On Wed, Aug 3, 2016 at 7:24 PM Benjamin Larsson <[email protected]> wrote:
> On 08/03/2016 05:42 AM, Mike Meyer wrote: > > On Tue, Aug 2, 2016 at 6:07 PM Benjamin Larsson <[email protected] > > <mailto:[email protected]>> wrote: > > > > Ok, http://sigrok.org/wiki/HT_USBee-AxPro has links to the > datasheets > > for the adc, use the device on itself to see if there are a clock > signal > > on the clock pin. > > > > > > Ok, I tried this and saw no sign of a clock. I'm a software guy, and way > > beyond my comfort level, so I may have screwed something up. In fact, > > given that I ran the same setup on the CWave software and didn't see a > > signal there either, I'm pretty sure I did. But I 'm going to describe > > the setup in excruciating detail so you can check my work. > > > > I tied a signal generator putting out a 3.7V square wave sweeping > > between 1 and 10 KHz to A0 and D0, so I would see if the A input decided > > to work and verify that at least one D input was working. > > > > I ran a probe on pin 12 (clock, same side, other end of the chip from > > pin 1) on the TI 5510 (the ADC) to D1. > > > > Ran sigrok to collect 50M samples at 12MHz. > > > > I could see the sweep fine on D0. A0 and A1 both just stayed high. > What is A0 and A1? The hardware only has one analogue channel. > A typo. That should be A0 and D1. I.e. - no analog signal, no clock signal. > > As mentioned, I got the same result using the CWav USBee Suite. Possibly > > they do things differently and this is expected there, but I feel like > > this means my test setup was broken. I did check connectivity from the > > board side of the probe connector to the end of the probe after the > > tests, and that was fine. > Did you get analogue readings with the CWav USBee Suite? > Yes, I did. No clock signal on it, but the two waveform inputs (A0 and D0) both showed the input signal. > To me it sounds like you did it correct. I will test myself next week. > The hardware is at work. > Cool. Let me know if there's anything I can do to help with that, and thanks for looking into it.
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