Tektronix TDS 420A - Page 270

Diagrams
9-8
TDS 420A, TDS 430A & TDS 460A Service Manual
A05 ATTENUATOR
A08
JUMPER
CH 1
CH 2
CH 3
CH 4
A04 ACQUISITION
LINE
FILTER
A07
PFC MODULE
A25
ATTENUATORS
PREAMPS
ACQUISITION
SYSTEM
A01 BACKPLANE
FAN
FUSE
LOW VOLTAGE
POWER SUPPLY
A09
DSP
BATTERY
50
22
10
2
2
FL52
1
PROBE ADJ
GND
10
MENU SWITCHES
A17 BEZEL BUTTON
14
PROBE CODING
INTERFACE
A15
5
A06 FRONT PANEL
10
34 34
20
2
98
50
FRONT PANEL
SWITCHES
FRONT PANEL
POTS
FRONT PANEL
LEDS
PROBE
COMPENSATION
2
3
1
1
(TDS 420A &
TDS 460A ONLY)
(TDS 420A &
TDS 460A ONLY)
2
10
2
8
Figure 9- 6: TDS 400A Block Diagram, B080000 & up