Twintex Dual Channel Made In China 30MHz Cathode Ray Oscilloscope


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Product Overview

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Product overview


Product Description
This DSO138 digital oscilloscope kit adopts ARM Cortex-M3 processor and with 2.4-inch TFT screen. It's easy and reliable for circuit operation. It can display frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.

Features
Oriented for electronic production practical training, the description information is complete and detailed, including circuit diagrams, production instructions, instructions for use, troubleshooting methods, etc., with high production success rate.
A variety of components, suitable for students to identify components, direct component welding, SMD component welding training.
Students can get a practical tool while making, which can effectively observe and measure the signal waveform on many occasions such as audio, video synchronization, low-frequency switching power supply, infrared receiving and transmitting, etc., increasing the learning interest and improving the learning effect.
The kit uses an ARM Cortex-M3 processor (STM32F103C8) and includes a 2.4" color TFT display, which can be used as an ARM development test board.
The circuit is simple and reliable at a low price.


1. Can be secondary development on the basis of this kit, for example, it can be changed to Millivoltmeter, data logger.
2. Adjustable vertical displacement, and with instructions.
3. With automatic, regular and one-shot modes, easy to capture the moment waveform.
4. Available rising or falling edge trigger.
5. Observable previous trigger waveform (negative delay).
6. Can freeze at any time waveform display (HOLD function).
7. Comes 1Hz /3.3V square wave test signal source.
8. With waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.
9. Waveform storage function: will not lose the waveform after power off.
10. Short-circuit and open-circuit detection: this can help the user find out the soldering error.
11. Save/call out the waveform, and the waveform does not disappear when the power is turned off
To turn on/off the waveform parameter display: place the cursor in the time base position and long press the [OK] key.

Method to save waveform: Press [SEL] and [+] keys at the same time.
To call out the saved waveform: press [SEL] and [-] at the same time.

To enter the test mode:
Press [RESET] key after holding down [OK]. If you see the LED flashing rapidly, it means that there is a short circuit in the PB or PC ports of the MCU (these ports contain the connection line with the LCD), which needs to be removed after finding out; if you see the LED flashing with a cycle of about 4 seconds, you can use a voltmeter to find the possible open circuit in the connection line related to the MCU port, please refer to the manual for the specific method.


Package




Key Parameters


Maximum Real-time Sampling Rate
1Msps
JETSON-NANO-DEV-KIT
Accuracy
12Bit
Sampling Buffer Depth
1024 bytes 
Analog Bandwidth
0-200KHz
Vertical Sensitivity
10mV / Div - 5V / Div (1-2-5 progressive manner)
Input Impedance
1MΩ
Maximum Input Voltage
50Vpp (1: 1 probe), 400Vpp (10: 1 probe)
Coupling Modes
DC / AC / GND
The Horizontal Time Base Range
10μs / Div - 50s / Div (1-2-5 progressive manner)
Supply Voltage
DC 9V
PCB Size
117 * 76mm / 4.6 * 3in
Screen Size
 52 * 40mm / 2 * 1.57in
Package Size
18 * 12.5 * 3cm / 7.08 * 4.92 * 1.18in
Package Weight
119g / 4.21oz


Application






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Packing&Shipping


About packing:
1.We offer standard packing by default.
2.We offer Anti-static packaging bags which can protect the product well.
3.If you need to customized package,it is also acceptable,please just contact with me for customization.

About shipping
1.We offer DHL/UPS/FedEx etc. fast shipping for you ,so you can get your products as soon as possible.
2. If you have other available shipping method,it is also negotiable if it is safe to ship.
3.Any other available shipping method can be chosen, please just feel free to contact with us for further information.




FAQ


1. who are we?
We are located in Guangdong, China, we have rich experience for 6 years in Electronic Components ,allowing us offer you a reasonable price with qualified products,and offering you professional advice at the same time.We can accept a minimum order for 1 piece as a sample,and can customize your logo or code or as your requirements for a larger order.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
Always a test before shipment;
3. what can you buy from us?
Integrated circuit
Electronic components
Modules
IC
Smart home devices
(Catalog available)
4. why should you buy from us not from other suppliers?
Reasonable factory price
Low minimum order quantity 
Large order experience
Better after sales service
5. what services can we provide?
a. 7*24h online service
b. Customization Service
c. Accepted Payment Type: T/T,PayPal;Alipay
d. Most suitable fast shipping method or your own delivery agent


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