Id: 4540
- Item Code/Product Code: A9
- Weight: 0.35kg
- SKU: 52537
JTX A9 digital Waveform Ammeter With Voltage Current And Diode Testing
Traditional multimeters only show numbers, making it difficult for technicians to judge dynamic current behavior, voltage instability, or hidden faults during real repair work. This limitation slows down diagnosis and increases the risk of misjudgment. The JTX A9 Digital Waveform Ammeter Voltage And Current Tester solves this problem by combining waveform visualization, pointer style monitoring, and digital measurement in one device. It captures real time voltage and current changes with millisecond level response. Technicians rely on the JTX A9 because it provides clearer fault signals, faster judgment, and safer testing when working on mobile devices, charging circuits, and electronic boards.
Key Features
- Real time waveform analysis for voltage and current behavior
- Three display modes for accurate judgment
- Pointer curve mode for intuitive current trend observation
- Digital display mode with large font for easy reading
- Waveform mode to analyze voltage and current fluctuations
- Millisecond level instantaneous dynamic voltage measurement
- Dual channel voltage and current detection up to 40V
- Short circuit protection reminder
- High voltage intelligent reminder for safer operation
- Supports USB function expansion and upper computer function
Specification Key
| Parameters | Details |
|---|---|
| Brand | JTXTOOLS |
| Model | A9 |
| Input Voltage DC | 0 to 36V |
| Detection Current | 0 to 8A |
| Protection Voltage | Less than 60V |
| Protection Current | Less than 15A |
| Banana Plug Output | 40V 8A |
| Voltage Resolution | 1mV |
| Current Resolution | 0.1mA |
| Current Accuracy | 0.5mA |
| Screen Size | 4.0 inch |
| Screen Resolution | 320 x 480 |
| Device Power Supply | 5V 2A |
| Diode Test Range | 0 to 2.8V |
Usage Benefit
- Observe current and voltage trends instead of static numbers
- Quickly judge abnormal current range using pointer mode
- Diagnose charging and power faults more accurately
- Detect short circuits and high voltage risks early
- Improve troubleshooting efficiency during motherboard repair
- Suitable for mobile, PCB, and electronics diagnostics
Installation Tips
- Power the device using a stable 5V 2A supply
- Connect test leads securely before measurement
- Select pointer mode for fast current judgment
- Use waveform mode for unstable voltage or charging analysis
- Do not exceed protection voltage and current limits
- Use PC connection when waveform recording is required
Product Package
- 1x JTX A9 Digital Waveform Ammeter
- 1x Pair of test leads
FAQs
- Q1. Why this product is needed instead of a normal multimeter
- Because it displays waveform and trend data that numeric-only meters cannot show.
- Q2. What display modes are available
- Pointer curve mode, digital display mode, and waveform mode.
- Q3. Can it detect short circuits
- Yes, it includes short circuit protection reminders.
- Q4. Is it suitable for charging circuit diagnosis
- Yes, it is designed for voltage, current, and charging behavior analysis.
- Q5. Does it support PC connection
- Yes, it supports upper computer function and USB expansion.

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