Usage of fluke multimeter
1. When changing the function and range, the test lead should leave the test point, select the correct function and range during the test, and beware of misoperation.
2. For AC voltage measurement, first turn the range switch to the corresponding ACV range, and then connect the test lead across the circuit under test.
3. For DC current measurement, first turn the range switch to the corresponding DCA gear, and then connect the meter to the circuit under test.
4. For AC current measurement, first turn the range switch to the corresponding ACA position, and then connect the instrument to the circuit under test.
5. For resistance measurement, turn the range switch to the corresponding resistance range, and connect the two test leads across the resistance under test.
6. Capacitance measurement, turn the range switch to the corresponding capacitance range, connect the test probe across the capacitor under test and both ends to measure, and pay attention to the polarity if necessary.
7. The voltage below 36V is a safe voltage. When measuring higher than 36V DC and 25V AC, check whether the test leads are in reliable contact, whether they are connected correctly, whether they are well insulated, etc. to avoid electric shock.
8. For DC voltage measurement, first turn the range switch to the corresponding DCV range, then connect the test lead across the circuit under test, and the voltage and polarity of the point connected by the red test lead will be displayed on the screen.
9. To measure the magnification of the tube, set the range switch to the hFE position to determine whether the transistor to be measured is NPN type or PNP type, and insert the emitter, base and collector into the corresponding holes respectively.
10. For the pole tube and on-off test, set the range switch to the gear, connect the red meter to the anode of the diode, and the black meter to the cathode of the diode. When measuring the continuity of the circuit, connect the test leads to both ends of the circuit to be tested, if the buzzer sounds, the circuit is connected, otherwise the circuit is disconnected.
