Details:
Features:
Digital LCD display, easy to read, can display measurement data and graphics
Rotary switch control, button measurement is easy to use
Long press the test button to exit the frequency measurement function. The frequency measurement range is from 1Hz to more than 1MHz. When the measured frequency is lower than 25KHz, the display period
Square wave generator, there are multiple square wave frequencies to choose from, left or right rotation test button to switch 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%. Long press the test button to exit the pulse generator
Use 5V Type-c power supply interface for power supply, customers can also solder 9V battery interface for power supply
Automatic shutdown, shutdown current is only about 20nA
Note: Before testing the capacitor, discharge the capacitor first, and then insert it into the test socket for measurement, otherwise it may damage the microcontroller of the tester.
Specification:
Input voltage: DC5V
Working voltage: about 30mA,
Transistor Tester Control
The tester is controlled by a rotary encoder switch,
The rotary encoder switch can have a total of 6 operations, short press, long press, left rotation, right rotation, press and hold left rotation, press and hold right rotation.
Short press once in the off state to turn on the power and start the test.
After a test is completed, if no device is detected. Long press the switch or the left and right rotary switch to enter the function menu. After entering the function menu, the left or right rotary switch can be used to select up and down menu items. To enter a certain function item, short press the switch once. When you need to exit from a function, press and hold the switch.
Calibration:
Tester calibration is used to eliminate the error of its own components, so that the final test results are more accurate. Calibration is divided into quick calibration and full function calibration.
The operation method of quick calibration: short-circuit the three test points TP1, TP2 and TP3 with wires, then press the test button and observe the screen at the same time. The color of the screen will turn into white characters on a black background. After the prompt message "Selftest mode..?" appears, press the test button to enter the quick calibration process; if the prompt message "Selftest mode..?" appears, 2 seconds If there is no button in the clock, a normal test process will be carried out, and finally the resistance value of the short-circuited TP1, TP2, TP3 three test point wires will be displayed. After entering the quick calibration process, some data will appear on the screen, leave it alone. Wait until the flashing string appears on the screen
After "isolate Probes!", remove the wires that short-circuit TP1, TP2, and TP3. The quick calibration is complete until the string "Test End" appears on the screen. When calibrating for the first time, use the full-function calibration method.
Full-function calibration needs to be entered from the function menu, and another 220nf capacitor needs to be prepared. Full-featured calibration performs a more comprehensive calibration process that takes longer. After entering the function menu, turn the test button to the menu item "Selftest", and then press the test button to enter the full-function calibration process, the flashing string "short Probes!" first appears on the screen, at this time, the same as the quick calibration, Use wires to short-circuit the three test points, and wait for the calibration process to proceed. When the flashing string "isolate Probes!" appears on the screen, remove the short-circuited wires between the three test points and continue to wait for the calibration process to proceed. When the string "1-||-3 > 100nf" is output, install the prepared 220nf capacitors on test points TP1 and TP3. Wait until the screen prompts "Test End", the full-function calibration process is complete.
Package Contents:
GM328A Transistor Tester X1
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
