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
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