Seeed DS203, User Manual

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1. Introduction to DSO203 Oscilloscope
DS203 is a pocket size 4-channel digital storage oscilloscope for common electronic engineering
tasks. Its CPU is an ARM Cortex M3, STM32VCT6, with an AD9288-40 dual A/D converter
sampling at 72 MHz, and a customer FPGA to manage the ADC and data buffering. A built-in 2MB
USB disk enables you to store waveforms and to upgrade firmware. It also provides 4 application
areas, convenient for users to load and upgrade at most 4 different application firmware. Schematics
and source files are open-sourced to encourage improvements and innovations.
Major Features
This pocket-size oscilloscope DSO203 helps you test electronic devices, and measure relevant
electronic signal. Its features include:
 Full color 3” TFT LCD display, 400x240 pixels.

8 MHz ADC bandwidth
，
8-bit precision.

2 analog channels: (CH_A, CH_B) and 2 digital channels (CH_C, CH_D).

Integrated Square/Sine/Triangle/Sawtooth signal generator.

Calculation channels: [CH_A]+[CH_B], [CH_A]-[CH_B], Logic OR [CH_C]|[CH_D], Logic
AND [CH_C]&[CH_D], REC_A, REC_B, REC_C, REC_D.

Maximum sampling rate of a single analog channel, 72 MS/s.

Maximum record length of any channel, 4096 points.

Waveforms and upgrade firmware can be stored in built-in 2M USB disk.

Rechargeable battery powered by USB connection.

Comprehensive user interface through 6 buttons/switches and colored menu control system.

2 mcx 1X/10X oscilloscope probes.
Safety
To ensure your safety & avoid any damage to the device/connected products, please read the
following precautions carefully. To avoid any possible dangers, please use this product according to
the following rules.

Avoid fire and physical injury.

Use supplied USB cord for power.

Connect and disconnect properly.
Do not plug/unplug when the probe(s)/test lead(s) is
connected to the voltage sources. Before you plug/unplug current probes, disconnect power to the
circuit-under-test.

Observe all terminal ratings.
To avoid fire/electric shock, please observe ratings & symbols on
the product.
Please read the user’s manual carefully to
determine the ratings before connecting
the device.

Do not operate in humid environment.

Do not operate in inflammable/explosive environment.

Keep the surface of the product clean and dry.
Operation Conditions

Temperature
：
Operating Condition
：
0 to +50°C; Non-operating Condition
：
-20 to +60 °C.

Humidity
：
Operating Condition
：
high temperature
：
40 to 50 °C
，
0 to 60% RH; Operating
Condition
：
low temperature
：
0 to 40 °C
，
10 to 90%RH; Non-operating Condition
：
high
temperature
：
40 to 60 °C
，
5 to 60% RH; Non-operating Condition
：
low temperature
：
0 to 40
°C
，
5 to 90% RH

Electrical Ratings: Max transient voltage, ± 400 V peak; Measure voltage range, ±15 V peak;