Manuel d'utilisation / d'entretien du produit BRC du fabricant Alesis
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A L ES I S BRC Reference M a nu a l.
TABLE OF CONTENTS CHAPTER 1 - INTRODUCTION 1.0 ABOUT THE BRC..............................................................................................1 1.1 IMPORTANT NOTES ABOUT THIS MANUAL..........................................................
3.1 FORMATTING TAPES.....................................................................................21 3.1A Additional Formatting Considerations......................................................................................................
4.6A Setting a Song.........................................................................................58 4.6B Naming a Song.......................................................................................60 4.6C Locate Song................
1 CHAPTER 1: INTRODUCTION 1.0 ABOUT THE BRC Congratulations! You’ve just purchased an incredible tool that will assist in streamlining your recording projects. The BRC master remote control is the key element that makes the most of the ADAT digital recording system.
2 • Modular recording. This is the feature that makes ADAT and the ADAT/BRC system perhaps the most flexible multitrack recorder ever designed. Because ADAT’s S-VHS tape format is so inexpensive, you can easily afford to record alternate versions of vocals, solos, background accompaniments; whatever your creative urge requires.
3 • Digital interface and sample rate converter option. If you need to integrate your ADAT recordings to digital recording equipment from other manufacturers, an optional accessory box, the Alesis A.
4 1.1 IMPORTANT NOTES ABOUT THIS MANUAL This manual has been divided into two separate books, of which this is the first. This book is designed as a reference to assist the recording professional in learning the basic operation of the BRC.
5 The BRC can control as many as 16 ADATs for up to 128 tracks. The track select section of the BRC provides access to 32 tracks at any time. Four buttons let you switch between TRACK 1–32, TRACK 33–64, TRACK 65–96 and TRACK 97–128.
6 For more information on Auto-Punch and related controls, see section 4.3. 1.2E Rehearsing This works just like a real recording, but instead lets you “audition” exactly how a punch is going to work.
7 TAPES Analog audio recorders typically move tape past the heads at anywhere from 1-7/8 to 30 inches per second. Higher speeds result in a higher bandwidth , or ability to record high-frequency signals. ADAT’s digital audio signals require much higher bandwidth than analog audio.
8 displaying and editing things like locate points, pre/post-roll times, etc. 1.4B Display Type It is important that you can reference tape positions in a way that you are comfortable with. That’s why we’ve designed the BRC to provide you with three different types of position indicators, so you can choose the one that best suits your needs.
9 the ABSOLUTE and RELATIVE LEDs will both be off. This is because when the Display Type is set to SMPTE, the counter is referenced to the SMPTE Start Offset (see section 5.0B) you have chosen to represent the start position of the current song (see section 4.
10 • To exit from edit mode, press the EDIT button again (the EDIT LED will turn off) and the LCD will return to its state prior to entering edit mode. Pressing a toggle function button now will toggle that function on or off. Note: While in EDIT mode, only the currently selected function’s LED will be lit (along with the EDIT LED).
11 immediately change case. 1.4I NAME Button This button is used to edit the names of Songs and Cues. When you locate a Cue or Song, the name field in the display is not accessible using the cursor buttons. To edit a name, you must press the NAME button to select the name field.
12 current tape location is copied into the currently display locate point (Locate 01–20) or Song Start (01–20). In Manual mode, when the COPY TAPE LOCATION button is pressed, the current tape location is copied to the manual locate point (Locate 00), and the display automatically goes to the Locate 00 page.
13 CHAPTER 2: HOOKUP 2.0 POWER The BRC works with any AC voltage from 90 to 250 volts, 50 to 60 Hz. This eliminates the need for transformers or voltage switches.
14 the ADATs in the middle of the chain, all ADATs following it will no longer sync to the BRC, as the sync information will not pass through a unit that is turned off.
15 Each slave ADAT’s front panel will indicate the status of the record/input enables and transport controls, and the track LED bar graphs to reflect the corresponding track input/tape levels.
16 to the second ADAT’s optical in jack. Its optical out jack then connects to the third ADAT’s optical in jack, and so on; 4. Finally, connect one end of a fiber optic cable to the last ADAT’s optical out jack, and the other end to the first ADAT’s optical in jack.
17 5. When recording audio from AES/EBU or S/PDIF source, the ADAT(s) must be synchronized to the incoming digital signal. This means you will not only need to connect the AI-1 to the digital bus (as described above), but you must also connect the AI- 1’s 48 KHz output to the BRC’s 48 KHz input, using a standard shielded BNC cable.
18 The MIDI input and output connectors are 5-pin DIN jacks. MIDI input is provided for receiving various MIDI messages. MIDI output is provided for generating MTC, MIDI Clock, and system exclusive messages. For more information about MIDI, see section 5.
19 wish to rack-mount the unit using the rack ears included on the BRC. The figure below indicates the rack ears' locations and the screws that mount the end blocks. The front and back end blocks each use three 1" hexagonal screws, while the side end blocks use two 1-1/4" hexagonal screws each.
20 CHAPTER 3: GETTING READY TO RECORD 3.0 POWERING-UP After all connections are made, turn on the power of each ADAT in the system, and then turn on the BRC. Its main power switch is located on the far left side of the back panel, when you are facing the front panel.
21 • If the first ADAT doesn’t have a tape in its drive, the Tape Location counter on the BRC will display "-- -- -- -- --" (the slave ADATs will display "-- --"). • The BRC will query each unit that contains an inserted tape as to its format status.
22 Format Tape A ll If you wish to format all tapes, jump ahead to step 6a. If you wish to perform a selective format, continue to step 3. 3. Press the Right Cursor button; The display will now look like this: Format Tape x x Disable …where XX is a tape machine number 1–16.
23 When performing a format extend, the ADAT begins "time- stamping" from the last valid time-stamp read from the formatted tape. This allows a partially formatted tape to have its format extended by entering format mode before the end of the previously formatted section.
24 formatted part to the previously formatted part, there will be timing discontinuities and the audio will do unpleasant things. Also, during that transition the tape will be non-functional and you will not be able to record anything over it.
25 3.2B Record Enables To record enable a track, press the track’s associated record enable button. The track’s RECORD LED will flash to indicate the track is record-ready. If the transport is put into record mode (see section 3.3C), recording will begin, as indicated by the track’s RECORD LED being steadily lit.
26 previous state, and the record ready buttons will be functional again. 3.2F All Clear This switch is used to place all available tracks into a safe (non-record ready) mode with a single button press.
27 The transport controls resemble those of a conventional tape recorder, although there are several extra features. The main transport functions have been designed to be easily and quickly recognizable by both sight and feel. 3.3A Play Press the PLAY button to play tape(s) (PLAY BUTTON is lit).
28 LED will flash to indicate the tape is disengaged. • Disengage/engage the tape. While the Stop button is lit, press STOP again to disengage the tape (STOP button flashes). While the STOP button is flashing, press STOP again to engage the tape (STOP button is lit).
29 speed, and you can hear chunks of attenuated audio so you know where you are in the tape. The PLAY button will be lit, and the REWIND button will flash. This function is latching, which means that the system will remain in Review mode until a different transport button is pressed.
30 The display shows the current crossfade time as follows: Crossfade Time 1 0.67 ms There are four possible crossfade times: 10.67 ms, 21.33 ms, 32 ms and 42.67 ms. These time values assume a playback rate of 48KHz, and are therefore not exact if the pitch is changed, or an external clock source is used.
31 no track delays are in effect. To display/edit the currently stored track delay times: 1. Press the EDIT button (the EDIT button LED will go on to indicate you are in edit mode); 2. Press the TRACK DELAY button. All the record and input track LEDs will turn off and no longer reflect the current record/monitor status; 3.
32 8. Another track may be selected by pressing the corresponding track button and the above process repeated; 9. To clear all delays, press the ALL CLEAR button while in this page, or the following page; 10 .
33 CHAPTER 4: PITCH, AUTO-LOCATION AND PUNCHING CONTROLS 4.0 PITCH CONTROLS The BRC provides controls over pitch by adjusting the speed the tape is traveling. The Pitch controls include: PITCH MODE, PITCH UP, and PITCH DOWN buttons; the PITCH LED display; and the VARIABLE and FIXED LEDs.
34 4.1 AUTOLOCATION CONTROLS Autolocation is a powerful function of the BRC. It works by specifying up to 20 different locate points, which are referenced to the time code embedded in the tape’s format.
35 beginning of each tape. 4.1B Locate 0 Press this button to have all slave ADATs rewind or fast forward to the 0 point location. Remember, this can be anywhere on the tape since pressing the RESET 0 button resets the tape counter to 00:00 (see section 4.
36 stored into locate point number 20. 2. If you want to edit the location address, press the Right Cursor button to move the cursor to the bottom of the display and use the Numeric Keypad to enter in the desired offset. The cursor will automatically advance through each pair of digits.
37 2. As you listen to the audio playing back, determine which sections of the song you want to create locate points for; 3. Rewind the tape again and engage Play mode; 4. As the tape plays through the song again, press the SET LOCATE button just as the tape reaches the first position you wish to set as a locate point; 5.
38 change a characters case (lowercase or UPPERCASE); 5. Press the NAME button again when finished. Note: If the UP/DOWN buttons are pressed while the NAME button is held down, you can scroll through a default set of 16 pre-stored, generic names (such as “Verse A1”, “Chorus 2”, “Bridge”, etc.
39 point’s address. The address is displayed according to the type of Display Type you have selected. If in NORMAL mode, the display will read 00:00:00 (minutes:seconds:frames). If in SMPTE mode, the display will read 00:00:00:00 (hours:minutes:seconds:frames); if in BARS mode, the display will read 01–01/00 (bars:beats:sub-beats).
40 The display will show the following: L 0 0 " MANUAL " hh:mm:ss:ff This is the manual locate display. The address ( hh:mm:ss:ff ) is displayed according to the type of Display Type you have selected. If in NORMAL mode, the display will read 00:00:00 (minutes:seconds: frames) and the frames will default to 30 frames per second.
41 depending on the setting of the AUTO-PLAY button. • If the BRC is in the process of locating, pressing the Locate/Play footswitch will stop the transport.
42 4. Turn on the BRC. 4.1I Auto-Play Press the AUTO PLAY button to enable Auto Play (its LED will be lit). This causes the BRC to automatically enter Play mode whenever any locate function is complete, although this can be overridden by the transport controls.
43 • If LOOP is turned off after the BRC has reached the Loop End point and has begun rewinding to the Loop Start point, the transport will continue rewinding, without stopping at the Loop Start point. 4.2A Setting Loop Points To set the Loop Start and End points: 1.
44 6. Press the LOOP button to toggle between Loop Start and End point displays. 7. If the desired loop point does not correspond to a stored locate point, the locate point’s tape address may be edited.
45 To perform an Auto-Punch: 1. Set the Punch-In and Punch-Out points (see section 4.3A); 2. Press the AUTO-PUNCH button to enable Auto-Punch; 3. Press PLAY and RECORD while the tape position is before the Punch-In point.
46 1. Press the EDIT button (the EDIT button LED will go on to indicate you are in Edit mode); 2. Press the AUTO-PUNCH button; The display will show the Auto-Punch In point: In X X "LocNamxx".
47 6. Pressing the AUTO-PUNCH button repeatedly will cause the display to toggle between the Punch-In and Punch-Out point displays, and a third display called Auto-Group record (see section 4.3B); 7. If the desired punch point does not correspond to a stored locate point, the locate point’s tape address may be edited.
48 1. Access the third page of the AUTO-PUNCH function by pressing the AUTO-PUNCH button three times; The display will read: Auto-group rec channels by x x …where XX is the number of tracks you wish to record onto at the same time. 2. Put any and all tracks to be recorded on into record-ready by using the TRACK SELECT buttons; 3.
49 • Tracks 5 and 6 record LEDs will be solid, while the LEDs of other record-enabled tracks will be flashing. 4th loop pass: • Auto-punch in and out occurs on track 7 and 8; • Tracks 7 and 8 record LEDs will be solid, while the LEDs of other record-enabled tracks will be flashing.
50 The rear panel Punch In/Out jack accepts any momentary, single pole/single throw footswitch. During power-up, the BRC checks the footswitch to determine whether it is normally open or normally closed type, and calibrates itself accordingly.
51 a point beyond the locate point by the amount you specified, before rewinding. Both the Pre-Roll and Post-Roll times are set in the identical manner. To display and/or edit the Pre-Roll or Post-Roll Time: 1. Press the EDIT button (the EDIT button LED will go on to indicate you are in Edit mode); 2.
52 engaged until play mode is entered or a locate point is recalled. Likewise, when the TAPE OFFSET button is turned off, the ADATs that had been offset do not locate back to the current BRC position until play mode is entered or a locate point is recalled.
53 4. When the desired Offset Mode is selected, press the TAPE OFFSET button again; The second page will now be displayed, which will depend on the type of Offset mode you selected.
54 …where sf:ss is the offset in sub-frames and sample steps. Sub-frames are 1/100th of a frame, ranging from 0–99. Sample steps are divisions of sub-frames.
55 the timecode on tape #1. For example: With the tape position at 05:45:00 and tape #1 offset by 00:30:00, when you turn on Tape Offset the tape position on the BRC will instantly change to 05:15:00. This is because the tape #1 is 30 seconds ahead of where it should be.
56 • If there is only one ADAT connected, Continuous mode will not be selectable from the previous page (Offset mode). • If there are two ADATs connected, then X will be 2, and YY will not be displayed. This indicates that only the second unit will be offset.
57 beginning of each tape, this will cause the second set of ADATs to be at 00:00 by the time the first set of ADATs reach 30:00. The second set of ADATs will begin recording at 00:00, and the first set of ADATs will continue recording until they run out of tape, at which point they will stop; 6.
58 the same song on one set of tapes, you could set up the parameters for the first recording (song start, SMPTE start offset, locate points, etc.) and then simply copy the information to as many song locations as you need, using the COPY SONG button (see section 4.
59 Note: Although the BARS Display Type is available for viewing (see section 1.4C), this cannot be edited in the Set Song display. This is because the song’s starting position is referenced only to the Normal tape position, and is always bar 1. When the Display type is set to SMPTE, the song start will default to 00:00:00:00.
60 1. If the LCD display is not currently displaying the Set Song page, press the SET SONG button; 2. Press the NAME button to move the cursor to the first character in the song’s name; 3. Use the Cursor buttons to position the cursor beneath the character you wish to edit; 4.
61 2. Press the LOCATE SONG button again to rewind or fast forward to the currently displayed song start address. The REW or FFW LED will flash depending on the direction of the search. Note: If the LOCATE SONG function is initiated while in record, recording will be stopped (punched out) before performing the locate.
62 • When a song is copied, you are taken to the new song location that you copied to. So, if you selected song 1 and copied it to song 2, you would now be in song 2.
63 Like all other locate changes, the song setup information is not actually deleted from the tape until you save the setup to tape, assuming you have already saved the setup at some point before deleting the song (see section 5.2). If you accidentally deleted a song, you could retrieve it by loading the setup data back from tape.
64 5. Press the DIGITAL I/O button to enable the digital bus (the DIGITAL I/O button LED will go on to indicate it is enabled). 4.7B Bouncing tracks The BRC makes it possible to copy tracks between ADATs without leaving the digital domain. The BRC assumes you have connected the digital bus correctly between all ADATs in the system (see section 2.
65 • To select a single source track, press the desired TRACK SELECT button. The track will now be enabled and its green Input LED will be lit. Pressing the same button again will disable that track and turn off the LED. You may now select a different track.
66 tracks. • A digital source track cannot be selected as a digital destination track (i.e. digital source tracks will not be allowed to be record enabled when DIGITAL I/O is enabled). • When copying digital tracks, any track delays and machine offsets will be in effect.
67 4. Press the DIGITAL I/O button again while the digital input display reads “AES/EBU” or “S/PDIF”; The display will show the following: Select tracks to output to AI-1 All the record and input track LEDs no longer reflect the record/monitor status.
68 input. 6. Press the DIGITAL I/O button again; The display will show the following: AI-1 Clock: 4 8K 7. Use the UP/DOWN buttons to select the AI-1’s clock source (48K or 44.
69 CHAPTER 5: SYNCHRONIZATION, BACKUP AND MISC CONTROLS 5.0 SMPTE 5.0A SMPTE Formats The SMPTE button may be pressed repeatedly to cycle through the various types of SMPTE that can be generated and/or synchronized to, and used for locating when SMPTE Display Type is selected.
70 SMPTE Offset h h:mm:ss:ff …where hh:mm:ss:ff is the offset amount (range: 00:00:00:00 through 23:59:59:29). The default is 00:00:00:00. Depending upon the current SMPTE format (see section 5.0A), the frame count will vary (0 through 23 at 24 fps, 0 through 24 at 25 fps, 0 through 29 at 30 fps and 29.
71 format, to ensure an accurate sample-lock. The BRC can detect whether or not Drop-Frame is being used. If you select a different SMPTE format on the BRC than what it is receiving, the result will be a transposition of the sample rate.
72 6. Press the EDIT button to exit edit mode; 7. Press the EXT SYNC button to enable external synchronization. Note: The EXT SYNC button cannot be turned on until you have selected a synchronization source.
73 due to new SMPTE being stripped over a previously existing SMPTE stripe on the same tape. In this situation, you wouldn’t want the BRC to suddenly locate to the new time position, but you would want it to continue synchronizing to the SMPTE clock which remains constant.
74 The GEN SYNC button is used to enable/disable the output of sync information. Sync information may be sent as SMPTE, MTC (MIDI Time-Code) or MIDI-Clock (see section 5.1). Pressing the GEN SYNC button will enable the output of sync information and its LED will light.
75 Note: The GEN SYNC button cannot be turned on until you have selected a synchronization type to output. If the GEN SYNC button is pressed when both the SMPTE and MIDI options are set to Off, the following display will briefly appear: Must select output type 5.
76 To create a tempo map: 1. Press the TEMPO MAP button; The display will show: Bar X XXX bb/nn xxx.x bpm …where XXXX (range: 0001 through 9999) is the bar at which the following time signature and .
77 advance much faster due to the changes in tempo and time signature. Then, at about 00:35:00, the bars advance much slower. Figure 4 5.1B Displaying A Tempo Map To display existing tempo/time signature changes in the tempo map: 1. Press the TEMPO MAP button, to enter the Tempo Map display; 2.
78 5.1D Erasing A Tempo Map To erase a tempo map: 1. Press the TEMPO MAP button twice to access a second page. Repeatedly pressing the TEMPO MAP button toggles between the two pages; The display will look like this: Erase tempo map? (Press PLAY) 2. Press PLAY to erase the tempo map.
79 the original settings that had been previously made as well as the new changes. The BRC’s setup information may also be transmitted as MIDI system-exclusive data into some sort of MIDI data storage device, such as the Alesis DataDisk, or any MIDI sequencer.
80 display to look like this: Tape save Aborted 5.2B Load Setup From Tape The LOAD SETUP FROM TAPE button is used to load the TOC (table of contents) from tape into the BRC's internal memory. Information is loaded from the first ADAT in the system only.
81 5.3 MIDI/UTIL BUTTON The MIDI/UTIL button gives you access to basic MIDI and utility functions. Each time this button is pressed, the display will cycle through the 7 pages and their respective functions, described below.
82 in the same song number location that the data originated from. For example, if you send song #3 out as a system-exclusive dump, when you receive it back into the BRC it will be placed into song location 3. To initiate a system-exclusive data dump: 1.
83 5.3C Tape Status This page indicates the current tape status of any of the connected ADATs. Each slave will be in one of these conditions: • Formatted/Protected: The tape is formatted, but write-.
84 3: Tape x x Stat No tape present …or 3: Tape x x Stat Not responding …where XX is a tape machine number from 01 to 16. 2. Use the Numeric Keypad or the UP/DOWN buttons to select a tape machine number 01 through 16. Note: You will only be able to select tape numbers corresponding to the number of ADATs you have connected to the BRC.
85 This function allows you to either enable or disable the track group buttons from being able to store and recall groups of record-enabled tracks. This is useful when you don’t want to worry about accidentally pressing one of the group buttons and losing the current record- enabled tracks.
86 2. Use the UP/DOWN buttons to select either Manual or Normal mode. 5.3G Software Version If you cycle through all seven of the MIDI/UTIL button’s pages, you’ll come to the Software Version page. This will display the current software version the BRC is running under.
87 CHAPTER 6: APPENDICES 6.0 APPENDIX 1: SPECIFICATIONS Internal Memory Song Memory: 20 Locate Points (per song): 20 (with user-variable names) # of Preset Locate Names: 16 (user configurable) Song Co.
88 External Sync: SMPTE (all formats), Video (composite or black-burst), and 48 KHz word clock General Front Panel Controls and Indicators: Illuminating transport controls for Play, Stop, Fast Forward, Rewind, and Record. Numeric keypad (0-9, Up and Down).
89 Dimensions (H x W x D): 10-5/8" x 17" x 4" (261.5 mm x 432 mm x 101 mm) Weight: 12 lbs (5.44 kg) Shipping Weight: 18 lbs (8.2 kg) Accessories Included: IEC style AC power cord Owner.
90 6.1 APPENDIX 2: MAINTENANCE/SERVICE INFORMATION 6.1A Cleaning Disconnect the AC cord, then use a damp cloth to clean the BRC’s metal and plastic surfaces. 6.1B Maintenance Here are some tips for preventive maintenance. • Periodically check the AC cord for signs of fraying or damage.
91 6.2 APPENDIX 3: TROUBLE-SHOOTING Symptom Solution The LCD does not light when the Make sure the power cable is plugged POWER switch is turned on. in properly; also check that the LCD contrast adjustment is correctly set. The BRC Tape Position Counter Indicates that an ADAT’s error reads “Er on 1” – “Er on 16”.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Alesis BRC c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Alesis BRC - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Alesis BRC, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Alesis BRC va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Alesis BRC, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Alesis BRC.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Alesis BRC. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Alesis BRC ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
