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TLA721 Benchtop & TLA7XM Expansion Mainframe Service Manual
3- 1
Theory of Operation
This chapter provides a high-level overview of the theory of operation for the
TLA721 Benchtop Mainframe and the TLA7XM Expansion Mainframe. The
two mainframes are identical with the following exceptions:
H
The TLA721 Benchtop Mainframe includes a plug-in controller that controls
the operation of the entire system.
H
The TLA7XM Expansion Mainframe includes an expansion module that
routes signals from another external mainframe to the expansion mainframe.
The external mainframe can be a TLA715 Portable Mainframe, a TLA721
Benchtop Mainframe, or another TLA7XM Expansion Mainframe. The
external mainframe also has an expansion module that routes the backplane
signals from the external mainframe through three cables to the expansion
module in the expansion mainframe.
The theory of operation is broken down according to the benchtop controller,
mainframe, and expansion controller. The
Diagrams
chapter contains block
diagrams and interconnection diagrams separate from this chapter that you may
want to use while servicing the instrument.
Benchtop Controller
Refer to Figure 3--1 while reading the following paragraphs on the benchtop
controller.
The benchtop controller provides all the benefits of a high-performance
PC-based controller architecture including graphics and I/O. The main difference
between the benchtop controller and a standard PC is the interface used to
communicate with the modules installed in the mainframe. The benchtop
controller is installed in a three-wide controller module that supports integration
with the mainframe.
The benchtop controller uses the same Pentium III controller found in the
TLA715 Portable Mainframe. However, the parts are rearranged to provide
access to the PC I/O connectors found on the front of the controller. An
additional adapter board interfaces the controller board to the backplane and
additional peripherals. A hard disk drive board mounts the hard disk drive and
CD-ROM drive.
Summary of Contents for TLA7XM
Page 5: ......
Page 13: ...Table of Contents viii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 17: ...Service Safety Summary xii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 21: ...Preface xvi TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 25: ...Introduction xx TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 43: ...Specifications 1 18 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 85: ......
Page 87: ...Adjustment Procedures 5 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 161: ...Repackaging Instructions 6 74 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 165: ...Electrical Parts List 8 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 169: ...Diagrams 9 4 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 189: ...Mechanical Parts List 10 20 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...