GM328A Transistor Tester & Signal Generator - Diode, Capacitance, ESR, Voltage & Frequency Meter

Product Description

Precise Details:

• Input Voltage: DC5V
• Operating Voltage: Approximately 30mA

Control: The transistor tester is managed by a rotary encoder switch, which supports six operations: short press, long press, left turn, right turn, press left turn, and press right turn.

To power on and initiate a test, press the switch once when the device is off. If no device is detected after a test, you can access the function menu by either long pressing or rotating the switch. Navigate the menu using the left or right turn of the switch, and select a function by pressing it once. To exit a function, hold down the switch.

Features:

1. Easy-to-read digital LCD display for data and graphics.
2. Effortless operation with the rotary switch control.
3. Long press the test button to exit frequency measurement; range from 1Hz to over 1MHz.
4. Square wave generator with adjustable frequencies. Exit by long pressing the test button.
5. Pulse signal generator with duty cycle adjustment from 1% to 99%. Exit by long pressing the test button.
6. Power supply via 5V Type-C interface, with an option for a 9V battery interface.
7. Automatic shutdown feature with a shutdown current of about 20nA.

Note: Discharge capacitors before testing to avoid damage.

Package Includes:

• 1x GM328A Transistor Tester

Calibration:

Calibration is necessary to ensure accurate test results by correcting component errors. There are two calibration types: quick and full-function.

1. Quick Calibration:
   • Short connect test points TP1, TP2, and TP3, then press the test button.
   • On screen, when "Selftest mode.. ?" appears, press the button to start.
   • After completion, follow the screen’s instructions to isolate the probes and complete the process.
2. Full Function Calibration:
   • Begin in the function menu and select "Selftest."
   • A 220nF capacitor is required. Follow on-screen instructions to complete the calibration.