Tektronix TLA715 Series, Service Manual

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TLA715 Dual Monitor Portable Mainframe Service Manual
3- 1
Theory of Operation
This chapter provides a brief overview of the theory of operation for the TLA715
Portable Mainframe. Figure 3--1 shows a functional block diagram of the major
components.
TLA 700 Series module # 1
PCI to backplane
bridge ASIC
PC Controller
display and I/O
VTC Trig
ASIC
PC Cards, SVGA, COM1,
EPP & trigger/signal ports
Controller
Color LCD
display
Front panel
keypads & knobs
Trackball
pointing device
Front panel interface board
Hard disk
drive(s)
Floppy disk
drive
Backplane
Fans
Power supply
External mouse,
USB, and keyboard
TLA 700 Series module # 2
CD ROM
drive
Figure 3- 1: TLA715 Portable Mainframe block diagram
Block Level Description
The following paragraphs provide a high-level overview of the major compo-
nents of the TLA715 Portable Mainframe. Refer to Figure 3--1 while reading the
following paragraphs.
The controller board provides the portable mainframe with a high-performance
PC-based controller architecture, including graphics and I/O, and interfaces to
the backplane bus and the front panel. The controller board mounts vertically on
the left side of the instrument and connects to the back of the backplane. The
controller provides signals to the rear panel and front panel interface.
Controller Board