1. Introduction
The Hantek DSO4004B series, including models DSO4084B and DSO4084C, are 4-channel digital storage oscilloscopes designed for a wide range of electrical measurement and testing applications. Featuring an 80MHz bandwidth and a 1GSa/s sample rate, these devices offer advanced digital trigger systems, high trigger sensitivity, and low trigger jitter. The oscilloscopes are equipped with a high-resolution 7-inch 64K color TFT display (800*480 pixels) for clear waveform visualization.
Key features include:
- 4-channel oscilloscope with EXT, DVM, and auto-range functions.
- 80-250MHz bandwidth, with a minimum measurement range of 500μV/div.
- Over 32 types of automatic measurement functions.
- More than 14 types of trigger functions, including edge, overtime, pulse, pattern, and interval.
- Integrated USB Host/Device for PC communication and U-stick storage/system updates.
- Support for SCPI remote control commands.
- Optional RS232, LAN, HDMI ports, touch screen, Wi-Fi communication, and SD card storage.
- Stable, reliable, sturdy, and durable construction.
2. Package Contents
Upon unpacking your Hantek DSO4084B/DSO4084C Digital Storage Oscilloscope, please verify that all items listed below are present and in good condition.
- Hantek DSO4084B/DSO4084C Digital Storage Oscilloscope Unit
- Oscilloscope Probes (Quantity: 4)
- USB Cable (for PC communication)
- Power Cord
- User Manual (Printed)
- Software CD
- Calibration Certificate
3. Setup
3.1 Initial Inspection
Before powering on the device, inspect the oscilloscope for any signs of physical damage that may have occurred during transit. Ensure all connectors are clean and free from debris.
3.2 Power Connection
- Connect the provided power cord to the AC input on the rear panel of the oscilloscope.
- Plug the other end of the power cord into a suitable AC power outlet (100-240VAC RMS, 45-440Hz).
3.3 Connecting Probes
Connect the oscilloscope probes to the BNC input connectors on the front panel. Ensure a secure connection by twisting the probe connector clockwise until it locks into place. For accurate measurements, it is recommended to calibrate the probes before first use (refer to Section 5.2).
3.4 Language Setting
Upon initial power-on, you may need to select your preferred language. Navigate through the Utility menu to find the Language settings. The device supports multiple languages, including English.
4. Operating Instructions
4.1 Front Panel Overview
The front panel of the DSO4084B/DSO4084C is organized into several functional areas:
- Display Area: 7-inch 64K color TFT screen (800x480 pixels) for waveform display and menu navigation.
- Vertical Controls: Adjust voltage per division (VOLTS/DIV), position, and enable/disable channels (1, 2, 3, 4).
- Horizontal Controls: Adjust time per division (SEC/DIV) and horizontal position.
- Trigger Controls: Set trigger level, mode (Auto, Normal, Single), and type (Edge, Pulse, Video, Slope, Overtime, etc.).
- Function Buttons (F1-F5): Context-sensitive buttons for menu navigation and quick access to features.
- Utility Buttons: Access menus for Default settings, Help, Cursors, Measurements, Wave Gen, Save/Recall, Display, System Info, and System Set.
- USB Ports: Front panel USB Host/Device ports for data transfer and storage.
4.2 Basic Waveform Acquisition
- Power On: Press the power button.
- Connect Signal: Connect your signal source to one of the BNC input channels using a probe.
- Auto Scale: Press the Auto Scale button. The oscilloscope will automatically adjust vertical and horizontal settings to display a stable waveform.
- Adjust Settings: Fine-tune the VOLTS/DIV and SEC/DIV knobs for optimal waveform viewing. Use the Position knobs to shift the waveform vertically or horizontally.
4.3 Trigger Functions
The oscilloscope offers a comprehensive digital trigger system to stabilize repetitive waveforms and capture single-shot events. Over 14 types of trigger functions are available.
- Edge Trigger: Triggers on the rising or falling edge of a signal.
- Pulse Trigger: Triggers on pulses of a specified width.
- Video Trigger: Triggers on standard video signals (NTSC, PAL).
- Slope Trigger: Triggers on a signal with a specific rise or fall time.
- Overtime Trigger: Triggers when a signal remains high or low for a specified duration.
- Pattern Trigger: Triggers when a specific logic pattern occurs across multiple channels.
- Interval Trigger: Triggers based on the time interval between two events.
- Serial Bus Triggers: Includes LIN, CAN, SPI, and IIC triggers for debugging serial communications.
4.4 Measurement Functions
The DSO4084B/C provides over 32 types of automatic measurements, accessible via the Meas button. These include:
- Voltage Measurements: Peak-to-Peak (Pk-Pk), Max, Min, Amplitude, Mean, RMS, Vtop, Vbase, Overshoot, Preshoot.
- Time Measurements: Period, Frequency, Rise Time, Fall Time, Positive Width, Negative Width, Duty Cycle.
- Delay Measurements: Phase, Delay.
4.5 USB Connectivity
The integrated USB Host/Device ports allow for convenient communication with a PC and storage to a USB flash drive. You can save waveforms, screenshots, and settings to a USB drive or update the system firmware.
4.6 Remote Control
The oscilloscope supports Standard Commands for Programmable Instruments (SCPI) for remote control. This allows for automated testing and integration into larger test systems. Optional RS232 and LAN ports may be available on some models for enhanced connectivity.
5. Maintenance
5.1 Cleaning
To maintain the performance and appearance of your oscilloscope:
- Wipe the exterior surfaces with a soft, damp cloth.
- Do not use abrasive cleaners or solvents that could damage the plastic or screen.
- Ensure the device is powered off and unplugged before cleaning.
- Keep ventilation openings clear of dust and debris.
5.2 Probe Calibration
Regular probe calibration ensures accurate measurements. Connect the probe to the probe compensation output (typically a square wave signal) and adjust the probe's compensation trimmer until a flat-top square wave is displayed on the screen.
5.3 Firmware Updates
Periodically check the Hantek official website for firmware updates. Updates can improve performance, add features, or fix bugs. Firmware updates can typically be performed via the USB Host port using a USB flash drive.
5.4 Safety Warnings
WARNING: Hazardous voltage inside. Do not remove the cover unless by specified personnel. Refer to the rear panel warning label for details.
6. Troubleshooting
This section provides solutions to common issues you might encounter with your oscilloscope.
| Problem | Possible Cause | Solution |
|---|---|---|
| No display after power on | Power cord not connected, power switch off, internal fault. | Check power cord connection. Ensure power switch is ON. If problem persists, contact support. |
| No waveform displayed | Probe not connected, signal too small/large, trigger not set correctly, channel off. | Check probe connection. Press Auto Scale. Adjust VOLTS/DIV and SEC/DIV. Check trigger settings. Ensure channel is enabled. |
| Unstable waveform | Trigger level incorrect, trigger mode unsuitable. | Adjust trigger level. Try different trigger modes (e.g., Edge, Auto). |
| Incorrect measurements | Probe compensation incorrect, probe attenuation setting wrong. | Calibrate probes (Section 5.2). Ensure probe attenuation setting on oscilloscope matches physical probe (e.g., 1X, 10X). |
| USB storage not working | USB drive incompatible, drive full, drive not formatted correctly. | Try a different USB drive. Ensure drive is formatted to FAT32. Check available space. |
7. Specifications
The following tables detail the technical specifications for the Hantek DSO4084B/DSO4084C Digital Storage Oscilloscope.
7.1 General Specifications
| Parameter | Specification |
|---|---|
| Model Number | DSO4084B, DSO4084C |
| Bandwidth | 80MHz (DSO4084B/C) |
| Digital Channels | 4 |
| Real Time Sampling Rate | 1GSa/S |
| Max Waveform Capture Rate | 30,000wfm/s |
| Record Length | Max 64K samples per single-channel; Max 32K samples per dual-channel (4K, 32K optional) |
| Display Size | 7 Inches & Above |
| Display Resolution | 800*480 Pixels |
| Display Type | 7 inch 64K color TFT (diagonal liquid crystal) |
| DIY Supplies | Electrical |
| Certification | CE |
| Origin | Mainland China |
| Battery Included | Yes |
| IS Battery Demountable | No |
| High-concerned chemical | None |
7.2 Input and Vertical System
| Parameter | Specification |
|---|---|
| Input Coupling | DC, AC or GND |
| Input Impedance | 20pF ± 3 pF, 1MΩ ± 2% |
| Probe Attenuation | 1X, 10X |
| Supported Probe Attenuation Factors | 1X, 10X, 100X, 1000X |
| Overvoltage Category | 300V CAT II |
| Maximum Input Voltage | 300VRMS (10X) |
| AD Converter | 8-bit resolution, each channel sampled simultaneously |
| VOLTS/DIV Range | 500μV/div to 10V/div at input BNC |
| DC Gain Accuracy | ±3% for Normal or Average acquisition mode, 10V/div to 10mV/div ±4% for Normal or Average acquisition mode, 5mV/div to 500μV/div Note: Bandwidth reduced to 6MHz when using a 1X probe. |
| Rise Time at BNC, typical | ≤4.4ns |
7.3 Horizontal System
| Parameter | Specification |
|---|---|
| Sample Rate Range | 1GS/s |
| Waveform Interpolation | (sin x)/x |
| SEC/DIV Range | 2ns/div~100s/div (1, 2, 5 sequence) |
| Sample Rate and Delay Time Accuracy | ±50ppm |
| Delta Time Measurement Accuracy (Full Bandwidth) | Single-shot, Normal mode: ± (1 sample interval + 100ppm × reading + 0.6ns) >16 averages: ± (1 sample interval + 100ppm × reading + 0.4ns) Sample interval = s/div ÷ 200 |
7.4 Acquisition
| Parameter | Specification |
|---|---|
| Acquisition Modes | Normal, Peak Detect, Average and HR |
| Acquisition Rate, typical | Up to 2000 waveforms per second per channel (Normal acquisition mode, no measurement) |
| Single Sequence | Acquisition Mode: Normal, Peak Detect Acquisition Stop Time: Upon single acquisition on all channels simultaneously |
| Average | After N acquisitions on all channels simultaneously, N can be set to 4, 8, 16, 32, 64 or 128 |
7.5 Environmental and Mechanical
| Parameter | Specification |
|---|---|
| Operating Temperature | 0~50 °C (32~122 °F) |
| Storage Temperature | -40~+71 °C (-40~159.8 °F) |
| Humidity | ≤+104°F (≤+40°C): ≤90% relative humidity 106°F~122°F (+41°C~50°C): ≤60% relative humidity |
| Cooling Method | Convection |
| Altitude | Operating and Nonoperating: 3,000m (10,000 feet) |
| Random Vibration | Operating: 0.31gRMS from 50Hz to 500Hz, 10 minutes on each axis Nonoperating: 2.46gRMS from 5Hz to 500Hz, 10 minutes on each axis |
| Mechanical Shock | Operating: 50g, 11ms, half sine |
| Dimension (L x W x H) | 318 x 110 x 150mm |
| Weight | 2900g |
| Power Supply | 100-120VACRMS(±10%), 45Hz to 440Hz, CATII 120-240VACRMS(±10%), 45Hz to 66Hz, CATII |
| Power Consumption | <30W |
| Fuse | T, 3.15A, 250V, 5x20mm |
8. Warranty and Support
For warranty information, technical support, and service inquiries, please refer to the documentation included with your product or visit the official Hantek website. Keep your purchase receipt as proof of purchase for warranty claims.
9. User Tips
No specific user tips were available from customer reviews or Q&A for this product at this time. For general oscilloscope usage tips, consider:
- Always use the correct probe attenuation setting (1X, 10X) on both the probe and the oscilloscope to ensure accurate voltage readings.
- When measuring high-frequency signals, keep probe leads as short as possible to minimize inductance and capacitance effects.
- Utilize the 'Auto Scale' function for a quick initial setup, then fine-tune settings manually for precise analysis.
- Regularly save important waveform data or screen captures to a USB drive for documentation and later analysis.
