Major tech MT800 Instrukcja obsługi - Strona 6

Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Multimetr Major tech MT800. Major tech MT800 8 stron. Analogue multimeter

8. DC/AC VOLTAGE MEASUREMENTS

WARNING: Use extreme care when making measurements for high

voltage. Do not touch terminals or probe ends.

1. Plug the test leads into the correct jacks (black into '-' and red into '+')

2. Set range switch to one of the DCV/ACV positions. If you are not

certain about the voltage level, start with 500V range.

3. Touch the test probe tips to the circuit under test, be sure to observe

correct polarity.

4. Read the voltage on the black DC/AC scales. For AC 10V, read the red

AC 10V scale.

WARNING: Do not apply voltage to measuring terminals while range

switch is in current position

1. Plug the test leads into the correct jacks.

2. If you are not certain about the current level, start with 250mA range.

3. Open up the circuit in which you want to measure current and connect

the black lead to the negative side and the red lead to the positive side

of the circuit.

4. Apply power to the circuit under test and read the current on the black

DC scale.

10. RESISTANCE MEASUREMENTS

WARNING: Do not apply voltage to measuring terminal while range

switch is in ohms position.

1. Plug the test leads into the '-' and '+' jacks.

2. Set range switch to the OHM position (Rx10 or Rx1k ohms) touch the

test probe tips together and adjust the OHMS ADJUST control to bring

the pointer to the '0' on the top (green) OHMS scale.

3. Now. touch the probe tips across the circuit or the part under test.

4. Read the resistance on the green OHMS scale.

NOTES: when you are unable to adjust the pointer to '0' on the OHMS

scale, the battery must be replaced.

11. NOTE FOR TESTING SEMI CONDUCTOR JUNCTIONS

When attempting to identify cathode and anode ends or the type of

transistor (PNP) or (NPN), the actual polarity of meter's voltage is opposite

of the lead colours. The red lead is the '-' source and black lead is '+'.

CAUTION: Always disconnect test leads before replacing battery.