Digital outputs won't plot properly
Closed this issue · 3 comments
Attached are two VCOs. One VCO is "analog" and the other "digital". One has an ADC Bridge and the second a DAC Bridge but that doesn't seem to be the issue since the netlists work in ngspice via DuSpice.
Neither "digital" output will plot properly in Qucs-S, only the "analog" outputs will plot properly. Digital time-scales are wrong.
Using DuSpice, all outputs plot with the proper time-scale.
The "digital" outputs and the analog output of the D-A "misbehave" if a resistor load is used BUT they at least appear to have the proper time-scale when plotted in Qucs-S.
https://sourceforge.net/p/ngspice/discussion/120973/thread/d7eb851b6c/?limit=25#39ed
The "digital" time-scale is an order of magnitude less than the "analog" time-scale.
Workaround was to add a D-A Bridge to VCO digital output. I also made an A-D version and Digital 1/0s so the XSPICE P-F detector could be simulated.
Time-Base compression on "digital" outputs is still an issue. May require help from ngspice guys.
Giles @gatk555 says he has seen it as well.
https://sourceforge.net/p/ngspice/discussion/120973/thread/f8e612aa99/?limit=25#0b62
