2-20
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Chapter 2
Analog Input and Temperature Sensor Measurements
Installing Bias Resistors
To install a single bias resistor on the negative line (AI–) of a differential pair, put the resistor in
position D on the SCB-68A, as shown in Figure 2-14. Leave the 0
Ω
resistors at positions F and
G in place for each channel used.
Figure 2-14.
AI Differential Configuration with Single Bias Resistor
To install balanced bias resistors, put resistors in positions B and D on the SCB-68A, as shown
in Figure 2-15. Leave the 0
Ω
resistors at positions F and G in place for each channel used.
AI
i
AI
i
+
8
y
S
C
x
E
A
F
G
B
C
D
+
+
+
–
+ 5 V
AI GND
+ 5 V
AI GND
AI
i
AI
i
+
8
