Справочник Пользователя для Tascam 122MKIII

122mkIII Technical Documentation

                                       7733 Telegraph Road   •   Montebello, CA 90640   •   (323) 726-0303   •   http://www.tascam.com
All features and specifications are subject to change without notice.  Contact your local TASCAM representative for the latest information.

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122mkIII_TECHDOC.pdf

032500

The 122mkIII has long been revered as the 

standard for cassette mastering, with few 

changes made to the original product design.  
The original 122 cassette deck was introduced 

in 1980.  The 122 was TASCAM's first 

professional, rack mounted, 3 head cassette 

deck with 2 speeds (1 7/8 and 3 3/4). A year 

after the product was first introduced, NBC 

standardized their entire operation using the 

TASCAM 122.  The reason NBC made the 

change was because the 122 had all the 

capabilities for adjustments, and spectacular 

performance characteristics.  Aided by NBC's 

practical endorsement of the TASCAM 122, 

ABC and CBS followed, and before long the 

122 became the industry standard. 
In 1987 the 122MKII continued TASCAM's 

leadership in the professional cassette market. 

The new features included Dolby HX PRO, the 

ability to find locate points, a zero return 

function, and pitch control.
The 122mkIII was introduced in 1993 

incorporating a new and improved transport 

assembly utilizing the Hysteresis Tension

Servo Control System, further improving the

reliability and stability of the legendary 122 

heritage.

Not all cassette decks are created equal.  While most cassette decks offer

Dolby Noise Reduction of some sort, here are some features you won't 

find on most run-of-the-mill cassette decks:
Balanced, Unbalanced, and Front Panel Line Connectors - Integrate

into any studio, anytime.  The rear panel I/O accepts both balanced and

unbalanced signals, and a front panel Line In provides simple patching of

ancillary gear for reference copies, submixes, or spontaneous dubs.
2 Locate Points and Return To Zero - Locate points can be used for

comparing multiple mixes in quick sequential order, or for marking cues.

Return To Zero is always handy when recording multiple passes.
Dolby HX Pro - HX Pro algorithms help maintain true printing of high

frequency content.  HX Pro recordings do not require any decoding on 

playback, so the user can freely apply this system to their recordings.
MPX Filter - When recording from FM broadcast, Dolby Noise Reduction 

can sometimes be compromised by information around the pilot tone at

19kHz, or the sub carrier note at 38kHz.  The MPX Filter removes these

troublesome frequencies.
Oscillators, Front Panel Bias & Recording Level Controls - Each 

brand of tape responds to recordings differently.  Adjusting the bias 

controls on the recorder can help compensate for this.  The 122mkIII's 

three head design allows for real time monitoring of the test tones as 

they are adjusted.  For additional convenience, the test tone oscillators

are built right in, so there's no extra test equipment to track down.  

Front panel bias and recording level controls make biasing the 122mkIII

effortless.  Proper bias settings will result in more reliable sonic 

characteristics in most situations.

The cassette player/recorder shall utilize a three head 

cassette mechanism, using separate heads for erase, 

record, and reproduce.  The transport shall be a direct

drive mechanism and employ the Hysteresis Tension 

Servo Control System for increased stability.
Inputs and outputs shall be provided on unbalanced RCA 

and balanced XLR plugs on the rear panel.  An additional 

pair of 1/4" inputs shall be located on the front panel.  

Levels shall be displayed on large VU meters with peak 

LEDs for accurate display of levels.  The input level shall 

be controlled by large gear/clutched controls on the front 

panel.  Stereo output level shall also be provided on the 

front panel for convenience.  Headphone output with 

level control shall be provided on the front panel.
Monitor selection switch shall be provided on the front 

panel for selection between input monitor mode and 

automatic monitor mode.  Dolby™ B and C noise reduction 

shall be implemented and switched from the front panel.  

An MPX filter shall be switchable from the front panel.
A pitch control will provide approximately ±12% range 

of pitch control, with a dedicated on/off control. 

Individual bias and level fine tune controls shall be 

accessible on the front panel, as well as 400Hz and 10kHz 

oscillators for convenient biasing of the machine.
The cassette deck shall have dedicated buttons to access 

the RTZ function (Return to Zero) and two locate points.  

An additional separate button shall trigger the repeat 

function which will loop between locate 1 and locate 2.  
A digital counter shall be used to display precise tape 

location with a readout displaying minutes and seconds.
A parallel control shall be provided which can be used for

remote control and tallies, and it shall be compatible with

the TASCAM RC-134 remote control.
The cassette deck shall mount in a standard 19" rack mount

form, taking three rack spaces.  The cassette mechanism

shall have dimensions of 19" x 5 1/4" x 14" (W x H x D).