Velleman PCSGU250

From sigrok
Revision as of 15:58, 30 July 2013 by ChristophF (talk | contribs)
Jump to navigation Jump to search
Velleman PCSU250

The [1] is an inexpensive USB-based oscilloscope. It has 2 channels, an analog bandwidth of 12MHz and 25MS/s sampling rate.

See Velleman PCSU250/Info for more details (such as lsusb -vvv output) about the device.

Hardware

Control logic

USB interface

  • inluded in the PIC


Analog frontend

Power

Trigger Level

  • 74HCT4051D 8-channel analog multiplexer/demultiplexer with 15 resistors, is that a R2R DAC??? I would guess this one is for the trigger level

Signal Generator

  • DAC0800LCM 8-Bit Digital-to-Analog Converter Settling Time 0.1 µs, does that mean max. 10Mhz Sample rate?
  • TL081C JFET OPAMP
  • lm6172 Dual High Speed, Low Power, Low Distortion Voltage Feedback Amplifiers 100Mhz GBW

Photos

Protocol

TODO.

Resources