Select Regional Settings

Feature:

* Pocket size and light weight
* Two 72Mhz analog channels and two digital channels
* Signal Generator
* Auto Measurement
* Various Triggering Option
* Easy waveform storage
* Firmware upgrade
* User application

Specification

Analog channel * 2 [CH_A] [CH_B]
Digital channel * 2 [CH_C] [CH_D]
Vertical Scale 20mV-10V/div (1-2-5 step) on x1 probe / 200mV -100V/div (1-2-5 step) on x10 probe
Vertical resolution 8 bit
Input coupling AC/DC
Max input voltage 80Vpp (x1 probe) / 400Vpp (x10 probe)
Storage 4K per channel / 8K on single channel
Software trigger type edge, pulse, level (to be added)
Hardware trigger type edge
Trigger source CH1/CH2/EXT
Trigger mode Auto, Normal, Single, SCAN, None
Test Signal generator 0Hz to 8Mhz 2.8Vpp Square Wave, duty circle 10~90% adjustable / 10Hz to 20Khz 2.8Vpp Sin, Square, Saw, Triangle wave
Storage: internal 2MB USB disk, BMP, DAT file
Auto measure Vmax, Vmin, Vpp, Vavr, Vrms, Freq, Period, Pulse, Duty
Cursor measurement Level, Voltage
Display mode CH1, CH2, EXT, CH1+CH2, CH1-CH2, CH1*CH2
Sampling mode real time
Sampling rate 30S/s – 72MS/s
Power Lipo battery
Dimension 98 * 60 * 14.5 (mm)
Weight 80g (without battery)
Accesories within Pack 2 mcx osilloscope probe, 2 mcx digital probe

... That seems to be the specs of the DSO Quad? Which cost slightly more. While I agree it looks extremely similar on the outside (almost identical price), are you sure they are 100% compatible on the inside?

Because the DSO can be firmware upgraded. Afaik they significantly boosted the specs by an optimizing firmware upgrade.

My point is; I would value the ability to do firmware upgrades much more than saving some money.

According to a lot of research I did, DSO Quad, DS-203 and DSO203 are all the same hardware ... the manufacturer only sell one product of this type. The names variation depends on the seller... maybe the name is related to the software version.

Since DX sells it at the lowest price I have found, I bough one ... It is upgradable using DSO QUAD system ver.1.50 and APP ver.2.50, so I gues there really is no difference between the brands.

A questions to subject owners:
do they (developers) solved measure range problem? As stated here: http://www.seeedstudio.com/wiki/index.php?title=DSO_Quad

Measurement voltage from 0.2~10V. - Pending for a opt-coupler. So, settings less than 0.2V/Div are not accessable? Or did they fix it? What are real V ranges for this device?

What is the sampling rate for digital(binary) inputs ? (B+C?)
Analog inputs (A+B) have 72MS/s each or together?
And what is comparator level for binary?