Products > Test Equipment
SainSmart DDS120 & DDS140 USB Oscilloscope
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DAIRVINE:
An example use is testing universal infra red. The maximum IR frequency is about 1.125MHz, the length can be several seconds. It should be within the capability of a DDS120 to capture a complete transmission, or even several transmissions.
Several transmissions are useful because of rolling code sequences up to a sequence of 16 codes (An obsolete telephone).

I actually used a picoscope for this, combined with an analog Tek scope.
rvendrame:

--- Quote from: mmark on January 31, 2015, 11:08:15 pm ---R61 seems to be 0 Ohm: https://dl.dropboxusercontent.com/u/5641160/DDS120_Top_20141023_0146p.jpg (posted somewhere before)

--- End quote ---

Still trying to bring it back to life... Replacing R61 by a jumper didn't fix it (anyway thx a lot @mmark!).  The voltage regulator next to it, AMS1117  3.3V is reading 2.1V at its v-out.  Can this be the problem?  Just want to check before replacing it...


doctormord:
May you check the current drawn from USB?
bobi_dunkel:

--- Quote from: DAIRVINE on February 04, 2015, 09:16:08 am ---USBEE AX clones are available, DDS120 is just a variant of this, they are all variants of the Cypress dev boards.

--- End quote ---

Is Picoscope also variant of Cypress FX2 board ?
bobi_dunkel:

--- Quote from: bobi_dunkel on February 19, 2015, 12:39:34 am ---
--- Quote from: DAIRVINE on February 04, 2015, 09:16:08 am ---USBEE AX clones are available, DDS120 is just a variant of this, they are all variants of the Cypress dev boards.

--- End quote ---

Is Picoscope also variant of Cypress FX2 board ?

--- End quote ---

Yes some models are: http://sigrok.org/wiki/Oscilloscope_comparison
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