2-6
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Chapter 2
Using the Module
Block Diagrams
Figure 2-3 shows the PXIe-4480 analog input circuitry block diagram. Depending on the
connector type, connect the signals as described in the
section.
Figure 2-3.
PXIe-4480 Analog Input Block Diagram
Filter
S
elect
–
+
Ch
a
rge
Amplifier
Lowp
ass
Filter
Ch
a
rge
O
u
t
Ch
a
rge
In
Excit
a
tion Volt
a
ge
10 V / 25 V / Adj (9.5 V to 12 V)
EX<0..5> GND
EX<0..5>+
+
–
Volt
a
ge/
Ch
a
rge
Volt
a
ge/
Ch
a
rge
4mA/10mA/20mA
IEPE Con
s
t
a
nt
C
u
rrent
S
o
u
rce
IEPE
On/Off
Ch
a
rge
O
u
t
AI<0-5>+
AI<0-5>–
1.62 M
Ω
ADC
1.62 M
Ω
50
Ω
+
–
AC/DC
Co
u
pling
AC/DC
Co
u
pling
Progr
a
mm
ab
le
Differenti
a
l
Amplifier
Lowp
ass
Filter
P
s
e
u
dodifferenti
a
l
En
ab
le
Ch
a
rge
In
Volt
a
ge/
Ch
a
rge
Volt
a
ge/
Ch
a
rge
+
–
INPUT
