Studer A812 Tape Machine

Message Board - Studer A812 Tape Machine - General Discussion
Studer A812 MKI Operating and Service Manual
Studer A812 MKII Operating Manual
Studer A812 MKII Service Manual

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.

Studer A812 Tape Machine

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