TLA5000 Series Service Manual
3-1
Theory of Operation
This chapter provides a high-level overview of the board level theory of
operation for the logic analyzer. Refer to the Diagrams chapter for a functional
block diagram of the instrument.
Hardware
The logic analyzer controller contains a PC motherboard and microprocessor
system that controls the entire instrument. The instrument features a flat-panel
display, front panel keyboard with control knobs, probe interface, and external
connections for a keyboard, mouse, and other PC accessories.
The Intel Micro ATX mother board provides all the benefits of a high-perfor-
mance PC-based mother board. The mother board contains the microcontroller,
memory, battery, and input-output components typically used with a PC.
The following peripheral interfaces are included:
H One parallel port
H Four USB 2.0 ports (two external, two internal)
H Two serial ports (one internal, one external)
H Two IDE interfaces supporting up to ATA-100
H Floppy disk drive interface
H PS/2 keyboard and mouse ports
H 10/100 Mbit/s LAN port
H Secondary display connector
The Interface board connects the mother board to the rest of the instrument
through the PCI connector. The interface board contains the following circuitry:
H LPU Circuitry. The LPU circuitry controls the acquisition system using a
68360 microprocessor.
H Internal Display. The interface board contains the display controller that
drives the 1024 X 768 resolution as well as an external display connector.
The display signal at the external primary connector is identical to the
General
Mother Board
Interface Board
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