After digging out my Digital Discovery from long term storage I wanted to verify that everything is still in working order so I followed the instructions (in the getting started section as it has been over a year since I used this device) for using the logic analyzer and was stumpdified to see that nothing was being recorded by the device.
For my test setup I connected pin 28 to DIN 0 (using the high speed cables) and then connected the GND pin (of pin connector 28 thru 31) to the GND connector for DIN 0. Next (following the instructions) I setup the pattern generator to output a Clock (using 1khz in parameter 1) and hit run. On the logic analyzer tab I setup DIN 0 (with a base of 1ms/div) using a trigger of Auto and a bus speed of 100MHz then hit run.
What I expected to see was the clock pattern (from the pattern generator tab) being captured on the logic analyzer but that is not what I received. What I actually received was no signal at all on DIN 0. I then repeated this process using DIN 1 thru 19 and received the same lack of signal.
Thinking that I was going crazy I swapped DINs 0-19 for Pins 24 thru 27 (as the input pins on logic analyzer tab) and bam....the expected clock signal is being captured.
Finally, I switched from using Pins 24 thru 27 (all the time keeping the output on pin 28) to using DINs 4 thru 23 and don't you know it....the expected clock signal is being captured.
So at this point I am stumped as to the reason behind DINs 0-19 not functioning while DINs 4-23 are. This device has had very little use over the past two years (as I switched companies and the new job does not require research things at home much) and even less use on the HSI pins.
As for the WaveForm software I am using version 3.18.1 on my Windows 10 64-bit OS (I even tried running the software as admin but that did not help)
BTW: To ensure that it was not a problem with the HSI cables, I also tried just connecting the input pin to the DIN pin(s) but still the same problem.
Does anyone have an idea of what might be going on there or perhaps a suggestion as to what to try next (if it comes down to it I guess I could write off DINs 0 thru 19 but that makes me start to have trust issues with this device)
Question
mmessuri
After digging out my Digital Discovery from long term storage I wanted to verify that everything is still in working order so I followed the instructions (in the getting started section as it has been over a year since I used this device) for using the logic analyzer and was stumpdified to see that nothing was being recorded by the device.
For my test setup I connected pin 28 to DIN 0 (using the high speed cables) and then connected the GND pin (of pin connector 28 thru 31) to the GND connector for DIN 0. Next (following the instructions) I setup the pattern generator to output a Clock (using 1khz in parameter 1) and hit run. On the logic analyzer tab I setup DIN 0 (with a base of 1ms/div) using a trigger of Auto and a bus speed of 100MHz then hit run.
What I expected to see was the clock pattern (from the pattern generator tab) being captured on the logic analyzer but that is not what I received. What I actually received was no signal at all on DIN 0. I then repeated this process using DIN 1 thru 19 and received the same lack of signal.
Thinking that I was going crazy I swapped DINs 0-19 for Pins 24 thru 27 (as the input pins on logic analyzer tab) and bam....the expected clock signal is being captured.
Finally, I switched from using Pins 24 thru 27 (all the time keeping the output on pin 28) to using DINs 4 thru 23 and don't you know it....the expected clock signal is being captured.
So at this point I am stumped as to the reason behind DINs 0-19 not functioning while DINs 4-23 are. This device has had very little use over the past two years (as I switched companies and the new job does not require research things at home much) and even less use on the HSI pins.
As for the WaveForm software I am using version 3.18.1 on my Windows 10 64-bit OS (I even tried running the software as admin but that did not help)
BTW: To ensure that it was not a problem with the HSI cables, I also tried just connecting the input pin to the DIN pin(s) but still the same problem.
Does anyone have an idea of what might be going on there or perhaps a suggestion as to what to try next (if it comes down to it I guess I could write off DINs 0 thru 19 but that makes me start to have trust issues with this device)
Thanks.
-- Michael --
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