On Tue, Aug 2, 2016 at 6:07 PM Benjamin Larsson <[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. 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. 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
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