Product Description
Test and troubleshoot electronic circuits with the FNIRSI DSO-TC4, a portable 3-in-1 instrument combining an oscilloscope, signal generator, and component tester. The detailed product information lists a 10 MHz analog bandwidth, 48 MSa/s real-time sampling, a 2.8-inch color screen, and a built-in rechargeable battery.
Three Test Functions
- Oscilloscope: View and measure waveforms with one digital channel.
- Signal generator: Output 13 listed waveform types with adjustable frequency, amplitude, and duty cycle.
- Component tester: Test or identify listed transistors, diodes, Zener diodes, FETs, SCRs, capacitors, resistors, inductors, DS18B20 sensors, and DHT11 sensors.
Oscilloscope Specifications
- Model: DSO-TC4
- Digital channels: 1
- Real-time sampling rate: 48 MSa/s
- Analog bandwidth: 10 MHz
- Input impedance: 1 MΩ
- Coupling: AC/DC
- Vertical sensitivity: 10 mV/div to 10 V/div in the listed X1 range
- Time base: 50 ns to 20 s
- Trigger modes: Auto, normal, and single
- Trigger types: Rising edge and falling edge
- Waveform hold or freeze: Yes
- Automatic measurements: Max, min, average, RMS, Vpp, frequency, cycle, and duty cycle
- Waveform screenshot saving and viewing listed
Signal Generator Specifications
- 13 waveform outputs listed
- Frequency range: 0-50 kHz
- Amplitude: 0.1-3.0V
- Square-wave duty cycle: 0-100%
- Frequency, amplitude, and duty cycle are adjustable according to the source
Component Testing
- Transistor test
- Diode forward-voltage test: less than 5V listed
- Zener diode test: 0.01-4.5V
- FET test: JFET, IGBT, and MOSFET listed
- Unidirectional SCR trigger voltage: less than 5V listed
- Bidirectional SCR trigger current: less than 6 mA listed
- Capacitance: 25 pF-1000 μF
- Resistance: 0.01 Ω-50 MΩ
- Inductance: 10 μH-1000 μH
- DS18B20 and DHT11 sensor tests listed
Portable Design
- Screen: 2.8-inch TFT color screen
- Adjustable screen backlight
- Battery: 3.7V, 1500mAh rechargeable lithium battery
- Battery: Included and listed as non-removable
- Charging or power input: USB Type-C, 5V/1A
- Approximate size: 90 x 142 x 27.5 mm
- Approximate product weight: 186 g
- Languages listed: Chinese, English, German, Portuguese, Japanese, Spanish, Korean, and Russian
Package Contents
- 1 DSO-TC4 host
- 3 test hooks
- 1 P6100 probe
- 1 alligator-clip probe
- 1 USB Type-C cable
- 1 user manual
- 1 package box
Specification Conflict Note
The source also contains generic or conflicting headline fields, including under-60 MHz bandwidth, 1 GSa/s sampling, 30,000 waveform captures per second, a 640 x 480 display entry, and a 4K record-length entry. Those values do not match the detailed DSO-TC4 specifications above. Confirm the exact datasheet or firmware version before relying on any conflicting headline value for a technical application.
Electrical Safety
- Use the correct probe attenuation setting for the measurement.
- The source lists 80 Vpp (+40V) with a 1:1 probe and 800 Vpp (+400V) with a 10:1 probe. These are source-listed test-voltage limits, not a recommendation to measure mains or high-energy circuits.
- Do not connect the instrument to mains, high-energy, or unknown circuits unless the probe, instrument, grounding, and measurement category are confirmed suitable.
- Disconnect power before connecting or removing component-test leads.
- Use the manual and applicable electrical-safety procedures for the circuit under test.
- Do not exceed the confirmed limits of the instrument, probe, or test leads.
Frequently Asked Questions
What does 3-in-1 mean?
The DSO-TC4 combines an oscilloscope, signal generator, and component tester.
What is the detailed oscilloscope bandwidth?
The detailed DSO-TC4 information lists 10 MHz analog bandwidth and 48 MSa/s real-time sampling. The source also contains conflicting generic values, so confirm the exact datasheet before purchase for critical measurements.
Does it have a built-in battery?
Yes. A non-removable 3.7V/1500mAh rechargeable lithium battery is listed, with USB Type-C 5V/1A power input.
Can it generate signals?
Yes. The source lists 13 waveform outputs, a 0-50 kHz frequency range, 0.1-3.0V amplitude, and adjustable square-wave duty cycle.
What probes are included?
The package list includes three test hooks, one P6100 probe, one alligator-clip probe, and one USB Type-C cable.
Can it measure mains electricity?
Do not assume that it can. Confirm the instrument and probe safety ratings for the specific circuit, and follow the manual and applicable electrical-safety procedures before making any high-voltage measurement.