup With a sequence backup, the sequence file with all the editing information is simply copied onto the same disk.
Page 84: Disk Backup
For setting up the system, the following steps are required: • Switch off both units and install the SCSI cable between both units. The termination of the destination drive must be on. In case of the D424, ter- mination is provided automatically. •...
Page 85: Data Exchange With Sadie ® Workstations
The EDL files with all the editing and disk structure information can be shared between the two products. It is therefore possible to record and edit on a D424, do some more so- phisticated editing on the DAW, and play the final product again on a D424 without loosing the editing information.
Page 86: Importing Sadie Disks To The D424
“ unlog disk” . • The disk can now be inserted to the D424. It will automatically detect the interchange file and reconvert it to a standard sequence file. You can switch to the new sequence by typing [SEQ] and selecting the new se- quence file.
Page 87: 4.10 Setup Menu
D424 MO Recorder 4.10 Setup Menu 4.10.1 Accessing and Modifying Menu Items With [SETUP] the display changes to the setup mode, where different types of parameters and functions are available. The same key is used to leave the setup mode again.
Page 88: Overview
D424 MO Recorder 4.10.2 Overview Menu Item Display Meaning Parameters CONFIG System configuration S.FREQ Sampling frequency 44.056, 44.1, 47.952, 48 kHz S.WORD Sample resolution 16, 20, 24, 24L bits Timecode format 24, 25, 29.97DF, 30, NONSTD RECMODE Record mode stereo, mono...
Page 89: Menu 1, Config (System Configuration)
13 TC Timecode Format The D424 provides SMPTE/EBU timecode at its TC OUT connector. The provided format can be changed at any time, it does not depend on the re- corded information. Once selected, the TC format is used for providing timecode and as display format.
Page 90: Menu 2, Ref & Inp (Reference & Input Parameters)
16 DEFAULT Configuration settings The D424 configuration settings can be stored into a user memory. If the settings were changed, they can be restored with a few keystrokes. [SETUP] [1] [6] [2] – Store the current settings (confirm with “ yes” ).
Page 91: Menu 3, Audio (Audio Parameters)
Digital Playback Level When transferring digital audio signals to external devices, it might be necessary to adjust the overall playback level. The D424 provides a func- tion to modify the playback level in the digital domain. There is a separate setting for each channel.
Page 92: Menu 4, Transport (Transport & Display Parameters)
Playback is performed with varispeed Range: ±12.5 %, in 0.5 % steps. 43 AUTO Auto Stop When activated, the D424 will automatically stop at each new take begin. 44 PRE/POST Pre-roll/Post-roll When previewing edit processes or performing auto records, pre-roll and post-roll times are used.
Page 93: Menu 5, Disk (Disk & Sequence Utilities)
52 SCSI SCSI Offline In SCSI offline mode, a D424 is configured as a single MO drive; all in- ternal functions are disabled. As a slave, it can be connected to any SCSI- based controller that supports the 2.6 GB ISO drive, like a master D424 or a suitable digital audio workstation.
Page 94 D424 MO Recorder 55 REN-SEQ Renumber Sequence During editing, take numbers stay with the corresponding audio informa- tion, whereas indices always are renumbered to have an ascending order. At the end of a production, it might be helpful to reassign take numbers to the current sequence.
Page 95: Menu 6, Copy (Copy Utilities)
See menu 64 for more details. Copying CDs to the D424 When selecting the CD writer as source drive and the D424 as target, sin- gle tracks (add mode) or complete CDs (toc mode) can be transferred in a new sequence on the MO disk. Each track is copied to a separate sound file, the sequence also includes the track numbers.
Page 96 D424 MO Recorder 64 XFER PAR Transfer Parameters The following parameters (641...646) apply to MASTER COPY transfers. 641 SHAPING Noise Shaping For making best use of high quality recordings in 20 or 24 bit resolution, it is possible to apply the noise shaping algorithm on audio information transferred to 16 bit media.
Page 97: Menu 7, Service (Service Utilities)
Fixup Disk ® The FIXUP utility creates the necessary files required for SADiE com- patibility. The D424 sequence file is replaced by an interchange file that ® can be interpreted by SADiE . Remove the disk after the fix-up process.
Page 98: 4.11 Desktop Controller
D424 MO Recorder 4.11 Desktop Controller The Desktop Controller is an ergonomic alternative to the D424's standard front panel. It can be placed on a desk or a mixing console, and has a stan- dard size to be built into a console. See fold-out page, section 2. In addi-...
Page 99: 4.12 Parallel Port And Fader Start Operation
Indicates new take marker. A pulse signal is generated when a take B_TAKE marker is passed in play mode. B_STOP Stop tally, active when D424 is in Stop mode B_PLAY Play tally, active when D424 is in Play mode B_READY...
Page 100: Fader Start
• Fader start operation is enabled with setup menu 45. • The D424 is ready for playback, i.e. a disk with a playable sequence is inserted. If the above conditions are met, the fader ready signal (GPI pin10) is ac- tive, indicating that fader start signals will be accepted.
Page 101: 4.13 Serial Remote Operation
D424 MO Recorder 4.13 Serial Remote Operation The serial remote control specification for the D424 is intended for appli- cations where the D424 is controlled by equipment using the SONY RS- 422 standard. The D424 provides a basic subset of the complete function- ality.
Page 102: Troubleshooting
• Insert appropriate CD-R "Drive not mounted" D741 CD drive not ready for transfer • Check for correct SCSI wiring SCSI drive has been connected to a D424 currently not "Drive not supported" Remove SCSI device supported Move edit points, or modify previously made edit that "Editing in fade area"...
Page 103 (cont.): "XFadetime too long" Two fade areas overlapping Reduce cross-fade time "Sample slip" Digital audio input not synchronous with system clock Check synchronization of external source with D424 Hardware errors: Problem: Solution: "0A: Restart device" "0D: Restart device" Switch off system and retry Fatal internal errors "6E: Restart device"...
Page 104: 5.2 Modifying The D424 Scsi Address
D424 MO Recorder 5.2 Modifying the D424 SCSI Address If connecting several D424 MO recorders with a SCSI cable, the address of additional units has to be adapted. SCSI address Pin 1 Pin 2 Pin 3 n.a. n.a. n.a. •...
Page 105: D424 - Circuits, Jumper Setting
D424 MO Recorder D424 – CIRCUITS, JUMPER SETTING Motherboard 1.866.120 The Motherboard is designed to carry assemblies, as the Core and A/D- D/A converters. For audio interfaces, two slots are available. It contains the following modules: • Clock generation (internal/external reference) with input and output drivers (word clock with selectable termination) •...
Page 106: Time Code
(IC28). With the controller (IC2) and the Dual Ported RAM (IC11) the audio data are buffered and converted to the appropriate format for the monitor D/A converter (IC17), for the AES/EBU receiver (IC5) and the AES/EBU transmitters (IC4). E6/2 D424 - Circuits SW V 1.6 Date printed: 06.03.02...
Page 107: Desktop Controller
24 V if JP4 and JP5 are linked n.c. if JP5 and JP6 are linked 3. DIP Switch (DS1) Spare Spare Spare Baud rate (off position used for factory tests only) D424 - Circuits E6/3 Date printed: 06.03.02 SW V 1.6...
Page 108: Core
On units without a front panel operating surface this has to be done with DS1 (on from SW version 1.2). The controller interface can be selected for operation with the Studer Desktop Controller or with a customer-specific remote control; for this purpose DIP switch No.
Page 109: A/D-D/A Board
The vacuum fluorescence display (VFD, 4 × 20 digits) is driven from a mask-programmed 80C52 (IC11) via high-voltage drivers (IC 1...10). It is connected to the front processor on the Motherboard via a parallel inter- face. D424 - Circuits E6/5 Date printed: 06.03.02 SW V 1.6...
Page 110: 6.6 Connector Pin Assignments
JP3 connected) S_STOP Stop command S_PREV Previous command S_PLAY Play command S_NEXT Next command S_PLOC Locate command (to last play start position) FADER2 Fader start input FADER1 Fader start input E6/6 D424 - Circuits SW V 1.6 Date printed: 06.03.02...
Page 111: Desktop Controller - Circuits, Jumper Setting
D424 MO Recorder DESKTOP CONTROLLER – CIRCUITS, JUMPER SETTING Remote Keyboard 1.866.510 The Remote Keyboard is connected to the Remote Control PCB via a flat cable; it houses all the keys, the LED indicators, and the peak meter. IC3 is controlled via the 68HC11’s data bus on the Remote Control PCB, and it...
Page 112 D424 MO Recorder CIRCUIT DIAGRAMS Board Locations and Interconnections Block Diagram Mother Board Mother Board ................. 1.866.120 Block Diagram SCSI Core SCSI Core..................1.866.130 SCSI Core..................1.866.131 Block Diagram Analog Input/Output Analog Input/Output ..............1.866.140 Block Diagram Display Board Display Board................. 1.866.150 Block Diagram Keyboard Keyboard ..................
Page 181: Appendix
The following remote control specification for the D424 is intended for applications where basic functions compatible with the “ Sony 9-pin stan- dard” are required. It provides a subset of the complete D424 functional- ity. In addition to the standard commands, an extension was made to allow addressing of takes and indices instead of timecode and tape counter pa- rameters only.
Page 182: Hardware Layer
CHKS Byte 1 Command byte 1 (CMD 1) The upper 4 bits of byte 1 indicate the command group and the communi- cation direction. From controller to D424: System control command Transport command Preset/select command Data request From D424 to controller:...
Page 183 D424 MO Recorder Byte 2 Command byte 2 (CMD 2) The second command byte specifies a particular command (see command list) Byte 3... Data bytes (DATA 1...DATA n) Up to 15 data bytes may be added to a command, indicated by the data count in byte 1.
Page 184: Command List
D424 MO Recorder 9.1.5 Command List Command from controller Response D424 Comment CMD 1/2 Data CMD 1/2 Data NAK response error STOP PLAY RECORD FFWD shuttle at max. speed shuttle at max. speed SHTL FWD speed SHTL REW speed CUE UP WITH DATA...
Page 185: Command Messages
0 insert assemble insert, assemble: correspond to D424 recording mode TC, A2, A1: are the D424 recording channels TIMER MODE SELECT For setting and reading the timer mode. The selected format is used for TIMER MODE SENSE the CUE UP command and other time position-related commands.
Page 186 Is set when one or more channel is switched to input (with EDIT PRESET and SELECT EE ON). edit Is set when the D424 enters an assemble or insert recording mode with the EDIT ON command. cueing up “ 1” during CUE UP mode insert “...
Page 187: Drive Installation Instructions
The new brackets are part of the upgrade kit and allow the instal- lation of a wide variety of drives. The new ISO drive is mounted from the front of the D424, by sliding it through the front panel opening and attaching it with the 4 corresponding screws at the brackets.
Page 188: Mo Drive Kit 5.2 Gb (Iso)
Disconnect the power cable and the SCSI ribbon cable from the rear side of the currently installed drive. The new ISO drive is mounted from the front of the D424, by sliding it through the front panel opening and attaching it with the 4 corresponding screws at the brackets.
Page 189: Hardware Configuration (Jumper And Dip Switch Settings)
On units without a front panel operating surface this has to be done with DS1 (on from SW version 1.2). The controller interface can be selected for operation with the Studer Desktop Controller or with a customer-specific remote control; for this purpose DIP switch No.

Studer D424 Operating And Service Instructions

1 General

2 Operating Elements

3 Getting Started Quickly

4 Operation

5 Troubleshooting

6 D424 - Circuits, Jumper Setting

7 Desktop Controller - Circuits, Jumper Setting

8 Diagrams

9 Appendix

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