Velleman AVM360 Manual Del Usuario página 6

4.2 DCV test
1. Plug the red test lead into the + socket and the black one into the - COM.
2. Set the range selector to a selected DCV range position.
3. Connect the red test lead to the positive polarity of the circuit tested and the black one to the negative.
4. Read the DCV.A scale referring the reference table.
4.3 ACV test
1. Plug the red test lead into the + socket and the black into the - COM socket.
2. Set the range selector to a chosen ACV range position.
3. Connect the test leads to the circuit being tested regardless of the polarities.
4. Read ACV scale with the reference table.
4.4 DCA test
1. Place the red test lead into the + socket (or DC 10 A socket) and the black in the - COM.
2. Set the range selector at a selected DCA range position.
3. Connect the red test lead to the positive polarity of the circuit tested and the black into the negative.
4. Read the DCV.A scale converted with the reference table.
4.5 ACV test on output terminal
1. Plug the red test lead into the OUTPUT socket and the black one into the - COM.
2. Set the range selector at the selected range position. Connect the test leads to the circuit to be tested and read
the scale in the same manner as ACV test. Such a measurement is made to block the DC voltage which is
present in the same circuit and must be cut out so that AC voltage can be read alone.
4.6 Iceo transistor test
1. Plug the test leads into + and - COM sockets.
2. Set the range selector to x10 (15mA) for small size transistor, or to x1 (150mA) for big size transistor.
3. Adjust 0Ω ADJ to set the pointer to zero position of the Ω scale.
4. Connect the transistor with the tester:
For NPN transistor, the "N" terminal of the tester is connected with the COLLECTOR (C) of the transistor and
the "P" terminal with the EMITTER (E) of the transistor.
For PNP transistor, reverse the NPN transistor connection.
5. Read Iceo range. If the pointer is within the LEAK zone or the pointer moves up near the full scale, the tested
transistor is not good. Otherwise it is a good transistor.
4.7 hFE (DC amplification) transistor test
1. Set the range selector to x 10.
2. Adjust 0Ω ADJ to adjust the pointer to zero position.
3. hFE (DC amplification) test.
AVM360
For NPN transistor For PNP transistor
6 VELLEMAN