With its compact and rugged design, its system flexibility, and the high operating convenience afforded by its multiple microprocessors, the STUDER A812 MKII tape recorder satisfies all requirements of a universal studio machine, be it in radio, television, or recording studios, theater or film productions, auditoriums, or scientific institutes.
Its salient features are:
■ Highly stable die-cast aluminum alloy chassis for the tape deck, the head-block, and other assemblies.
■ Hall-commutated brushless DC capstan motor with capacitative tacho sensor for highly accurate tape speed.
■ Fast tape deck with high spooling speeds and gentle tape handling throughelectronically controlled tape tension, 2 controlled AC spooling motors, and noncontacting tape tension sensor.
■ Precision electronic tape counter with real-time indication. Photoelectric scanning of the guide roller rotation.
■ Easy editing; motor-assisted hand cueing with variable spooling speed
(SHUTTLE mode). For cueing in spooling mode, the high end of the frequency response can be lowered (switch selectable).
■ Monitor speaker below the tape deck cover or in the meter penthouse.
■ Manually operable shield above the reproduce heads; can remain closed in spooling mode.
■ Dolby-HX-PRO: standard
Due to the enormous system flexibility, a suitable A812 MKII version is availble for any type of application:
■ The basic version is available as a mono, 2-channel (optionally with timecode center track) or stereo machine with or without external instrument panel.
■ Can be operated in horizontal, inclined, or vertical position.
■ Four tape speeds can be selected: 3.75 / 7.5 / 15 / 30 ips (programmable).
■ The inputs and outputs are balanced and floating and can be ordered with or without input/output transformers.
■ Selector switch for two tape types with different calibration data, and changeover switch for NAB/CCIR equalization.
■ Zero locator and transfer locator for up to 5 addresses as standard features.
■ Equipped with varispeed control (variable tape speed).
■ Output selector keys on models equipped with VU meters:
INPUT, REPRO and SYNC (playback via record head).
■ VU-meter panel with safe/ready changeover, record level potentiometers.
■ Line voltage selectable from 100 to 140 V / 200 to 240 VAC, ± 10%, 50...60 Hz.
■ Can be remote controlled from a terminal or personal computer via an RS232 interface (option).
■ Connection facilities for fader start circuit, parallel and serial remote control.
High operating convenience afforded by a control system comprising several microprocessors:
■ Tine last operating state is saved when tlie machine is switched off: tape counter, locator addresses, tape speed, settings of the input and output selectors. STOP mode is automatically activated when the machine is powered on again.
■ Drop in by pressing only the REC key in play mode (internally programmable)
■ Drop out by pressing PLAY during a recording.
■ Reduced spooling speed (LIBRARY WIND); A lower spooling speed can be selected for producing pancakes to be saved in the library.
■ TAPE DUMP (waste basket mode with disabled take-up motor).
■ Alignment of the audio parameters via the microprocessor.
■ Programmable keys (softkeys): any function selected from a list of about 100 functions can be assigned to any key, for example:
■ FADER: Four operating modes can be selected, for example: local keyboard blocked, only fader start possible, etc.
■ REHEARSE: Simulates an electronic cut.
■ AUTO MUTE: Automatically mutes the audio channels in spooling mode.
■ SPOT ERASE: Activates the erase circuit without tape transport, the tape can be moved manually.
■ SKIMMING: Eliminates pre-echoes from tapes that have been kept in the library for a long time.
■ Internal location test system for the main functions, with error diagnosis.
■ Automatic power-on self test, is partially repeated at periodic inten/als.
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