Difference between revisions of "Velleman PCSGU250"

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Line 14: Line 14:
'''USB interface'''
'''USB interface'''
* inluded in the PIC
* inluded in the PIC




Line 34: Line 31:
*[http://www.b-kainka.de/Daten/OPV/tl081crev1.pdf TL081C] JFET OPAMP
*[http://www.b-kainka.de/Daten/OPV/tl081crev1.pdf TL081C] JFET OPAMP
* [http://www.ti.com/product/lm6172 lm6172] Dual High Speed, Low Power, Low Distortion Voltage Feedback Amplifiers 100Mhz GBW
* [http://www.ti.com/product/lm6172 lm6172] Dual High Speed, Low Power, Low Distortion Voltage Feedback Amplifiers 100Mhz GBW
== FROM HERE ON ONLY COPY&PASTE, TO BE CORRECTED ==
'''Channel triggers'''
* [http://www.nxp.com/products/logic/buffers_inverters_drivers/74LVC07AD.html NXP 74LVC07AD] Hex non-inverting buffers
* [http://www.ti.com/product/tlc5620 Texas Instruments TLC5620] 8-bit quad DAC
* [http://www.ti.com/product/tlc372 Texas Instruments TLC372] dual differential comparator


== Photos ==
== Photos ==

Revision as of 15:50, 30 July 2013

File:Velleman PCSU250.jpg
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