DSO138mini brings in the following improvements
Better structure and smaller size. The bulky pin-headers connecting the LCD and main board in old DSO138 has been eliminated. The soldering of these pin-headers has being found problematic for beginners.
USB or battery powered. This makes the scope much more convenient to be used as a portable device. New version analog board (PN:109-13801-00H, aka ‘H version’) can accommodate a battery charger JYE118 (see here) to make the device more practical.
External trigger input. This input can accept a TTL or LVTTL signal as trigger source.
Serial output of waveform data. This means captured data can be saved and displayed by PC. For example, this photo shows a captured single byte (0x35) sent from a serial port at 115200bps. This photo shows the same waveform displayed on PC using Gnuplot.
General controller. The main board can be used as a general purpose control board with LCD display. MCU ports were brought to board edges for easy connection to the target system.
There are a few optional parts that can be chosen to make the oscilloscope even more complete
BNC connector. The kit comes with a two-pin header for the simple hook probes (see the manual). This connector replaces the two-pin header and will allow you to connect to standard professional BNC probe.
Standard BNC probe.
Battery charger board JYE118>>>>>>>> Product ID:1337078
Interface Board with Uart-USB Converter Module CH340G, for data transfer and program update>>>>>>> Product ID:1597439
Acrylic enclosure. Please see the photo below. The instructions for enclosure assembly is here. >>>>>>>> Product ID:1337077
Major features of DSO138mini
Analog bandwidth:0 – 200KHz
Sampling rate:1Msps max
Sensitivity:10mV/Div – 5V/Div
Sensitivity error
Vertical resolution:12-bit
Timebase:10us/Div – 500s/Div
Record length:1024 points
External trigger
Built-in 1KHz/3.3V test signal
Waveform frozen (HOLD) function available
Save/recall waveform
Important Notes
The power supply is not included in the kit. User needs to prepare a USB cable with micro-USB style plug to run the scope. Any USB port with higher than 150mA current capacity can be used as power source for the scope.
It is assumed that users have adequate soldering skills and troubleshooting skills to assemble the DSO138mini kits. It is not guaranteed that you will end up with a working device. But make as much efforts as we can to approach that goal.
Product Documents and firmwares:(Click to open)
Users Manual (for ‘F’ analog board)
Users Manual (for ‘H’ analog board) [NEW]
Mainboard schematic (version H)
Mainboard schematic (version I) [NEW]
Analog board schematic (version F)
Analog board schematic (version H) [NEW]
Troubleshooting Guide
Beginners How to Test DSO138mini
DSO138mini:How to Upgrade Firmware
DSO138mini Enclosure Assembly Guide
Specifications
Number of Channel:1
Analog Bandwidth:0 – 200KHz
Sensitivity:10mV/Div – 5V/Div
Sensitivity error
Resolution:12-bit
Input Impedance:1M ohm
Maximum Input voltage:50Vpk
Coupling:DC, AC, GND
Max Real-time Sampling Rate:1Msps
Timebase:10us/Div – 500s/Div
Record Length:1024
Trigger Modes:Auto, Normal, Single
Trigger Types:Rising/falling edge
Trigger Position:1/2 of buffer size fixed
Display:2.4-inch color TFT LCD with 320 x 240 resolution
Power Supply:3.5V – 6V DC
Supply Current:120mA @5V
Dimension:85mm x 75mm x 15mm
Weight:50 gram (not including cables)
Package includes
1 x DIY Oscilloscope Kit
Additional information
| Weight | 0.083 kg |
|---|
Reviews