UNI-T UT81B 2-in-1 Handheld Digital Oscilloscope Multimeter
The UNI-T UT81B 2-in-1 Handheld Digital Oscilloscope Multimeter is a handheld instrument designed to bring waveform observation and conventional electrical measurement together in a single portable unit. Instead of carrying separate tools for basic circuit checks and signal viewing, technicians can move between digital readings and waveform display from the same instrument, making the testing process more convenient during bench work or field service.
Its oscilloscope mode is intended for examining changing electrical signals, while the digital multimeter mode supports everyday diagnostic work on electrical and electronic circuits. The instrument is designed to make movement between numerical readings and waveform observation straightforward, helping users study circuit behavior from different perspectives without depending on a full-size bench oscilloscope for every troubleshooting task, all within the same compact handheld working format.
Features:
- 2-in-1 digital oscilloscope and digital multimeter design.
- Switchable waveform and digital reading modes.
- Automatic and manual ranging in multimeter mode.
- Automatic waveform setup.
- Waveform save and recall function.
- USB interface with optical isolation.
- Data Hold function.
- Relative measurement mode.
- Automatic power-off function.
- Low-battery indication.
- Adjustable LCD backlight.
- Adjustable display contrast.
- Selectable trigger modes.
- Continuity buzzer.
- Duty-cycle measurement.
- Replaceable battery access.
- Built-in tilt stand for convenient viewing.
- Waveform storage for saved measurements and setups.
Specifications
| Parameter | Specification |
|---|---|
| Product Type: | Handheld Digital Oscilloscope Multimeter |
| Model: | UT81B |
| DMM Display: | 3999 counts / 4000-count class |
| DMM Display Update Rate: | 2–3 times/second |
| Scope Display: | 160 × 160 monochrome LCD |
| DC Voltage Range: | Up to 1000V |
| DC Voltage Basic Accuracy: | ±(0.8% + 8) |
| AC Voltage Range: | Up to 750V |
| AC Voltage Basic Accuracy: | ±(1% + 15) |
| DC Current Range: | Up to 10A |
| DC Current Basic Accuracy: | ±(1% + 8) |
| AC Current Range: | Up to 10A |
| AC Current Basic Accuracy: | ±(1.5% + 8) |
| Resistance Range: | Up to 40MΩ |
| Resistance Basic Accuracy: | ±(1% + 5) |
| Capacitance Range: | Up to 100µF |
| Capacitance Basic Accuracy: | ±(3% + 8) |
| Frequency Range: | 10Hz–10MHz |
| Frequency Basic Accuracy: | ±(0.1% + 3) |
| Duty Cycle Range: | 0.1%–99.9% |
| Oscilloscope Bandwidth: | 8MHz |
| Real-Time Sampling Rate: | 40MS/s |
| Scope Channel: | Single Channel |
| Voltage Resolution: | 8-bit |
| Coupling: | DC |
| Input Impedance: | 10MΩ, excluding multimeter section |
| Vertical Sensitivity: | 20mV/div–500V/div (1-2-5 sequence) |
| Vertical Accuracy: | ±(5% + 1 pixel) |
| Time Base Range: | 100ns/div–5s/div (1-2-5 sequence) |
| Trigger Modes: | Free Run / Normal / Single Shot |
| Scope Memory: | 10 screens and setups |
| Maximum Scope Input Voltage: | 1000Vp-p |
| USB Interface: | Yes, optically isolated |
| Multimeter Ranging: | Auto / Manual |
| Safety Compliance: | IEC 61010, CAT II 1000V / CAT III 600V, Double Insulation |
| mA Input Fuse: | F0.5AH / 250V, Ø5 × 20mm |
| 10A Input Fuse: | F10AH / 250V, Ø5 × 20mm |
| Certifications: | CE, UKCA |
| Power: | 4 × 1.5V R6 batteries or power adaptor |
| Operating Temperature: | 0°C–40°C |
| Storage Temperature: | -10°C–50°C |
| Operating Altitude: | Up to 2000m |
| Storage Altitude: | Up to 10000m |
| Dimensions: | 200 × 100 × 48mm |
| Weight: | 498g including batteries |
Applications:
- Electronics Troubleshooting.
- Electrical Circuit Testing.
- Industrial Equipment Maintenance.
- Motor and Drive Diagnostics.
- Control Circuit Diagnostics.
- UPS System Testing.
- Transducer Signal Testing.
- Electronic Repair and Servicing.
- Field Maintenance.
- Waveform Analysis.
Package Contents:
- 1x UNI-T UT81B Meter
- 1x English Operating Manual
- 1x USB Interface Cable
- 1x CD-ROM with Installation Guide & Computer Interface Software
- 1x Pair Test Leads
- 1x Alligator Clip
- 1x Power Adaptor
- 4x 1.5V R6 Batteries
- 1x Carrying Bag
