مشخصات
DSO138 was designed as a training oscilloscope kit. It contains only the basical oscilloscope functions with no fancy features. Simplicity in structure and easiness in assembly/operation are among the main targets of the design. For these purpose DSO138 uses mostly through-hole parts. The heart of DSO138 is a Cortex-M3 ARM processor (STM32F103C8) from ST. It uses 2.4-inch TFT LCD (320 X 240 dotmatrix, 262K colors) as its display element and displays nice and clear waveforms. Detailed assembly instructions are provided in combination with troubleshooting guide and schematc. Source codes are also available to allow user to add their own features.
Main Features:
Significantly lowered noises
Waveform can be saved to recall from non - volatile memory
Enhancement in test mode with auto short-circuit detection capability
Supports two types of TFT controllers (ILI9341 and ILI9325 / 9328)
Coupling modes: DC / AC / GND
1Hz / 3.3V square wave test signal source
Specifications:
Vertical
Number of Channel: 1
Analog Bandwidth: 0 - 200KHz
Sensitivity: 10mV/Div - 5V/Div
Sensitivity error: < 5%
Resolution: 12-bit
Input Impedance: 1M ohm
Maximum Input voltage: 50Vpk
Coupling: DC, AC, GND
Horizontal
Max Real-time Sampling Rate: 1Msps
Timebase: 10us/Div - 500s/Div
Record Length: 1024
Trigger
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
9V DC (8 - 12V acceptable)
Supply Current: 120mA
Physical
Dimension: 117mm X 76mm X 15mm
Weight: 70 gram (not including cables)