1. Introduction and Overview
The SK201B+ is a versatile 2-in-1 intelligent graphical digital oscilloscope and multimeter designed for DIY enthusiasts, electronic testing, and professional applications. It features a 2.4-inch color screen, 1MHz bandwidth, and a 2.5Msps sampling rate, providing accurate and fast signal capture. This manual provides essential information for the safe and effective operation of your device.
Figure 1.1: Front view of the SK201B+ Intelligent Graphical Digital Oscilloscope Multimeter.
2. Package Contents
Upon opening the package, please verify that all items listed below are present and in good condition. If any items are missing or damaged, please contact customer support.
- SK201B+ Digital Oscilloscope Multimeter
- Test Leads (1 Pair)
- Storage Pouch
- User Manual
- 3 x AA Batteries
Figure 2.1: Illustration of the SK201B+ and its included accessories: storage pouch, test leads, user manual, and AA batteries.
3. Features
The SK201B+ is equipped with a range of features to enhance your measurement capabilities:
- High-Speed Sampling & Wide Bandwidth: Features 2.5Msps high-speed sampling and 1MHz analog bandwidth (ACV mode only) for accurate and fast signal capture.
- Multiple Waveform Scanning Modes: Easily switch between automatic, normal, and single waveform scanning modes to meet various measurement needs.
- Data Storage & Waveform Hold: Stores up to 100 sets of measurement data and 10 waveforms, with real-time waveform hold for later analysis.
- Customizable Parameters & Relative Value Measurement: Adjust time base, amplitude, and scanning mode during waveform measurement; relative value measurement eliminates lead resistance, parasitic capacitance, or interference.
- Dual Protection & High Reliability: Measures DC/AC voltage, current, resistance, capacitance, frequency, duty cycle, and diode/continuity testing, with dual overload protection (500mA and 10A fuse) to ensure safety.
Figure 3.1: The SK201B+ functions as both an oscilloscope for waveform display and a digital multimeter for precise numerical measurements.
Figure 3.2: The device offers extensive data and waveform storage capabilities, allowing for review of up to 100 data sets and 10 waveform records.
4. Setup
4.1 Battery Installation
The SK201B+ requires 3 AA batteries (included). To install or replace batteries:
- Locate the battery compartment on the back of the device.
- Open the battery cover.
- Insert the 3 AA batteries, ensuring correct polarity (+/-).
- Close the battery cover securely.
4.2 Connecting Test Leads
Connect the red and black test leads to the appropriate input jacks on the multimeter. The common (COM) jack is for the black lead, and the red lead connects to the jack corresponding to the desired measurement function (e.g., VΩCap for voltage, resistance, capacitance, or 10A for high current).
5. Operating Instructions
The SK201B+ features a rotary function selector and four function keys (F1-F4) for intuitive operation.
5.1 Power On/Off
Rotate the function selector from the "OFF" position to any desired measurement function to power on the device. Rotate back to "OFF" to power off.
5.2 Multimeter Functions
Select the desired measurement function using the rotary dial. The screen will display the corresponding measurement mode.
- Voltage (DC/AC): Up to 1000V DC and 750V AC.
- Current (DC/AC): Up to 10A.
- Resistance: Up to 40.00MΩ.
- Capacitance: Up to 10mF.
- Frequency: 5Hz - 5MHz.
- Duty Cycle: 0.1% - 99.9%.
- Diode Test: Voltage is about 1.5V.
- Continuity Test: Resistance less than 50Ω will trigger a beep.
Figure 5.1: The REL function improves measurement accuracy by eliminating lead resistance and distributed capacitance. MAX/MIN modes assist in data analysis.
5.3 Oscilloscope Functions
When in oscilloscope mode, the screen displays waveforms. Use the function keys (F1-F4) to adjust parameters such as time base, amplitude, and scanning mode (Auto, Normal, Single).
Figure 5.2: The 1MHz bandwidth and real-time auto trigger ensure clear and stable waveform displays.
5.4 Data Storage and Recall
The device can store up to 100 sets of measurement data and 10 waveform records. Refer to the user manual for detailed instructions on saving and recalling data.
Figure 5.3: Real-time readings auto-refresh continuously, with an option to freeze data for easy review.
5.5 Official Product Video
Watch the official product introduction video for a visual guide on the SK201B+ features and operation.
Video 5.1: An official product introduction video demonstrating the SK201B+ oscilloscope multimeter's features and various measurement capabilities, including waveform display and numerical readings.
6. Maintenance
6.1 Cleaning
To clean the device, use a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the device is powered off before cleaning.
6.2 Battery Replacement
Replace batteries when the low battery indicator appears on the screen. Follow the instructions in Section 4.1 for battery installation.
6.3 Fuse Replacement
The SK201B+ features dual overload protection with 500mA and 10A fuses. If the device stops functioning due to an overload, the fuse may need replacement. Refer to the full user manual for detailed instructions on fuse type and replacement procedures. Always ensure the device is powered off and disconnected from any power source before attempting fuse replacement.
7. Troubleshooting
If you encounter issues with your SK201B+, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Dead or incorrectly installed batteries. | Check battery polarity and replace batteries if necessary. |
| No reading or "OL" displayed. | Open circuit, out of range, or blown fuse. | Check test lead connections. Ensure measurement is within range. Check and replace fuse if needed. |
| Inaccurate readings. | Poor lead contact, external interference, or incorrect mode selection. | Ensure firm contact with test points. Minimize external interference. Verify correct function mode is selected. Consider using REL mode. |
| Waveform not stable. | Incorrect trigger settings. | Adjust trigger level or mode (Auto, Normal, Single) in oscilloscope settings. |
For further assistance, please refer to the comprehensive user manual or contact SKYCENX customer support.
8. Specifications
Detailed technical specifications for the SK201B+:
| Parameter | Value |
|---|---|
| Display | 320x240, White backlight |
| Max Real-time Sampling Rate | 2.5Msps |
| Bandwidth | ACV / 1MHz |
| DC Voltage Range | 400mV - 1000V |
| AC Voltage Range | 400mV - 750V |
| DC Current Range | 40mA - 10A |
| AC Current Range | 40mA - 10A |
| Resistance Range | 400.0Ω - 40.00MΩ |
| Capacitance Range | 51.2nF - 100uF, 10mF |
| Frequency Range | 5Hz - 5MHz |
| Duty Cycle | 0.1% - 99.9% |
| Diode Test Voltage | About 1.5V |
| Continuity Test | Resistance < 50Ω, beep |
| Data Storage | 100 Data sets / 10 Waveforms |
| Power Source | 3 AA batteries (included) |
| Operating Temperature | 0°C ~ 40°C; <75% RH |
| Storage Temperature | -10°C ~ 60°C; <90% RH |
| Dimensions | 83 x 160 x 32 mm (3.27 x 6.30 x 1.26 inches) |
| Weight | About 180g (6.35 oz) |
| Item Model Number | SK201B+ |
| Manufacturer | E-ONE Science and Technology |
Figure 8.1: Key product information and specifications as displayed on the device screen.
Figure 8.2: The compact and lightweight design of the SK201B+ makes it highly portable.
9. Warranty and Support
The SK201B+ comes with a standard return policy of 30 days. For specific warranty details, technical support, or service inquiries, please contact SKYCENX customer support directly. You may find contact information on the product packaging or the official SKYCENX website.
Additional protection plans may be available for purchase. Please refer to your retailer for more information on extended coverage options.