Description
Studer A810 1/4″ 2 Track Analog Recorder
This A810 is 1/4″ half track stereo with four selectable tape speeds: 3-3/4, 7-1/2, 15, and 30 ips.
STUDER A810: Tape Transport Technology
- Servo-controlled tape transport
- Servo-controlled capstan motor for 2- and 4-speed versions.
- Tape speeds selectable directly on the front panel.
- Capstan controlled by microprocessor quartz reference and capacitive sensing tacho system.
- Spooling motor control with pulse-width modulation (PWM).
- Rigid precision headblock. Ceramic tape guides. The complete headblock can be removed and reinstalled while maintaining fully reproducible azimuth and tape path alignments.
STUDER A810: Microcomputer System Control
- The microprocessor infrastructure encompasses all operator controls, tape transport control, and switching of the audio electronics.
- Real-time display for all 4 tape speeds. Immediate display of translated real time when switching over between speeds.
- Readout of transferlocator positions.
- Hexadecimal display for audio parameters for each tape speed and tape formulation.
- Automatic self test during power-up sequence, when changing functions, and when entering mode. Diagnostic messages in the event of malfunctions.
STUDER A810: Programmable Audio Parameters
- All audio parameters are programmable.
- Individual audio parameters are stores for all 4 tape speeds and for 2 types of tapes as well as for NAB and CCIR standards.
- Parameters are entered through digital push buttons. Trimmer potentiometers, normally used for this function have been eliminated.
- Digital storage of audio set up means that amp cards for record and reproduce functions can be replaced during maintenance without realignment, calibration tapes, etc.
- Unlimited off-line storage for audio parameters through a serial communications interface (option).
STUDER A810: Sophisticated Audio Electronics
- The electronics of the STUDER A810 are the culmination of many years of development and refinement.
- Special phase correction circuits in the record and reproduce amplifiers do not require any alignment.
- Excellent flat frequency response even at the critical high and low frequency range limits.
- Sync reproduction and SAFE / READY switch included.
- Drop-in / drop-out tape travel compensation.
- Meters switchable for either VU or PPM indication.
STUDER A810: Time Code and Stereo Recording on 1/4″ Tape (option)
- Time code recording with SMPTE code on “third” track.
- Cross-talk rejection between time code and audio better than 90 dB.
STUDER A810: Future-oriented Serial Interface (option)
- Comprehensive control and status communication for tape transport, audio set-up, timing and amplifier parameters.
Programmable Function Keys
The STUDER A810 is very easy to use because of the logically grouped controls. Large faced keys with acknowledgement LEDs convey a clear picture – even when the operator is working under stress. The user can reprogram the standard function of 3 center-row keys fo a variety of operations.
- LOC 1, transferlocator position 1
- LOC START, searches address of the last PLAY (REC) command
- LIFTER DEFEAT, momentary or continuous disabling of tape lift, programmable
- TAPE DUMP, dump edit mode
These keys can also be used for programming 4 search-to-cue locate functions (LOC 1 through LOC 4). Any of the following optional functions can also be implemented:
- FADER START, activates fader start (local command kes are disabled). Built-in monitor speaker is automatically muted when fader is open.
- REM CONTROL, activates parallel remote control (local command keys are disabled).
- CODE READY, enables recording on time code channel.
Code switches are available for programming these command keys in any combination. The labels on the soft keys are user exchangeable so that keys correspond to the assigned function.
The multifunction TRANSFER key also simplifies operation: it is used to read in the locator positions; or, in conjunction with the spooling keys, to select one of the 3 microprocessor-controlled spooling speeds.
Central Control for Tape Speeds, Equalizations, Tape Types, and Mono/Stereo Mode Switching
4-Speed version
Four tape speeds (30-15-7.5 and 3.75 ips) selectable with rotary switch; capstan lock indicated by LED. Momentary push buttons and LEDs for selecting: equalization NAB/CCIR, tape type A/B, and STEREO/MONO mode on correspondingly equipped models.