SainSmart DDS120
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The SainSmart DDS120 is a USB-based, 2-channel oscilloscope with an analog bandwidth of 20MS/s and 48MS/s sampling rate.
See SainSmart DDS120/Info for more details (such as lsusb -v output) about the device.
- USB: Cypress CY7C68013A-100AXC (FX2LP) (datasheet)
- 256-byte I²C EEPROM: Microchip 24LC641 (datasheet)
- Crystal: 24MHz
- AD: AD8065ART-R2: (datasheet)
or in newer hardware
- AD: MXT2088 (datasheet)
- Opamp: Analog devices AD8065 (OPAMP)
- MUX: Texas Instruments CD4052B (2 x 1:4 MUX)
Photos
Device, top
Vendor Protocol
| Oscilloscope command | bRequest value | Notes |
|---|---|---|
| Set CH0 coupling | 0x24 | Possible values: 0x00, 0x08 (AC-coupling, DC-coupling). |
| Set CH1 coupling | 0x25 | Possible values: 0x20, 0x10 (AC-coupling, DC-coupling). |
| Set CH0 voltage range | 0x22 | Possible values: 0x08, 0x04, 0x00, 0x06, 0x02 (50mV, 100mV, 200mV, 500mV, 1-5V). |
| Set CH1 voltage range | 0x23 | Possible values: 0x20, 0x10, 0x00, 0x12, 0x02 (50mV, 100mV, 200mV, 500mV, 1-5V). |
| Set sampling rate | 0x94 | Possible values: 0x11, 0x01, 0x10 (240kHz, 2.4MHz, 48MHz). |
| Trigger oscilloscope | 0x33 | Possible values: 0x00 == start sampling. |
| Trigger oscilloscope | 0x60 | Possible values: 0x00 Generate sine wave. |
| Trigger oscilloscope | 0x61 | Possible values: 0x00 Generate triangle wave. |
| Trigger oscilloscope | 0x62 | Possible values: 0x00 Generate rectangle wave. |