National Instruments SCXI Series - Figure 4-8. SCXI-1520 to SCXI-1314 Quarter-Bridge Connection

Chapter 4 Connecting and Using Accessories and Transducers
Getting Started with SCXI 4-16 www.ni.com
Figure 4-8. SCXI-1520 to SCXI-1314 Quarter-Bridge Connection
Quarter-Bridge Configuration I
Quarter-Bridge
Completion Resistor
+
–
Voltage Excitation and
Half-Bridge Completion
Network Enabled
R
1
R
2
R
L
R
L
R
3
V
EX
+
–
S+
P+
QTR
Quarter-Bridge Configuration II
+
–
Voltage Excitation and
Half-Bridge Completion
Network Enabled
R
1
R
2
R
g
(dummy)
R
L
R
L
R
L
V
EX
+
–
S+
P+
P–
•
1+
–4V
r
GF (1 + 2V
r
)
R
L
R
g
•
1+
–4V
r
GF (1 + 2V
r
)
R
L
R
g