Positioning The Modules; Mechanical Installation; Identifying The Parts Of The Ptm - Compaq SW TL881 DLT Mini-Lib/1 Reference Manual

Positioning the Modules

The Expansion Unit must be mounted at the top of the stack, which places its
control panel at a convenient height. The control panels of the Data Unit
MiniLibrary Base Modules are of secondary importance, as they serve mainly
to help localize system failures. When installed, the motor drive assembly of
the PTM is directly behind the Expansion Unit.
Data units and MiniLibrary Base Modules can be installed anywhere below
the Expansion Unit, in any order. There might be a slight performance
advantage in making the MiniLibrary Base Modules contiguous, but gaps are
permitted. The size of a gap is limited by the fact that some number of 7 in
(18 cm) must bridge each gap of PTM track sections. For safety, available
cover plates should be installed on all PTM sections that are not connected to
MiniLibrary System modules.
The Expansion Unit senses the position of each module during initialization at
power-up. Even if there are gaps between modules, the system will operate
correctly. If you plan to leave gaps between modules, be sure to order
additional PTM track segments and cover plates equal to the length of the gap.

Mechanical Installation

Assembly of the PTM requires experience working with moderately complex
mechanisms, and the ability to follow directions carefully.

Identifying the Parts of the PTM

Locate and identify the PTM internal and external parts. The PTM is made up
of the following external parts, shown in Figure 3-1 (see Table 3-1).
Installation 3-3