Overview
The ZOYI ZOTEK ZT-703S is a versatile and portable electronic testing instrument designed for engineers, technicians, and hobbyists. It combines the functionality of a dual-channel oscilloscope with a built-in signal generator, offering high resolution and a user-friendly interface. Its compact design and 3.5-inch IPS display make it suitable for field use and lab environments.
Key features include:
- 3.5-inch high-resolution IPS display
- 25,000 counts multimeter capability
- Dual-channel oscilloscope
- Built-in signal generator
- USB Type-C charging and data transfer
- Portable and ergonomic design
Controls and Interface
The ZT-703S features a clear layout of buttons and a responsive display for intuitive operation.
Display
The device is equipped with a 3.5-inch color IPS screen, providing clear visibility of waveforms and measurement data.
Operating Modes
The device supports several operational states:
- ▶️ RUN: Starts the measurement or signal generation process.
- ⏳ WAIT: Indicates the device is in a waiting state, possibly for input or a specific condition.
- ⏱️ T'D (Time Delay): Refers to a time delay function, likely for triggering or signal generation.
- ⏹️ STOP: Halts the current measurement or operation.
- ⏸️ HOLD: Pauses the display or measurement.
Button Layout and Functions
The device has dedicated buttons for channel selection, menu navigation, and function execution:
| Button # | Label/Function | Description |
|---|---|---|
| 1 | CH 1 | Selects or configures Channel 1. |
| 2 | CH 2 | Selects or configures Channel 2. |
| 3 | General purpose button, function may vary by menu. | |
| 4 | General purpose button, function may vary by menu. | |
| 5 | General purpose button, function may vary by menu. | |
| 6 | General purpose button, function may vary by menu. | |
| 7 | General purpose button, function may vary by menu. | |
| 8 | General purpose button, function may vary by menu. | |
| 9 | General purpose button, function may vary by menu. | |
| 10 | General purpose button, function may vary by menu. | |
| 11 | General purpose button, function may vary by menu. | |
| 12 | VOL/TIME Menu | Accesses the Voltage/Time settings menu. |
| - | MOVE | Navigates or moves elements within menus or on the display. |
Function Keys (F1-F4)
The four function keys (F1-F4) provide context-sensitive operations depending on the current menu or mode. Their specific actions are detailed within the relevant sections.
- F1: Often used for selection, confirmation, or specific channel functions.
- F2: Typically used for settings, modes, or specific measurement functions.
- F3: Frequently used for menu navigation, parameter adjustment, or specific output functions.
- F4: Commonly used for range selection, scaling, or advanced options.
Oscilloscope Operation
The ZT-703S offers comprehensive control over waveform acquisition and display.
Basic Operation
To begin, select the desired channel (CH 1 or CH 2). The device allows for adjustment of voltage and time base settings via the VOL/TIME menu.
Measurement Parameters
Key oscilloscope parameters can be adjusted:
- Voltage (VOL): Controls the vertical sensitivity (Volts per division). Options typically range from 20mV/div to 10V/div.
- Time (TIME): Controls the horizontal sweep speed (Time per division). Options typically range from 10ns/div to 20s/div.
- Coupling: Supports DC, AC, and GND coupling for input signals.
- Probe Attenuation: Settings for X1 and X10 probes to ensure accurate readings.
Triggering
The trigger system stabilizes the waveform display. Available trigger modes include:
- AUTO: Automatically triggers to display a waveform, even without a trigger signal.
- NORMAL: Triggers only when a valid trigger signal is detected.
- SINGLE: Captures a single event upon trigger detection.
Trigger edge selection (rising or falling) is also available.
Advanced Features
- AUTO/RANGE: Automatically sets the optimal voltage and time base for the input signal.
- REL (Relative Measurement): Allows for relative measurements by setting a reference point.
- XY Mode: Displays the relationship between Channel 1 (X-axis) and Channel 2 (Y-axis).
- Storage: The device can store and recall waveforms and settings.
Signal Generator
The integrated signal generator provides various standard waveforms for testing and calibration purposes.
- Waveform Types: Sine wave, square wave, sawtooth wave, pulse wave, arbitrary waveforms (if supported).
- Frequency and Amplitude Control: Users can set the frequency and amplitude of the generated signal.
- Output Options: The generator can output signals for specific testing scenarios.
Multimeter Functions
The ZT-703S includes a 25,000-count digital multimeter for various electrical measurements.
- DC Voltage (VDC): Measures direct current voltage.
- AC Voltage (VAC): Measures alternating current voltage.
- DC Current (ADC): Measures direct current.
- AC Current (AAC): Measures alternating current.
- Resistance (Ω): Measures electrical resistance.
- Capacitance (F): Measures electrical capacitance.
- Frequency (Hz): Measures signal frequency.
- Diode Test: Checks the forward voltage drop of diodes.
- Continuity Test: Checks for electrical continuity with an audible beep.
The multimeter function offers high precision with 25,000 counts.
Specifications
Detailed technical specifications for the ZOYI ZOTEK ZT-703S:
General Specifications
| Characteristic | Description |
|---|---|
| Display | 3.5-inch IPS Color Screen |
| Counts | 25,000 Counts |
| Power Supply | Built-in Lithium Battery (e.g., 18650) |
| Charging Interface | USB Type-C (5V DC) |
| Material | ABS + TPE |
| Dimensions | 177mm x 89mm x 40mm |
| Weight | Approx. 380g (without battery) |
| Battery Capacity | 2500mAh (typical, if 18650) |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Operating Humidity | < 75% RH |
| Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
| Storage Humidity | < 80% RH |
Oscilloscope Specifications
| Characteristic | Description |
|---|---|
| Channels | 2 |
| Analog Bandwidth | 50MHz |
| Real-time Sampling Rate | 200MSa/s (Normal Mode), 280MSa/s (High-speed Mode) |
| Input Coupling | DC, AC, GND |
| Input Impedance | 1MΩ ± 2%, at 16pF ± 10pF |
| Probe Attenuation | X1, X10 |
| Maximum Input Voltage | X1 range: <150V (DC+AC peak), X10 range: <300V (DC+AC peak) |
| Horizontal Sweep Range | 10ns/div - 20s/div |
| Time Base Accuracy | ±20ppm |
| Record Length | Up to 128Kbyte per channel |
| Vertical Sensitivity | 20mV/div - 10V/div (128 steps) |
| Vertical Offset Range | ±4 grids (positive and negative) |
| DC Gain Accuracy | ±3% |
| Low-Frequency Response | More than 10Hz (at -3dB) |
| Rise Time | Less than 10ns |
| Trigger Modes | Auto, Normal, Single |
| Trigger Edges | Rising edge, Falling edge |
| Auto Measurement | Period, Frequency, Peak-to-Peak, Maximum, Minimum, RMS, Duty Cycle, Pulse Count |
| Display Modes | YT, XY, Roll |
| Persistence Modes | Minimum, 500ms, 1S, 10S, Infinite |
Signal Generator Specifications
| Characteristic | Description |
|---|---|
| Waveform Types | Sine, Square, Sawtooth, Pulse, Arbitrary (if supported) |
| Frequency Range | (Specific range not detailed in provided text, but typically up to MHz) |
| Amplitude Control | Adjustable |
| Output Impedance | 50Ω (typical) |
Multimeter Specifications
| Function | Range | Resolution | Accuracy |
|---|---|---|---|
| DC Voltage (VDC) | 2.5000V | 0.0001V | ±(0.05%+3) |
| 25.000V | 0.001V | ||
| 250.00V | 0.01V | ||
| 1000.0V | 0.1V | ||
| 25.000mV | 0.0001V | ||
| 250.00mV | 0.001V | ||
| AC Voltage (VAC) | 2.5000V | 0.0001V | ±(0.5%+3) |
| 25.000V | 0.001V | ||
| 250.00V | 0.01V | ||
| 750.0V | 0.1V | ||
| 25.000mV | 0.0001V | ||
| 250.00mV | 0.001V | ||
| DC Current (ADC) | 2.5000A | 0.0001A | ±(0.5%+3) |
| 250.00mA | 0.01mA | ||
| 25.000mA | 0.001mA | ||
| AC Current (AAC) | 2.5000A | 0.0001A | ±(0.8%+3) |
| 250.00mA | 0.01mA | ||
| 25.000mA | 0.001mA | ||
| Resistance (Ω) | 25.000Ω | 0.001Ω | ±(0.5%+3) |
| 250.00Ω | 0.01Ω | ||
| 2.5000kΩ | 0.0001kΩ | ||
| 25.000kΩ | 0.001kΩ | ||
| 250.00kΩ | 0.01kΩ | ||
| 2.5000MΩ | 0.0001MΩ | ||
| Capacitance (F) | 2.5000μF | 0.0001μF | ±(2.0%+5) |
| 25.000μF | 0.001μF | ||
| 250.00μF | 0.01μF | ||
| Frequency (Hz) | 2.5000MHz | 0.0001MHz | ±(0.5%+3) |
| 25.000MHz | 0.001MHz | ||
| 250.00MHz | 0.01MHz | ||
| 10.000GHz | 0.001GHz | ||
| Diode Test | (Range: 0-4V) | (Resolution: 0.001V) | ±(1%+3) |
| Continuity Test | (Audible beep for R < 30Ω) |
Power and Charging
The ZT-703S is powered by a built-in rechargeable battery, likely an 18650 type, offering portability. It can be charged via a standard USB Type-C port using a 5V DC power source. The device also supports data transfer over USB.
Battery Information:
- Type: Rechargeable Lithium Battery (e.g., 18650)
- Charging Port: USB Type-C (5V DC)
- Charging Indicator: The device typically indicates charging status.
Safety and Maintenance
Safety Precautions:
- Always use the correct charging cable and power adapter.
- Avoid exposing the device to extreme temperatures or moisture.
- Do not attempt to disassemble the device, as this may void the warranty and pose a safety risk.
- Ensure proper grounding when connecting to external circuits.
Maintenance:
- Keep the device clean and dry.
- Periodically check the battery and charging port for damage.
- Refer to the manufacturer's guidelines for any specific maintenance procedures.
