Description
The ZOYI ZT-703S is a versatile 3-in-1 testing instrument that combines a dual-channel oscilloscope, True RMS digital multimeter, and signal generator in one portable device. It is designed for electronics repair, circuit diagnostics, waveform analysis, electrical maintenance, and troubleshooting where multiple testing functions are required.
Its 50MHz dual-channel bandwidth, sampling rate up to 280MSa/s, and 128K record depth help capture and analyze changing signals in detail. A 25,000-count multimeter, 3.5-inch color display, waveform storage, persistence mode, and rechargeable 3400mAh battery make it suitable for both workshop and field applications.
Key Features
- 3-in-1 oscilloscope, multimeter, and signal generator
- Dual-channel 50MHz oscilloscope with up to 280MSa/s sampling
- 25,000-count digital multimeter with auto/manual range
- 128K record length for detailed waveform capture
- One-key AUTO adjustment for faster testing
- Persistence mode for identifying irregular waveform activity
- Screenshot and waveform storage with USB data transfer
- 3400mAh rechargeable battery with Type-C charging
Specifications
| Specification | Details |
|---|---|
| Brand | ZOYI |
| Model | ZT-703S |
| Product Type | 3-in-1 Test Instrument |
| Oscilloscope Channels | 2 |
| Analog Bandwidth | 50MHz |
| Sampling Rate | Up to 280MSa/s |
| Sampling Method | Real-Time |
| Record Length | Up to 128Kbyte |
| Sweep Range | 10ns/div – 20s/div |
| Vertical Sensitivity | 20mV/div – 10V/div |
| Input Coupling | AC / DC |
| Input Impedance | 1MΩ / 16pF |
| Probe Attenuation | 1X / 10X |
| Rise Time | <10ns |
| DC Gain Accuracy | ±3% |
| Trigger Modes | Auto / Normal / Single |
| Display Modes | YT / XY / Roll |
| Multimeter Display Count | 25,000 Counts |
| Range Selection | Auto / Manual |
| DC Voltage | 25.000mV – 1000.0V |
| AC Voltage | 25.000mV – 750.0V |
| DC Current | 25.000mA – 10.000A |
| AC Current | 25.000mA – 10.000A |
| Resistance | 250.00Ω – 250.0MΩ |
| Capacitance | 9.999nF – 9.99mF |
| Frequency | 99.99Hz – 999.9kHz |



