New GM328A Transistor
Tester Diode Capacitance Voltage Frequency Meter PWM Square Wave
Signal Generator
Product
Features:
Digital LCD display, easy to
read, can display measurement data and graphics
Rotary switch control, button
measurement easy to use
Long press the test button to
exit the frequency measurement function Frequency measurement range
from 1Hz to more than 1MHz, when the measured frequency is lower
than 25KHz, the display period
Square wave generator, with
multiple square wave frequencies to choose from, left or right turn
the test button to switch between different square wave
frequencies, long press the test button to exit the square wave
generator
Pulse generator, left or right
test button to adjust the duty cycle of the pulse from 1% - 99%.
Press and hold the test button to exit the pulse
generator
Power supply using 5V Type-c
power connector, customer can also solder 9V battery
connector
Auto shutdown, shutdown current
is only about 20nA
Note:
Before testing the capacitor,
discharge the capacitor before inserting it into the test holder
for measurement, otherwise there is a risk of damaging the tester's
microcontroller.
Input voltage:
DC5V
Working voltage: about
30mA.
Transistor tester
control
The tester is controlled by a
rotary encoder switch.
The rotary encoder switch can
be operated in 6 ways, short press, long press, left turn, right
turn, press and hold left turn, press and hold right
turn.
A short press in the off state
will turn on the power and start the test.
After a test is completed, if
no device is detected. Long press the switch or rotate the switch
left or right to enter the function menu. After entering the
function menu, the left or right switch can select up or down the
menu item, and to enter a certain function item, press the switch
once short. When it is necessary to exit from a certain function,
then long press the switch.
Calibration.
Tester calibration is used to
eliminate the error of its own components, making the final test
results more accurate. Calibration is divided into quick
calibration and full function calibration.
The operation method of quick
calibration: use the wire to short the three test points TP1, TP2,
TP3, and then press the test button, while paying attention to the
screen. The screen color will change to white letters on a black
background, and after the prompt message "Selftest mode...? ",
press the test button to enter into the fast calibration process;
if no button is pressed within 2 seconds after the message
"Selftest mode...? after the message "Selftest mode...?", no button
is pressed within 2 seconds, then a normal test process is carried
out, and finally the resistance values of the three test points of
TP1, TP2 and TP3 are displayed. After entering the fast calibration
process, some data will appear on the screen, ignore it. Wait until
a flashing string appears on the screen
After "isolate Probes!", remove
the shorted TP1, TP2 and TP3 wires. Wait until the string "Test
End" appears on the screen, then the quick calibration is complete.
When calibrating for the first time, use the full function
calibration method.
The full function calibration
is accessed from the function menu and requires an additional 220nf
capacitor. Full-function calibration performs a more comprehensive
calibration process and can take longer. Once in the function menu,
rotate the test button to the menu item "Selftest", then press the
test button to enter the full function calibration process, which
begins with the flashing string "short Probes! When the flashing
string "isolate Probes!" appears on the screen, remove the wires
from the three test points and continue to wait for the calibration
process to proceed, when the string "1-||- 3 > 100nf", install
the prepared 220nf capacitors on the test points TP1 and TP3. Wait
until the screen prompts "Test End", and the fully functional
calibration process is complete.
Shipping
List.
GM328A Transistor Tester
X1
Tester multi-funcțional ce detecteaza automat tranzistori
NPN și PNP, FET, diode, tiristor, SCR, identificarea automată a
iesirii pentru tranzistor.
De asemenea, poate fi folosit ca generator de semnal
dreptunghiular si PWM.
Caracteristici:
Ecran
LCD digital pentru citirea ușoară, poate afișa datele măsurate și
grafică.
Integratul principal este DIP, ușor pentru
amatorii de electronice
Oprire
automată
Poate masura factorul de amplificare de
curent tranzistor PNP comun-emitor, baza-emițător, tensiune de
prag, de pe colector - curentul de scurgere
emițător.
Suporta măsurarea a 2 rezistențe, arată
valori pozitive și negative, tensiune la
stare.
Pentru următorul rezistor 2100Ω măsurare
inductanță de la 0.01mH - 20H.
Poate fi folosit ca
generator de semnal și frecvențmetru: gama de frecvențe de la
1Hz-2MHz și poate genera 1% -99% PWM (puls lățime de modulare)
semnale.
Înștiințare:
Înainte de măsurare
condensatori, acestia trebuie sa fie descarcati, în caz contrar,
foarte probabil, rezulta deteriorarea aparatului.
Specificații:
Afișaj: 160 * 128
LCD
Alimentare: 1 * 9V baterie (nu sunt
incluse); DC 6.8-12V
Curent:
Aprox. 30mA
Măsurarea
rezistenței: max.
50MΩ
Rezoluție
Rezistență: 0.01Ω
Capacitance de măsurare: 25pF ~
100mF
Rezoluție condensatori:
1pF
DC Măsurarea tensiunii: Până la
50V
Dimensiune ecran: 3.7 * 3cm / 1,45 *
1.18in
Dimensiune PCB: 7.8 * 6,2 cm / 3,1 *
2.44in
