EGAmaster EGAtronik 51252 Manuel D'instructions page 18

RESISTANCE MEASUREMENT (see Figure 2b)
1. Switch the dial to "Ω" position.
2. lnsert the black test lead into the COM jack, the red test lead into the "VΩmA" jack.
Connect test leads with the resistor in parallel.
Notes:
- Before measuring resistance, switch off the power supply of the circuit, and fully
discharge all capacitors.
- lf the resistance when probes are shorted is more than 0.5Ω, please check if test leads
are loosened or damaged.
- lf the resistor is open or over the range, the "OL" symbol will be displayed on the screen.
- When measuring low resistance , the test leads will produce 0.1Ω - 0.2Ω measurement
error. To obtain accurate measurement, the measured value should subtract the value
displayed when two test leads are shorted.
- When measuring high resistance above 1MΩ, it is normal to take a few seconds to
steady the readings. In order to quickly obtain steady data, use short test wires to
measure high resistance.
CONTINUITY MEASUREMENT (see Figure 2b)
1. Switch the dial to "
2. lnsert the black test lead into the COM jack, the red test lead into the "VΩmA" jack.
Connect test leads with the points to be tested in parallel.
3. lf measured points' resistance >51Ω, circuit is in open status.
lf measured points' resistance
off.
Notes:
- Before measuring continuity, switch off all power supplies and fully discharge all
capacitors.
DIODE MEASUREMENT (see Figure 2b)
1. Switch the dial to "
2. lnsert the black test lead into the COM jack, the red test lead into the "VΩmA" jack
Connect test leads with the diode in parallel.
3. "OL" symbol appears when the diode is open or polarity is reversed. For silicon PN
junction, normal value: 500
Notes:
Before measuring PN junction, switch off the power supply to the circuit, and fully discharge
all capacitors.
18
" position.
≤
10Ω, circuit is in good conduction status, buzzer will go
" position.
~
800mV (0.5
~
0.8V).