DPO4000 Series Service Manual 2-1

Theory of Operation

This chapter describesthe electrical operation of the oscilloscope to the module

level. Figure 2--1shows the oscilloscope module interconnections.

Block Diagrams

Power
supply
Mainboard
Frontpanel
Inputports for
application
modules
Attenuatorcircuit
Display
backlight
inverter
power
LCD
Display
Ch1
Ch1
Ch2
Ch2 Ch3
EXT
Ch4
2-channeloscilloscopes
3Fans
ACLine
4-channeloscilloscopesEXT
Ethernet
connector
I/OBoard
Compact
FlashPort
AuxOut
J100
J610
J570
J571
J850
J930
J680
J440
Bezel
buttons
J130
J420,J421
J170
J0480 J1
USB
J120
J510

Figure2 -1: DPO4000 series block diagram