Which mode of the 8025A is particularly useful when monitoring test leads after positioning?

The HOLD mode of the 8025A is particularly useful when monitoring test leads after positioning because it allows the displayed measurement to remain constant even if the test leads are disconnected or the measurement conditions change. This feature is essential for ensuring that the technician can make adjustments or observations without losing the current reading. When utilizing the HOLD mode, you can take the time to analyze the results without the risk of fluctuation in the displayed values, which enhances the accuracy and reliability of the testing process.

In contrast, the other modes may not provide the same level of stability when monitoring. For example, the SET mode is typically used to define or set parameters for the test, and it does not maintain a static reading. RANGE mode allows for adjusting the measurement range but does not hold values. CHECK mode may be used for verifying instrument functionality or settings but lacks the focused capability of retaining a measurement for detailed observation.