Idiomas disponibles
Idiomas disponibles
10.5 RESISTANCE MEASUREMENT
Do not conduct resistance measurements on live circuits. Make sure
all capacitors in the circuit are depleted.
Set the rotary switch in the desired "Ω" position.
1.
Connect the red test lead to the "V
2.
test lead to the "COM" jack.
3.
Connect the test leads to the resistor to be measured and read the
LCD display.
Notes
•
If the resistance value being measured exceeds the maximum value of
the selected range, an over-range is indicated by 1. Set to a higher
range. For resistance of ± 1 M and above, the meter may take a few
seconds to stabilize. This is normal for high resistance readings.
•
When the input is not connected, i.e. open circuit, OL or -OL will be
displayed for the over-range condition.
10.6 DIODE AND CONTINUITY TEST
Do not conduct diode or continuity measurements on live circuits.
Make sure all capacitors in the circuit are depleted.
Set the selector switch to the desired "2000
1.
Connect the red test lead to the "V
2.
one to the "COM" jack.
3.
For measuring the diode, connect the red test lead to the anode of the
diode to be tested and the black test lead to the cathode of the diode.
The approx. forward voltage drop of the diode will be displayed.
For measuring continuity, connect the test leads to two points of the
circuit to be tested. If continuity exists, the built-in buzzer will sound.
10.7
TRANSISTOR hFE
Set the selector switch to the desired "hFE" position.
1.
Connect the red test lead to the "V
2.
one to the "COM" jack.
3.
Determine whether the transistor is NPN or PNP and locate the emitter,
bas and collector leads. Insert the leads into the proper holes in the
transistor test conversion plug and read the LCD display.
V. 01 – 11/06/2020
DVM857
hFEmA" jack and the black
hFEmA" jack and the black
hFEmA" jack and the black
13
" position.
©Velleman nv
