Search found 7 matches

by bunjatec
Tue Aug 07, 2012 8:13 am
Forum: USB PC Oscilloscopes
Topic: 2205MSO SPI decoding not working at high speed (2Mhz)
Replies: 9
Views: 8991

Re: 2205MSO SPI decoding not working at high speed (2Mhz)

This seems about right..
What was wrong?
by bunjatec
Fri Jun 22, 2012 4:17 pm
Forum: USB PC Oscilloscopes
Topic: 2205MSO SPI decoding not working at high speed (2Mhz)
Replies: 9
Views: 8991

Re: 2205MSO SPI decoding not working at high speed (2Mhz)

Hi, I tried a number of different timebases.. this was one of the first things I thought may have caused problems, but to no avail.. :( I have some other work to get on with for the next day or so, but will hopefully get back to this afterwards. I look forward to getting some response from the dev t...
by bunjatec
Thu Jun 21, 2012 11:46 am
Forum: USB PC Oscilloscopes
Topic: 2205MSO SPI decoding not working at high speed (2Mhz)
Replies: 9
Views: 8991

Re: 2205MSO SPI decoding not working at high speed (2Mhz)

200us/div as requested,
10MS/sec
can see waveforms clearly (and can read the data on them), but data decoding not even close.
by bunjatec
Wed Jun 20, 2012 11:16 am
Forum: USB PC Oscilloscopes
Topic: 2205MSO SPI decoding not working at high speed (2Mhz)
Replies: 9
Views: 8991

Re: 2205MSO SPI decoding not working at high speed (2Mhz)

Attached waveform as requested.

in the attached file the 4 signals are:
D0, CS
D1, SDI
D2, SD0
D3, SCLk
from the waveforms at 5.44us
should decode as:
SDO, AB,00,00,00
SDI, 00,00,00,29
by bunjatec
Tue Jun 19, 2012 2:22 pm
Forum: USB PC Oscilloscopes
Topic: 2205MSO SPI decoding not working at high speed (2Mhz)
Replies: 9
Views: 8991

2205MSO SPI decoding not working at high speed (2Mhz)

I have managed to get the SPI decoding to work with a clock at 200khz, but at 2 Mhz the decoding seems to have missed the packet. it recognises the start, but misses the clock. although this is clearly visible in the trace. at 200khz the decoding works fine, but the end of the last byte is missed, (...
by bunjatec
Thu Apr 26, 2012 11:28 am
Forum: USB PC Oscilloscopes
Topic: 2205MSO digital triggers
Replies: 1
Views: 2787

Re: 2205MSO digital triggers

found 6.6.23(RC) and it seems to have fixed this bug..
by bunjatec
Thu Apr 26, 2012 10:32 am
Forum: USB PC Oscilloscopes
Topic: 2205MSO digital triggers
Replies: 1
Views: 2787

2205MSO digital triggers

I seem to be having trouble getting a digital signal to trigger any kind of acquisition. analogue works fine though. I have an IIC bus with digital probes on it, and I've put analogue probe A on SDA to trigger it for the moment. But no matter what the settings digital trigger settings in PicoScope (...