- Adat Xt Service Manual Pdf
- Alesis Adat Xt Service Manual
- Adat Xt Service Manual Transmission
- Adat Xt Service Manual Transfer Switch
- Adat Xt Service Manual User
Manufacturer Alesis Fairlight Genex iZ Technology Mitsubishi Otari Panasonic Sony Tascam Product ADAT 'Black Face' 8 Track Digital Recorder M Bit XT AI2 A/V Syncronization Interface BRC Remote/Locator LRC DaD 24 Audio Dubber MFX3+ Channel Rcording System GX8000 Magnetooptical Disk Radar 24Bit/192k Hard X80 2 Tape Machine X86 HS 96k X880 32 II. Why we provide Alesis Recording Equipment ADAT-XT Recording Equipment manual in PDF file format? PDF’s are incredibly convenient and are easy to open and read by everyone, regardless of whether they have a PC or Mac. A PDF can be compressed into a file size that is easy to email while still maintaining the quality of the images. Thank you for purchasing the Alesis ADAT-XT Digital Multitrack Tape Recorder. To take full advantage of the XT’s functions, and to enjoy long and trouble-free use, please read this user’s manual carefully. HOW TO USE THIS MANUAL This manual is divided into the following sections describing the various modes of the XT. Several versions of the ADAT machine were produced. The original ADAT (also known as Blackface) and the ADAT XT recorded 16 bits per sample (ADAT Type I). A later generation of machines—the XT-20, LX-20 and M-20—supports 20 bits per sample (ADAT Type II). All ADAT machines use the same high-quality S-VHS tape media.
We are the only official ADAT repair center and have some of the only remaining original parts for ADATs in the world. If you want your ADAT restored don't hesitate to give us a call.
We think educating customers is key, so we have written a tutorial below for how to clean your ADAT transport and tape head.
Manual Cleaning Procedure Cleaning Materials For the tape path: | ||||
| Lint-free cotton buds. | ||||
| DO NOT USE THIS COTTON BUD TO CLEAN THE ROTARY HEAD SYSTEM. | ||||
| 99.9% pure Isopropyl Alcohol - available from your local pharmacy. | ||||
| For the rotary head system: | ||||
Lint-free cloth. 99.9% pure Isopropyl Alcohol. or CQ video head cleaning sachet. | ||||
| The sachet contains a lint-free pad already dampened with the correct cleaning solutions. | ||||
WARNING! Before proceeding, Remove The Mains Power And Other Connections To The Machine. Tape Path Description. The tape is taken from the left supply hub and travels past a stationary guide, the tension arm, P1 fixed guide, impedance roller and then P2 inclined and roller guide. From there it enters the rotating head system. On exiting from the rotating heads the tape passes around P3 inclined and roller guide across the linear head and P4 fixed guide and from there through the capstan shaft/pinch roller and onto the take-up hub. | ||||
Note that the inclined and roller guides will be located at the front of the rotary head system in the unlaced or disengaged position. Cleaning The Tape Path. All parts that come into contact with the tape should be cleaned. Refer to the drawing as an aid to identification. Adopt a logical approach following the path of the tape from the left of the transport towards the right. This will ensure nothing is missed. Use a cotton swab dipped in alcohol and adopting a sideways (horizontal), rather than an up and downward motion, clean the following components:
Make sure the white roller guide sleeves are cleaned thoroughly by rotating them. To aid identification: • Guides incorporate a channel in which the tape runs. • Posts have a constant diameter with no channel. The linear head, which resembles a conventional analog head, can be cleaned with a swab, again using side to side strokes. The capstan shaft can be cleaned with alcohol. Do not clean the pinch roller as the alcohol will cause the rubber to become hard and crack over a period of time. Unless you have specialist rubber cleaner, leave the pinch roller cleaning until its next service. Make sure any excess moisture is removed after cleaning. | ||||
Rotary Head Description. There are two main parts to this, the lower drum, which is stationary and secured to the chassis and the rotating upper drum or 'scanner' which houses the two read and two write heads. The scanner rotates in a counter-clockwise direction at high speed. The heads themselves are located at the bottom of the scanner in recesses. Their alignment is critical and should not be disturbed under any circumstances. If the condition of the head has deteriorated to the point where an ERR 7 is displayed, the use of a cleaning tape may well not be enough to clear the problem. | ||||
| ||||
IF YOU HAVE ANY DOUBTS DO NOT PROCEED. CAUTIONS: WHEN CLEANING THE ROTARY HEADS. | ||||
• Do not use any material other than lint-free cloth (CQ sachet) for cleaning the rotary head. | ||||
To clean the heads open the CQ sachet, which already contains the necessary cloth and cleaning agents. Leaving the cloth folded, place it against the drum (the easiest place is on the right-hand side of the drum) and hold it gently in place with your index finger. While applying GENTLE pressure to the drum rotate the upper half or scanner ANTI-CLOCKWISE 20 times, using the round rotor board that is secured to its top. (We repeat, it is very important that you do not move the cloth or your finger while you are rotating the scanner as this can damage or affect the alignment of the heads.) This has the effect of swiping the heads through the material and the cleaners, which dissolve out the embedded oxide and debris, depositing them onto the cloth. The result is a dark smear on the material. Continue cleaning until no more residues appear on the cloth, do not let the cloth dry out. The helical groove around the top of the lower drum should also be cleaned. As this does not spin a cotton swab moistened with alcohol will suffice. As you clean this groove, rotate the upper drum a little to keep the heads away from the swab. Do not allow the cotton swab to come into contact with the heads. Wait for two or three minutes to allow the alcohol to evaporate before inserting a tape, failure to do this will result in a tape tangle. Test the recorder while the mechanism is still exposed to be sure that the tape plays satisfactorily and that none of the indicators described in the first section of these instructions is present. Having completed the head and tape path cleaning and tested that the recorder is operating correctly, replace and secure the top plate or cover of the ADAT, return the recorder to its normal position and reconnect the mains power, audio, and control cables. | ||||
Adat Xt Service Manual Pdf
Alesis Digital Audio Tape (ADAT) is a magnetic tape format used for the recording of eight digital audio tracks onto the same S-VHS tape used by consumer VCRs.
History[edit]
The product was announced in January 1991 at the NAMM convention in Anaheim, California by Alesis. The first ADAT recorders shipped over a year later in February or March 1992.[1] More audio tracks could be recorded by synchronizing up to 16 ADAT machines together, for a total of 128 tracks. While synchronization had been available in earlier machines, ADAT machines were the first to do so with sample-accurate timing - which in effect allowed a studio owner to purchase a 24-track tape machine eight tracks at a time. This capability and its comparatively low cost, originally introduced at $3995, were largely responsible for the rise of project studios in the 1990s.[2]
Several versions of the ADAT machine were produced. The original ADAT (also known as Blackface) and the ADAT XT recorded 16 bits per sample (ADAT Type I). A later generation of machines—the XT-20, LX-20 and M-20—supports 20 bits per sample (ADAT Type II). All ADAT machines use the same high-quality S-VHS tape media. Tapes recorded in the older Type I format can be read and written in the more modern machines, but not the other way around. Later generations record at two sample rates, 44.1 and 48 kHz, common in the audio industry. All models allow pitch control by varying the sample rate, and thus tape speed accordingly. An original Blackface could record at 44.1 kHz (or other desired sample rates) if the pitch was lowered or raised by a specific amount. An indicator on the LED display showed when 44.1KHz was reached.
With locate points it was possible to store sample-exact positions on tape, making it easy to find specific parts of digital recordings. Using auto play and auto record functions made it possible to punch in/out at predetermined points, rather than relying on human timing ability to start and stop recording at precisely the right instant.
ADAT machines could be controlled externally with the Alesis LRC (little remote control), which could be attached to the ADAT with a 1/4' tip/sleeve plug, and featured the transport controls and most commonly used functions. Alternatively, the BRC[3] (big remote control) could be used, which included many more features which the stand-alone ADAT did not have, such as song naming, more locate points and MIDI timecode synchronization.
Current status[edit]
ADAT tapes are still available through some pro-audio retailers with products from Maxell, EMTEC (formerly the tape division of BASF).
Although it is a tape-based format, the term ADAT now refers to its successor, the Alesis ADAT HD24, which features hard disk recording rather than the traditional tape-based ADAT, which in turn is now considered obsolete. Many still use the ADAT as a simple I/O (in/out) for transfer of analog to digital signals.
ADAT is also currently used as an abbreviation for the ADAT Lightpipe protocol, which transfers eight tracks in a single fiber optic cable. The ADAT cable standard is no longer strictly tied to ADAT tape machines and is now used by analog-to-digital converters, input cards for digital audio workstations, effects machines, etc. One of the original benefits of utilizing ADAT versus S/PDIF or AES3 was that a single cable could carry up to eight channels of audio. (AES10 (MADI) can now carry up to 64 channels.)
Alesis Adat Xt Service Manual
See also[edit]
Adat Xt Service Manual Transmission
References[edit]
- ^Peterson, George; Robair, Gino [ed.] (1999). Alesis ADAT: The Evolution of a Revolution. Mixbooks. p. 2. ISBN0-87288-686-7
- ^George Petersen, 'In Memoriam: Keith Barr 1949-2010', Mix Magazine Online, Aug 2010, http://mixonline.com/news/keith_barr_obit_2508/index1.htmlArchived 2010-08-29 at the Wayback Machine
- ^Alesis BRCArchived January 3, 2010, at the Wayback Machine
External links[edit]
Adat Xt Service Manual Transfer Switch
Media related to ADAT at Wikimedia Commons
Adat Xt Service Manual User