Question: Which of the following adjustments is usually adjusted first in an instrument requiring calibration?
A Linearity
B Zero
C Span
D Hysteresis
Answer: Zero
| Calibration Adjustment | Description |
| Zero Adjustment | Setting the instrument to read zero when there is no input or when it is in a known reference state. |
| Span Adjustment | Adjusting the full-scale range of the instrument so that it accurately represents the maximum expected input. |
| Linearity Adjustment | Correcting any deviations from a linear response throughout the instrument’s measurement range. |
| Hysteresis Adjustment | Addressing the phenomenon where an instrument’s output varies depending on whether the input is increasing or decreasing. Hysteresis adjustments help minimize this effect. |
| Sensitivity Adjustment | Fine-tuning the instrument’s sensitivity to ensure it provides accurate measurements. |
| Offset Adjustment | Shifting the baseline of the instrument’s output to align with the reference point or standard value. |
| Damping Adjustment | Controlling the instrument’s response time to prevent rapid fluctuations in readings, ensuring stability and accuracy. |
| Gain Adjustment | Modifying the amplification factor to achieve the desired output for a given input. |
| Temperature Compensation | Some instruments require adjustments to compensate for changes in temperature that can affect their accuracy. |
| Resolution Adjustment | Changing the level of detail or precision in the measurements, often related to digital instruments. |
| Filtering Adjustment | Adjusting the level of noise filtering to reduce unwanted interference in the measurements. |
| Calibrating Reference | Ensuring that the instrument is calibrated to a known reference standard. |