National Instruments SCB-68 User Manual download pdf (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

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