Tandberg Data SDLT 600 - Manual (Page 24)

Modular Design SDLT 600 Product Manual
2-6 March 2004 81-81184-02 REV A01
2.4.1 Data Control Module
The Data Control Module (DCM) contains several of the functions and features of the 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
Section 2.3.2, “Pivoting Optical Servo” on page 2-3 and Section 2.3.3, “Magneto Resistive Cluster
Heads” on page 2-4 , 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.
2.4.2 Tape Control Module
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 as a stand-alone module, simplifying the design, manufacturing, and troubleshooting
processes.