National Instruments SCB-68 - Manual (Page 45)

Chapter 4 Using Thermocouples
© National Instruments Corporation 4-3 SCB-68 Shielded Connector Block User Manual
Figure 4-1. Single-Ended Switch Configuration
For differential operation, connect differential analog channel 0 to the
temperature sensor by switching S5 and S4 to the up position, as shown in
Figure 4-2.
Figure 4-2. Differential Switch Configuration
Special Considerations
To connect a high-value resistor between the positive input and +5V, refer
to the
Accuracy and Resolution Considerations section of Chapter 5,
Adding Components for Special Functions .
To reduce noise by connecting a lowpass filter to the analog inputs of the
SCB-68, refer to the
Lowpass Filtering section of Chapter 5, Adding
Components for Special Functions .
S1
S2
S5 S4 S3
Signal Conditioning
Circuitry Power (On)
Temperature Sensor
S1
S2
S5 S4 S3
Signal Conditioning
Circuitry Power (On)
Temperature Sensor