Velleman DVM 68 Operation Manual - page 7
VELLEMAN GB
6
3.7 Transistor Test
1) Set the function switch at hFE position.
2) Identify whether the transistor is NPN or PNP type and locate emitter, base and
collector lead. Insert leads of the transistor to be tested into proper holes of the testing
socket on the front panel.
3) LCD display will show the approximate hFE value at the test condition of base
current 10 µA and Vce 3.2V.
4. Specifications
Accuracy is specified for a period of one year after calibration and at 18°C to 28°C
with relative humidity to 80%.
4.1 General
Max. voltage between terminal and earth
1000V DC or 750V AC rms (sinus)
Display
3 ¾ digit LCD, 3260 counts max,
2-3 readings / sec
Fuse protection
µA & mA range : F 300mA/250V
A range : F 10A/250V
Power Supply
9V battery
Ranging method
Auto / Manual
Polarity indication
" - " displayed
Overrange indication
" OL " displayed automatically
Low Battery indication
"
" displayed
Operating temperature
0°C to 40°C
Storage temperature
-10°C to 50°C
Dimensions
91 x 189 x 31.5 mm
Weight
310 g (incl. battery)
4.2 DC Voltage
Range
Resolution
Accuracy
326mV
0.1mV
±
0.5% of rdg
±
2 digits
3.26V
1mV
32.6V
10mV
±
0.3% of rdg
±
2 digits
326V
0.1V
1000V
1V
±
0.5% of rdg
±
2 digits
Input impedance : 10M
Ω
, more than 100M
Ω
at 326mV range