Calibration trimpots, Figure 5-1. calibration trimpot location diagram, Figure 5-1 – National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ User Manual

Page 75: Calibration trimpot location diagram

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Calibration

Chapter 5

Lab-PC+ User Manual

5-2

© National Instruments Corporation

Calibration Trimpots

The Lab-PC+ has six trimpots for calibration. The location of these trimpots on the Lab-PC+
board is shown in the partial diagram of the board in Figure 5-1.

1

2

3

4

5

6

7

1

R1

3

R3

5

R5

7

R7

2

R2

4

R4

6

R6

Figure 5-1. Calibration Trimpot Location Diagram

The following trimpots are used to calibrate the analog input circuitry:

R7 – Input offset trim, analog input

R6 – Output offset trim, analog input

R5 – Gain trim, analog input

The following trimpots are used to calibrate the analog output circuitry:

R3 – Gain trim, analog output Channel 1

R4 – Offset trim, analog output Channel 1

R1 – Gain trim, analog output Channel 0

R2 – Offset trim, analog output Channel 0

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