1. Вовед
The Alesis ADAT-HD24 is a 24-track, 24-bit/96kHz hard disk recorder designed for seamless integration into any standard ADAT recording environment. This unit provides robust performance for music recording, utilizing standard, low-cost IDE computer drives for media. It features dual hot-swappable media bays, internal editing capabilities, and comprehensive connectivity options.
The ADAT-HD24 is engineered to deliver remarkable stability and performance, making it a reliable choice for professional audio production. Its user-friendly interface aligns with the expectations of ADAT users, ensuring efficient operation within existing studio setups.
2. Поставување
2.1 Отпакување и проверка
Carefully remove the ADAT-HD24 from its packaging. Inspect the unit for any signs of damage that may have occurred during transit. Retain all packaging materials for future transport or storage.
2.2 Инсталација на хард диск
The ADAT-HD24 utilizes standard IDE computer drives housed in hot-swappable caddies. The unit includes two media bays. To install a hard drive:
- Проверете дали уредот е исклучен.
- Insert a hard drive, pre-mounted in an Alesis caddy, into one of the two front-panel media bays.
- Gently push the caddy until it clicks securely into place.
- The caddies support IDE/EIDE/ATA drives ranging from 5,400 to 10,000 RPM, up to 2 TB in size.
2.3 Поврзување на единицата
Refer to the rear panel diagram for connection points. Ensure all connections are secure before powering on the unit.
Слика 2.1: Rear panel of the Alesis ADAT-HD24, illustrating the various input and output connections.
- Моќност: Connect the included power cable to the AC inlet (90-230V AC, 60W).
- Аналогно аудио: Use 1/4-inch TRS cables for the 24 analog inputs and 24 analog outputs (+4dBu nominal level).
- Дигитално аудио: Connect ADAT Optical cables to the three ADAT Optical input ports and three ADAT Optical output ports for 24-channel digital I/O.
- Синхронизација: Connect ADAT Sync devices to the DB-9 ADAT Sync In/Out ports. For external clocking, connect a 75Ω BNC cable to the Word Clock input.
- MIDI: Connect MIDI devices to the MIDI In/Out ports.
- Етернет: Connect an RJ-45 Ethernet cable to the 10 Base-T Ethernet port for computer connectivity.
- Footswitch/Remote: Connect a 1/4-inch footswitch for punch-in/out or an LRC remote for traditional wired control.
3. Operating the ADAT-HD24
3.1 Основно снимање
The ADAT-HD24 supports 24-track, 24-bit digital audio recording at 44.1 kHz or 48 kHz sample rates. With the optional EC2 upgrade, it can record 12 tracks at 88.2 kHz or 96 kHz.
Слика 3.1: Front panel of the Alesis ADAT-HD24, showing the display, transport controls, and media bays.
- Вклучување: Press the power button. The unit will initialize and display the main recording screen.
- Вооружување на шината: Select the desired tracks for recording using the front panel controls.
- Прилагодување на влезното ниво: Monitor input levels to prevent clipping.
- Снимање: Press the Record button, then the Play button to begin recording.
- Репродукција: Use the transport controls (Play, Stop, Rewind, Fast Forward) for navigation. The ADAT/FST (File Streaming Technology) provides instant random access to audio.
3.2 Internal Editing
The ADAT-HD24 offers basic internal editing capabilities:
- Исечете: Remove a selected audio segment.
- Копирај: Duplicate a selected audio segment.
- Залепи: Insert a copied segment at a specified location.
- Track Move: Relocate audio data between tracks.
- An undo function is available for editing operations.
3.3 Synchronization and Networking
- Синхронизација со повеќе единици: Multiple ADAT-HD24 units can be synchronized to expand track count for larger recording systems.
- ADAT System Integration: The unit is designed for efficient integration with existing ADAT systems using ADAT Optical and ADAT Sync.
- Компјутерска врска: The built-in Ethernet port allows for easy transfer of audio files to a computer-based Digital Audio Workstation (DAW).
- MIDI Time Code (MTC): The MIDI Out port can transmit MTC for synchronization with other MIDI-compatible devices.
4. Одржување
4.1 Управување со хард диск
Regularly back up your recorded data. The hot-swappable media bays facilitate quick drive changes for backup or expanding storage capacity. Ensure hard drives are properly formatted for use with the ADAT-HD24.
4.2 Чистење
Keep the unit clean by wiping its exterior with a soft, dry cloth. Avoid using liquid cleaners or solvents, which can damage the finish or internal components. Ensure ventilation grilles are free from dust accumulation to maintain proper airflow.
5 Смена на проблеми
If you encounter issues with your ADAT-HD24, consider the following general troubleshooting steps:
- Без моќност: Verify the power cable is securely connected to both the unit and a working power outlet. Check the power switch position.
- Нема аудио влез/излез: Confirm all audio cables (analog and digital) are correctly connected and not damaged. Check input source levels and output monitoring paths.
- Хард дискот не е препознаен: Ensure the hard drive caddy is fully inserted and the drive is properly seated within the caddy. Verify the drive is compatible and correctly formatted.
- Проблеми со синхронизацијата: Check all sync connections (ADAT Sync, Word Clock) and ensure all devices are set to the correct master/slave configuration and sample стапка.
- Контроли што не реагираат: Power cycle the unit by turning it off, waiting a few seconds, and then turning it back on.
For persistent issues, consult the Alesis support webстраницата или контактирајте ја нивната служба за корисници за дополнителна помош.
6. Спецификации
| Медиуми | Dual hot-swappable bays for standard IDE/EIDE/ATA drives (5,400/7,200/10,000 RPM, up to 2 TB) |
| Track Count | 24 tracks at 24-bit, 44.1 or 48 kHz 12 tracks at 88.2 or 96 kHz (with optional EC2 upgrade) |
| Аналогни врски | 24 x 1/4-inch TRS Inputs (+4dBu) 24 x 1/4-inch TRS Outputs (+4dBu) |
| Дигитални врски | 3 x ADAT Optical Inputs (24-channel) 3 x ADAT Optical Outputs (24-channel) |
| Други врски | MIDI Влез/Излез Alesis Sync In/Out (DB-9) Word Clock Input (BNC, 75Ω) Footswitch Jack (1/4-inch) LRC Input (1/4-inch) 10 Base-T Ethernet (RJ-45) |
| Аудио спецификации | Фреквентен одговор: 20Hz-20kHz +0/-1dB Динамички опсег: 103dB A/D, >103dB D/A (A-weighted) Дисторзија (THD+N): <0.003% Нивоа на внесување: Nominal +4dBu, Maximum +19dBu Контрола на теренот: +100 cents/-200 cents, min-max 30-50kHz (30-100kHz with version 2.0) |
| Барања за моќност | 90-230V AC, 60W |
| Димензии (В x Ш x Д) | 5.09 x 19 x 17 inches (3U rackmount) |
| Тежина | 20 фунти |
7. Гаранција и поддршка
Specific warranty terms and support contact information are not provided within this manual. Please refer to the Alesis official website or your product's original documentation for detailed warranty information and customer support resources.
