Velleman Vtset24 Bedienungsanleitung Seite 7

6. Transistor hFE Measurements
1) Connect the black test lead (-) to the "COM" jack and the red test lead
(+) to the "mA" jack.
2) Select the hFE-range with the Range switch.
3) Determine whether the transistor is of the NPN- or PNP-type and locate
the emitter, the base and the collector. Insert the leads into the proper
holes in the included transistor socket.
4) Connect the black test lead (-) to the "COM" terminal and the red test
lead (+) to the other terminal of the transistor socket.
5) The display will show the approximate hFE-value at the moment of
testing. Base current 10µA, Vce 2.8V.
Specifications
Maximum accuracy is guaranteed for a one-year period after calibration.
Ideal circumstances require a temperature of 23°C (± 5%) and a max.
relative humidity of 75%.
1. General
Max. voltage between
terminal and earth
Display
Fuse Protection
Power Supply
Ranging Method
Polarity Indication
Overrange Indication
Dimensions
2. DC Voltage
Range
200mV
2000mV
20V
200V
500V
Overload protection: 220Vrms AC for the 200mV range and 500VDC or
3. AC Voltage
Range
200V
500V
Overload protection: 500VDC or 500Vrms for all ranges
Frequency range: 45Hz - 450Hz
12.02.2010
VTSET24/VTSET26
500VDC or VAC rms (sine wave)
3 ½-digit LCD, 2 - 3 readings per sec.
200mA range : F 0.5A/250V (resettable)
10A range : F 10A/250V
2x AAA (LR03C, not incl.)
Manual
" - " displayed
" 1 " displayed automatically
126 x 70 x 27mm
Resolution
100µV
1mV
10mV
100mV
1V
500Vrms AC for other ranges.
Resolution
100mV
1V
±0.5% of rdg ±2 digits
±0.8% of rdg ±2 digits
±1.0% of rdg ±2 digits
±1.5% of rdg ±10 digits
7
Accuracy
Accuracy
©Velleman nv