National Instruments SCXI-1321 Figure 4. Half-Bridge Nulling Circuit

© National Instruments Corporation 11 SCXI-1321 Terminal Block Installation Guide
Figure 4. Half-Bridge Nulling Circuit
CH+CH+
CH–
EX+
EX–
+
–
+
–
R1
R2
4.5 kΩ
4.5 kΩ
RSCAL
301 kΩ
RTrim
10 kΩ
RNull
39.1 kΩ
(Screw Adjusts Potentiometer)
RL
RL
RL
R4(gauge)
EX+
CH+
CH+
CH–
EX+
EX–
RTrim
SCXI-1121 SCXI-1321 Transducer
VEX
EX–
R3(gauge)
Note: R1 and R2 are completion resistors.