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Highlights
◉ Multifunctional Tool: Combines oscilloscope, transistor tester, and signal generator in one upgraded device for versatile use.
◉ Smart Burnout Protection: Full-range protection ensures safe measurements across all modes.
◉ High-Performance Scope: 10MHz bandwidth, 48MSa/s sampling rate, max input 400V. One-touch AUTO for fast, accurate signal capture.
◉ Component Identification: One-click test for diodes, Zener diodes, SCRs, capacitors, resistors, inductors, transistors, MOSFETs, and more.
◉ TFT Color Display: 2.8" high-resolution TFT screen for clear waveform and data visualization.
DSO-TC4 is a multifunctional transistor oscilloscope launched by FNIRSI, which is comprehensive and practical, and is designed for the maintenance and R&D industries. It integrates an oscilloscope, a signal generator, and a transistor.
The main features of the product are:
Oscilloscope functions:
- Sampling rate: 48MSa/s
- Analog bandwidth: 10MHz
- Voltage protection: ±400V
- Waveform storage: supports screenshot saving and viewing, which is convenient for data analysis
Signal generator function:
- Supports 13 waveform outputs, frequency range 0-50KHz, output voltage adjustable 0-3v.
- Output parameters (frequency, amplitude, duty cycle) are adjustable, flexible to meet various needs
Transistor function:
- High efficiency: Automatically identify the type and pin arrangement of the tested component, simplify the operation process, and improve test efficiency
- Diverse categories: Detect and analyze the performance and characteristics of semiconductor components such as transistors, diodes, triodes, field effect (FET), etc
Portable design:
- Equipped with a 2.8-inch TFT color screen, the picture is clear and intuitive
- Built-in high-capacity rechargeable lithium battery (1500mAh), standby time 4 hours
- Small and light, suitable for mobile use.
Specifications
Main Parameters
Brand
FNIRSI
Model
DSO-TC4
Screen
2.8-inch TFT Color Screen
Backlight
Brightness Adjustable
Power Supply
TYPE-C（5V/1A）
Battery
3.7V/1500mAh
Languages
中文、English、Deutsch、Português、にほんご、Español、한국인、Pyccкий
Size
≈90x142x27.5mm
Product Weight
≈186g
Oscilloscope Parameters
Real-Time Sampling Rate
48MSa/s
Analog Bandwidth
10MHz
Input Impedance
1MΩ
Coupling Mode
AC/DC
Test Voltage Range
1:1 Probe: 80Vpp (+40V)
10:1 Probe: 800Vpp (+400V)
10:1 Probe: 800Vpp (+400V)
Vertical Sensitivity
10mV/div~10V/div (X1 range)
Vertical Displacement
Adjustable with indication
Time Base Range
50ns~20s
Trigger Mode
Auto/Normal/Single
Trigger Type
Rising edge, Falling edge
Trigger Level
Adjustable with indication
Waveform Freeze
Yes (HOLD function)
Automatic Measurement
Max, Min, Avg, RMS, Vpp, Frequency, Cycle, Duty Cycle
Component Testing
Transistor
Amplification factor "hfe"; Base-Emitter voltage "Ube", Ic/Ie, Collector-Emitter reverse leakage current "Iceo", Ices, Forward voltage drop of protection diode "Uf"
Diode
Forward voltage drop <5V (Forward voltage drop, Junction capacitance, Reverse leakage current)
Zener Diode
0.01~32V
Reverse Breakdown Voltage (K-A-A Test Area)
Reverse Breakdown Voltage (K-A-A Test Area)
Field-Effect Transistor (FET)
JFET: Gate capacitance "Cg", Drain current Id under "Vgs", Forward voltage drop of protection diode "Uf"
IGBT: Drain current Id under Vgs, Forward voltage drop of protection diode Uf
MIOSTET: Threshold voltage "Vt", Gate capacitance "Cg", Drain-Source resistance "Rds", Forward voltage drop of protection diode "Uf"
IGBT: Drain current Id under Vgs, Forward voltage drop of protection diode Uf
MIOSTET: Threshold voltage "Vt", Gate capacitance "Cg", Drain-Source resistance "Rds", Forward voltage drop of protection diode "Uf"
Unidirectional SCR
Trigger voltage <5V, Gate level (Gate voltage)
Bidirectional SCR
Trigger current <6mA (Gate voltage)
Capacitor
25pF~100mF, Capacitance value, Loss factor "Vloss"
Resistor
0.01Ω~50MΩ
Inductor
10μH~1000μH, DC resistance
DS18B20
Temperature sensor, Pins: GND, DQ, VDD
DHT11
Temperature and humidity sensor, Pins: VDD, DATA, GND
Signal Generator Parameters
Output Waveform
Supports 13 waveform outputs
Waveform Frequency
0-50KHz
Square Wave Duty Cycle
0-100%
Waveform Amplitude
0.1V-3.0V
Package List:
1. DSO-TC4 Host*1
2. P6100 High Voltage Probe *1
3. Adapter *1
4. Type-C Charging Cable *1
5. Test Hook *3
6. Alligator Clip *1
7. User Manual *1
8. Packing Box *1
1. DSO-TC4 Host*1
2. P6100 High Voltage Probe *1
3. Adapter *1
4. Type-C Charging Cable *1
5. Test Hook *3
6. Alligator Clip *1
7. User Manual *1
8. Packing Box *1
Using Environment and Precautions
The device should be stored in a soft case, and the operating environment should be at a temperature of -5~40℃, and the relative humidity should not exceed 80%.
The device should be stored in a clean and dry place to avoid moisture, mold, heavy pressure, mechanical damage,humidity and direct sunlight.
Avoid using in the rain or fog, avoid dropping or shocking.
When the screen on the LCD does not light up, it indicates that the voltage is too low, and it needs to be charged in time.
Copyrights
The product specifications are subject to change without notice, allfinal interpretation rights were reserved by FNIRSI Technology Co., Ltd, All trademarks, product images, technical parameters are properties of FNIRSI Technology Co.. Ltd. All rights reserved.
Warranty
30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from fnirsi.com), lifetime technique support by FNIRSI.
Please feel free to reach us with any concerns:
Email: service@fnirsi.com / info@fnirsi.com
We strive to reply to you within 24 hours.
FNIRSI has started researching and development manufacturer of quality optical products including Golf rangefinder, laser,measure device and binoculars since 2016.
Focus on the development,researching, and manufacturing for over 8 years.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
At Fnirsi, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from fnirsi.com. This policy aims to give you confidence and peace of mind when shopping with us.
What is the 30-Day Price Guarantee?
Our 30-day price guarantee means that if you purchase a product from fnirsi.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)
How Does the Price Guarantee Apply?
- Eligibility: The price guarantee applies only to purchases made on fnirsi.com. Products purchased from other retailers or third-party sellers are not eligible.
- Timeframe: The price drop must occur within 30 days of your original purchase date.
- Product Match: The price guarantee applies to the same product (identical model, specifications, and condition).
How to Apply for a Price Difference Refund
If you notice that the price of a product you purchased from fnirsi.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:
- Documentation: Prepare your order number and proof of the price drop (such as a screenshot and link to the product page showing the reduced price).
- Contact Us: Reach out to our customer support team at info@fnirsi.com .Include your order number, proof of the price drop, and a brief explanation of your request.
- Verification: Our team will verify the price drop and your purchase details.
- Refund Process: Once verified, we will process the refund for the price difference to your original method of payment. It typically takes 1-3 business days for you to receive the refund.
At Fnirsi, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with Fnirsi, knowing that you are always getting the best deal available.
Thank you for choosing Fnirsi. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at info@fnirsi.com.
C
O equipamento parece ser tal como descrito.
O serviço de entrega foi muito competente e rápido.
h
If you want to see some tipps and tricks like how to fix a LED panel withthis device, have look:
https://youtu.be/0FXcKlpUQnI?is=_6KIWhub7URgrabQ
T
The tool is amazing and accurate enough for low-frequency measurements. The device is ready for measurement quickly and does the job with the least interactions so it can save you time when you are working on something. I'm very happy with the device.
G
Good, but it would be very handy to have multimeter test leads with 4 mm banana plugs, especially for the voltage tests that this device can perform. The custom plugs provided by FNIRSI somehow limit usability as you cannot change the test leads.
M
Exactly as described, well wrapped fast delivery, will be very useful in the work shop or on the move. I have recently purchased several FNIRSI unit and I am very pleased with my purchases.
E
Ok
a
always a pleasure using Fnirsi equipment. Great qualiti and right price.
P
Spokojenost - rychlá dodávka
S
Great tool!
A
Once again I am not sure which of many FNIRSI devices this request covers - I have bought several recently.
I am pleased and impressed by all of them. Sorry I can’t be more device specific.
A
there is always room and it costs.
E
FNIRSI® DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
S
Master of all
A
Excellent battery tester. Easy to use. Useful functions
F
Super testeur
G
Very impressive. Works well
M
The best on its type, without doubts
S
I bought a few of the company’s products. They are very good and worth getting. So far my favorite is DMT-99 multimeter and DPOS350P oscilloscope
C
FNIRSI® DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
H
Very good product, but can't test triac (thyristors) maybe in the future with firmware change that can be fixed
J
I bought it because it has a signal generator and a scope but I use it mostly as a component tester. Transistors, Mosfets, diodes, capacitors, resistors. The only thing is it is a single channel. If you want to look at stereo you might want something with 2 channels. The oscilloscope probe is pretty good quality, the other component tester probes are pretty delicate. All in all good value. Ask me in 12 months.
H
Very good
B
Alles passt!
J
Produit ultra performant pour le packaging, conforme aux descriptions et aux attendus. Tout petit hic, le plastique sur l’écran a été enlevé, mais si c’était pour les tests finaux, rien à redire. Très content de mon achat.
P
Sono rimasto piacevolmente soddisfatto di tutti gli aquisti per qualità,funzionamento e finiture di tutti gli apparecchi,penso che prossimamente aquisterò altra strumentazione.
Complimenti per tutti i vostri prodotti,ottimo rapporto qualità prezzo
S
Each product (Scope, Transistor tester, function generator...) has every feature that you think it should have, to get the job done.
R
It is as described.
I
Outstanding!
E
Very nice designed combo which incorporates a multimeter, oscilloscope, and signal generator for a very reasonable price.
The unit is easy to work with, has a good display and is accurate when compared with a Fluke multimeter measuring DC.
I am very happy with the quality and design of this device.
P
Nice tool for my workbench, testing components, a quick to use osciloscope for basic measurements, all in a compact and nice designed unit.
Y
I can't copy the new firmware file to my TC 4 device. It says there is no free space. I even factory reset the device but it still says the same thing. What should I do?
Dear customer, you can try formatting the USB drive and then re-upgrading the firmware.
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