Difference between revisions of "Velleman PCSGU250"

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[[File:VELLEMANN_PCSGU250_FRONT.jpg|thumb|right|Velleman PCSU250]]
[[File:VELLEMANN_PCSGU250_FRONT.jpg|thumb|right|Velleman PCSU250]]


The [http://www.velleman.eu/products/view/?id=377622] is an inexpensive USB-based oscilloscope. It has 2 channels, an analog bandwidth of 12MHz and 25MS/s sampling rate.
The [http://www.velleman.eu/products/view/?id=377622 PCSU250] 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.
See [[Velleman PCSU250/Info]] for more details (such as '''lsusb -vvv''' output) about the device.
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File:VELLEMANN_PCSGU250_SIGNAL_GEN.JPG|<small>signal generator or trigger circuit?</small>
File:VELLEMANN_PCSGU250_SIGNAL_GEN.JPG|<small>signal generator or trigger circuit?</small>
File:VELLEMANN_PCSGU250_OUTPUT_STAGE.jpg|<small>output stage</small>
File:VELLEMANN_PCSGU250_OUTPUT_STAGE.jpg|<small>output stage</small>
File:VELLEMANN_PCSGU250_RUSTY_METAL.jpg|<small>chunk of rusty metal for weighte</small>
File:VELLEMANN_PCSGU250_RUSTY_METAL.jpg|<small>Chunk of rusty metal for weight</small>
File:VELLEMANN_PCSGU250_FRONT.jpg|<small>output stage</small>
File:VELLEMANN_PCSGU250_FRONT.jpg|<small>output stage</small>
</gallery>
</gallery>

Revision as of 19:12, 30 July 2013

Velleman PCSU250

The PCSU250 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. Vellemann PCSGU250/USB Control]

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

https://bitbucket.org/abbradar/scope/src http://forum.velleman.eu/viewtopic.php?f=10&t=3586&start=15 https://app.box.com/s/cxybc16r7o5kqb65u6ct