A: The data logger is equipped with an electronic fuse. This type of fuse can only be tested under load, measuring and comparing the voltages on both sides of the fuse.
T: Fuses can be found on a ML-PB-XX power or ML-x17 main board.
In the example, the procedure to check an electronic fuse is shown, step by step.
Example:
- Use a (digital) volt meter with precision probes.
- Open the data logger, when checking the main board fuse, find a Gnd pin on one of the X<n> connectors.
- When checking a power board fuse, find a local Gnd on the power board.
- Connect an USB cable and go into the configuration menu.
- This will bring the data logger to the active (awake) state.
- For peak current testing, perform a modem or sensor test from the menu.
- During the test, read and remember the fuse upper side voltage.
- While the test is still active, read the fuse lower side voltage and compare it with the previous (upper side) voltage.
- The voltages must be near-equal. (They may differ a few mili Volts).
*ML-x17 main board: X1-5/6, X2-6, X3-4, X5-3, X6-1/2
If values don’t align, the fuse may be corroded or defect and can be changed.
According to the board where the fuse resides, read one of these FAQ’s:
- Change the main board fuse
- Change the power board fuse