IM CA71-E
1-1
Functions
1
1. Functions
■
Block Diagram
Constant
current
source
RJ
detection
circuit
T
e
mper
ature
sensor
Ref
erence
v
oltage
V
V
mA
mA
mA
3Wire
3W
FUSE
mA
Ω
Ω
Setting
P
o
w
er
supply
circuit
A
C
100V
DC/DC
con
v
e
rter
Measurement mode
on/off s
w
itch
P
o
w
er-on/off s
w
itch
Output on/off rela
y
Batter
ies
A
C
adapter
MEASURE Mode
Section
SOURCE Mode
Section
MEASURE
H
L
H
L
CPU
Shunt resistor
Multiplying
D/A
con
v
e
rter
A/D
con
v
e
rter
T
e
mper
ature
sensor
Ov
ercurrent
detection
Pulse
source
Comm
unication
cab
le
SOURCE
Memor
y
Displa
y
DIP s
w
itch
RJ INPUT
Ω
A/D
con
v
e
rter
Input
selector &
v
oltage
divider
Current-to-v
oltage
con
v
ersion
