Data Control Module

Tape Control Module

Modular Design

The Data Control Module (DCM) contains several of the functions and features of LGMR technology, which is at the heart of the SDLT technology. Of the five technologies that constitute the LGMR technology, two are in the DCM. These are the POS and the MRC heads.

The main functions of the DCM are to provide the path and guides for all tape motion inside the tape drive and to write data to and read data from the tape. In addition to the POS and MRC heads described in Pivoting Optical Servo and Magneto Resistive Cluster Heads, the DCM contains a number of components that interact to perform these functions. These components include:

Advanced head guide assembly

Take-up reel

Drive motor

Optical servo system

Tape heads.

In addition to its mechanical components, the DCM also contains printed circuit boards that control the functions of the DCM and the tape heads.

The Tape Control Module (TCM) implements the functions required to buckle and unbuckle the tape and control the tape motion. The TCM consists of a variety of components:

TCM Printed Circuit Board Assembly (PCBA)

Base Plate

Data Cartridge Receiver

Positive Engagement Tape Leader Buckling Mechanism

Tape supply motor assembly

Floor plate assembly.

TCM PCBA

The TCM has its own PCBA that controls the functions of the TCM and interfaces with the main controller board in the EIM. By designing the TCM as a distinct module, it allows manufacturing and testing the TCM

Quantum A-Series Tape Drives User’s Guide

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Quantum Audio A-Series manual Data Control Module Tape Control Module, TCM Pcba

A-Series specifications

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