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. > > 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? > > Unless you can see something I did wrong, the only thing I can do would > be to send a picture of the test setup so you can check to see if I > managed to screw up what I intended. > > Thanks again, > Mike To me it sounds like you did it correct. I will test myself next week. The hardware is at work. MvH Benjamin Larsson ------------------------------------------------------------------------------ _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
