Aideepen | 200Hz to 100MHz Pen-Style Frequency METER OLED Display High-Precision Frequency Counter FOR RF Measurement Ham Radio Transceiver

Features:1. Dedicated SJ8K24P-T chip delivers measurement accuracy up to 10Hz/1Hz with stable and reliable performance2. Equipped with ±2.5ppm temperature-compensated crystal oscillator for high frequency stability, ideal for precision frequency measurement3. 0.91-inch blue OLED display provides clear visibility for real-time frequency readings4. Switchable MHz/KHz/Hz unit display for quick frequency identification and user-friendly operation5. Compact, portable acrylic housing with high signal sensitivity, ideal for on-site high-frequency detectionProduct Specifications:Product Name: Frequency Test PenPower Supply: DC 4.5-5.5V (5V recommended)Operating Current: Approx. 30mA (at DC 5V)Frequency Stability: ±2.5ppmGate Time: 0.1/1.0 SecondMeasurement Accuracy: 10/1HzMeasurement Range: 200Hz~100MHzInterface: Type C PortDisplay: 0.91-inch OLED ScreenAuto Memory: Settings automatically saved upon power off, recalled upon startupProduct Function: High-precision pen-style RF frequency counter with real-time frequency displayApplication Scenarios: MCU oscillator calibration verification, wireless communication device testing, frequency generator calibration, etc.Description:The PLJ-091OLED-L1 is a cost-effective OLED display pen-style frequency counter featuring a compact, portable design. This product measures signals requiring high frequency accuracy, such as verifying the precision of microcontroller system crystal oscillators and assessing the reliability of communication port output timing.Display Digit Specifications:0.91-inch OLED display shows up to 8 digits. For signals exceeding 100MHz in MHz or KHz mode, the leading digit “1” is omitted. Press K2 to switch units to Hz for full display.Notes:1. For signal ground connections, use only the shielding layer of shielded cables; do not use the inner conductor.2. Do not use fast-charging adapters, as they may output voltages exceeding 5V.Troubleshooting:1. Why does the frequency reading fluctuate?Answer: First, ensure the input signal quality (strength, stability, etc.) meets the minimum requirements of the frequency tester. Additionally, verify power supply quality—ripples should not be excessive. Alternatively, adjust sensitivity via the trimming resistor.2. Why does the reading fluctuate irregularly when no signal is connected?Answer: This product has high sensitivity and easily detects environmental interference. First, check if the power supply providing electricity to the frequency tester has excessive ripple. Second, inspect for strong signal radiation sources near the frequency tester, such as computers, fluorescent lights, or switching power supplies. The display should read zero in the absence of strong signal interference sources.Shipping List:Frequency Counter x1Power Cable x1Signal Ground Cable x1