Tektronix 071-1844-00 User Manual

DPO4000 Series Service Manual

2- 1

Theory of Operation

This chapter describes the electrical operation of the oscilloscope to the module
level. Figure 2--1 shows the oscilloscope module interconnections.

Block Diagrams

Power
supply

Main board

Front panel

Input ports for
application
modules

Attenuator circuit

Display

back light

inverter

power

LCD

Display

Ch 1

Ch 2

Ch 3

EXT

Ch 4

2-channel oscilloscopes

3 Fans

AC Line

4-channel oscilloscopes

EXT

Ethernet

connector

I/O Board

Compact

Flash Port

Aux Out

J100

J610

J570
J571
J850

J930

J680

J440

Bezel

buttons

J130

J420, J421

J170

J0480

USB

J120

J510

Figure 2- 1: DPO4000 series block diagram