National Instruments SCXI Series - Page 123

Chapter 4 Connecting and Using Accessories and Transducers
© National Instruments Corporation 4-27 Getting Started with SCXI
Figure 4-14. The second approach is to use the four-wire scan mode and
connect them as shown in Figure 4-15.
Figure 4-14.
Series Connection with Current Excitation
Figure 4-15. Four-Wire Scan Connection with Multiplexed Current Excitation
CH+0
CH
– 0
CH+1
CH
– 1
CH+2
CH
– 2
CH+15
CH
– 15
IEX+
IEX
–
R
1
R
2
R
3
R
16
R
T
=R
1
+...+ R
16
″ 5k 
CH+8
CH+0
CH
– 0
CH
– 8
CH+9
CH+1
CH
– 1
CH+15
CH+7
CH
– 7
CH – 15
CH
– 9
R
1
R
2
R
8
Any R 5k