DSO Quad Clone

Here's another interesting one from the DealExtreme shop in HK:


DS-203 3.0" LCD Pocket Mini Oscilloscope

They're selling it for $174 shipped, or about $25 cheaper the the original. I don't see any reviews yet, but it should be interesting to see how this one works out as well.

DSO Quad

I want one! Need to save up for it... [@seeedstudio.com]

Feature: 

• Pocket size and light weight
• Two 72MS/s analog channels, plus two digital channels
• Signal Generator 
• Auto Measurement
• Various Triggering Option
• Easy waveform storage
• Firmware upgrade
• User applications
• Open source 

Specifications

• Analog channel * 2 : [CH_A]  [CH_B];
• Digital channel * 2 :   [CH_C]  [CH_D];
• Vertical Scale: 20mV-10V/div (x1 probe);
• Vertical solution: 8 bit ;
• Input coupling: AC/DC ; 
• Max input voltage: 80Vpp (x1 probe);
• Storage: 4K per channel
• Software trigger type: edge, pulse, level (to be added)
• Hardware trigger type: edge
• Trigger source: CH1/CH2/EXT
• Test Signal generater: 10Hz to 1Mhz 
• Storage: internal 2MB USB disk
• 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: 1kSa/s - 72MSa/S
• Power: Lipo battery
• Dimension: 98 * 60 * 14.5
• Weight: 80g (without battery)
• Accesories within Pack: 2 mueller mcx osilloscope probe, 2 digital probe, 

Shiny Nano v2

Oooh... A new DSO Nano from SeedStudio.



Muuuust resist...

Owon Oscilloscope Battery

I wanted a battery pack for an Owon PDS5022S oscilloscope, but didn't want to pay the $70~80 (yikes!) for the one that Owon sells.

Some poking around shows that the scope consumes around 1Ah, charges at around 8.5v 300mA when on AC power and turned on. The original batteries are rated 7.4v 8Ah. It looks like an ordinary 2S lipo can be used, so I gave it a try...

DSO Nano Clone

I just saw these at DealExtreme:



They appear to have an mmcx connector instead of the 3.5mm that SeeedStudio uses. I wonder what else is different inside?

They're selling the probe/battery-less version for only $55 USD shipped. The full version is 70 USD or 72 USD (not sure exactly what's the difference). The prices are definitely tempting.

I'm thinking of getting the cheap probe/battery-less version, but I wonder how easy would it be to find or make those mmcx probe though... It's the first time I've seen one of those.

DSO Nano Surgery

My DSO Nano came with a crooked 3.5mm socket. It worked, but there was quite a bit of friction from the plug rubbing on the case.



I wasn't too sure about opening up a new Nano, but the problem was annoying enough, and in the long run, it probably wasn't good for the socket or the PCB, so I disassembled and attempted to fix it...

Cheap probe for DSO Nano

DealExtreme 100MHz probe ($6.04 shipped) + SeedStudio BNC adapter ($1.50 + sh) = ~$7.54.

Also made a breadboard-pluggable one. Plug connection: Tip of plug is positive, everything else is negative.

DSO Nano Stand

Here's my DSO Nano stand... You only need a few thousand dollars in debt... ;)



If it's not so obvious, it's a folded-up old credit card (rebate CC actually).

DSO Nano Tour

My DSO Nano...

The Nano is an $89 open-source (hardware & software) portable 1MHz oscilloscope from SeeedStudio.