Product Description Precise Details: Specification: 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: Easy-to-read digital LCD display for data and graphics. Effortless operation with the rotary switch control. Long press the test button to exit frequency measurement; range from 1Hz to over 1MHz. Square wave generator with adjustable frequencies. Exit by long pressing the test button. Pulse signal generator with duty cycle adjustment from 1% to 99%. Exit by long pressing the test button. Power supply via 5V Type-C interface, with an option for a 9V battery interface. 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. 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. Full Function Calibration: Begin in the function menu and select "Selftest." A 220nF capacitor is required. Follow on-screen instructions to complete the calibration.
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