Télécharger Imprimer la page

VOLTCRAFT VC-5080 Notice D'emploi page 39

Publicité

Les langues disponibles

Les langues disponibles

f) Diode test
Make sure that the circuit components, circuits and components to be measured or any other
measuring objects are voltage-free and discharged.
Determined by the design the black measuring tip corresponds to the anode when using this
measuring function!
During the diode test, a diode's forward voltage "U" (UF = flow direction, UR = reverse direction) and the operating
current "I" (IF = flow direction, IR = reverse direction) is calculated.
Proceed as follows to conduct a diode test:
- Turn the rotary switch to the measuring function "Ω" and the measuring range ap-
propriate for your diode. Start with the lowest range (x100k/1.5 µA) and then switch
step by step to a higher range (up to max. x1/150 mA).
- Connect the black test lead to the COM socket (6) and the red test lead to the V/Ω
socket (7).
- Zero the multimeter using the adjustment screw (3).
- Make sure that the "Vrms/Vp-p" button (9) is not pressed.
- Connect both test leads and wait until the scale indicator has stabilized. The
display should show a value of approx. 0 ohm. Zero the meter to 0 ohm using the
0 ohm adjustment knob (8) in case of deviation. If a zero adjustment cannot be
conducted, the mignon (AA) batteries are in need of replacement.
- In order to measure the flow direction, connect the black measuring tip with the
anode and the red measuring tip with the cathode. Always also conduct a counter-
pole measurement.
- Read the measured value for the voltage (UF/UR) from the "LV" scale using the
unit volt (V).
- The operating current (IF/IR) is shown on the "LI" scale. The unit corresponds to the selected measuring range
(µA/mA).
The operating current can be selected from 1.5 µA to 150 mA. Caution! Too high a current may damage the
component at hand.
- If no value is shown, the diode is measured in reverse direction or the diode is defective (interrupted).
- After measurement, turn the rotary switch to position "OFF" to turn off the multimeter.
39

Publicité

loading

Ce manuel est également adapté pour:

1218859