Fluke 2680A User Manual page 226

2680A/2686A
Users Manual
Block Diagrams
Removable 20
channel input
port with built in
temp sensor
A/D #2
External Trig in
External Trig out
TCP/IP
Network
RS232
(cal/test)
A-30
A/D Input Card (one of six)
Switch Matrices
(FET or Relay)
A/D #3
A/D #4
A/D #5
DIO or A/D #6
Controller
RAM
FLASH
Real Time clock
Ethernet
RS232
PCMCIA Type II
Memory Slot
ATA Card
Figure A-1. 2680 Series Chassis
Power
Isolated
Filter
Power
and
A/D
Power
circuits
Daughter
Card
Ctrl Data
Data
Microprocessor
Ctrl
Display/
Keypad
A/C and Battery
Supply Circuits
Line Voltage or
Battery Voltage
M
o
Opto-
t
isolators
h
e
r
b
o
a
r
d
/
C
o
n
t
r
o
l
l
e
r
DC
Power
Bus
alg50f.eps