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SainSmart DDS120

SainSmart DDS120

SainSmart DDS120
Status supported
Source code hantek-6xxx
Channels 2
Samplerate 50MHz
Analog bandwidth 20MHz
Vertical resolution 8bit
Triggers none (SW-only)
Input impedance 1MΩ‖25pF
Memory none
Display none
Connectivity USB
Website sainsmart.com

The SainSmart DDS120 is a USB-based, 2-channel oscilloscope with an analog bandwidth of 20MS/s and 50MS/s sampling rate.

This device appears to be a rebadge of the Rocktech BM102 (or vice versa). The lsusb is exactly the same, the PCB is exactly the same (both have a "656517" and "102LJT1402" silkscreen), and the components used appear to be the same as well.

The device was apparently created by someone named "buudai" in 2012 (also reflected in the lsusb and in the former buudai.com website).

See SainSmart DDS120/Info for more details (such as lsusb -v output) about the device.

Hardware

Or in newer hardware:

Photos

Saintsmart Dds120 Microchip 24lc64i Saintsmart Dds120 Microchip 24lc64i

Sainsmart Dds120 Back 1 Sainsmart Dds120 Back 1

Sainsmart Dds120 Front 3 Sainsmart Dds120 Front 3

Dds120 Top 20141024 0540p Dds120 Top 20141024 0540p

Saintsmart Dds120 Package Contents Saintsmart Dds120 Package Contents

Saintsmart Dds120 Mxt2088 Saintsmart Dds120 Mxt2088

Saintsmart Dds120 Sticker Saintsmart Dds120 Sticker

Sainsmart Dds120 Front 5 Sainsmart Dds120 Front 5

Saintsmart Dds120 Pcb Bottom Saintsmart Dds120 Pcb Bottom

Sainsmart Dds120 Box 2 Sainsmart Dds120 Box 2

Sainsmart Dds120 Back 2 Sainsmart Dds120 Back 2

Saintsmart Dds120 Connectors Saintsmart Dds120 Connectors

Sainsmart Dds120 Front 1 Sainsmart Dds120 Front 1

Saintsmart Dds120 Device Top Saintsmart Dds120 Device Top

Saintsmart Dds120 Usb Saintsmart Dds120 Usb

Saintsmart Dds120 Pcb Top Saintsmart Dds120 Pcb Top

Saintsmart Dds120 Nais 210eh 347 Saintsmart Dds120 Nais 210eh 347

Saintsmart Dds120 Device Bottom Saintsmart Dds120 Device Bottom

Saintsmart Dds120 Ams1117 3.3 Saintsmart Dds120 Ams1117 3.3

Dds120 Mugshot Dds120 Mugshot

Saintsmart Dds120 Fx2 Saintsmart Dds120 Fx2

Saintsmart Dds120 Ti Cd4052bm Saintsmart Dds120 Ti Cd4052bm

Sainsmart Dds120 Front 2 Sainsmart Dds120 Front 2

Sainsmart Dds120 Box 1 Sainsmart Dds120 Box 1

Sainsmart Dds120 Box 3 Sainsmart Dds120 Box 3

Sainsmart Dds120 Front 4 Sainsmart Dds120 Front 4

Protocol

We use an open-source firmware for this device (i.e., not the vendor firmware/protocol), hence we do not need to know the vendor protocol. There is some historic vendor firmware/protocol info for those interested, though.

Firmware

In order to use this device, the sigrok-firmware-fx2lafw (>= 0.1.4) firmware is required.

The firmware was originally written by Jochen Hoenicke (see README for details), thanks a lot!

Note: The firmware is not flashed into the device permanently! You only need to make it available in the usual place where libsigrok looks for firmware files, it will be used automatically (and "uploaded" to the Cypress FX2's SRAM every time you attach the device to a USB port).

Note: On Windows, you will have to assign the WinUSB driver via Zadig twice: the first time for the initial USB VID/PID the device has when attaching it via USB (04b4:602a or 04b5:602a, depending on which vendor driver is currently being used by the device), and a second time after the firmware has been uploaded to the device and the device has "renumerated" with a different VID/PID pair (1d50:608e).

See this section for technical details about the firmware/hardware.

Resources