calculator numconv function

sorry, when ı send my plot to calculator

I think you should use the analog to digital functions that were referenced in the other thread you posted in after this. The numConv is really for single valued text numbers and will convert them into a different number base. I don't think it's the right solution here.

Andrew

Numconv is for the single digitbase? My output is digital 3 bit.İ want to convert it to decimal. I think that verilogA model but since i i do not know verilogA, i can use calculator. Which function should İ use

But I want convert it to signed number

VT() will return a waveform of the bus values versus time - and these are voltages (which are floating point, unless this is some digital bus from a mixed-signal simulation?). You probably first need to convert that bus of analog voltages into a bus - which you can do via the Measurements->Analog to Digital in ViVA (you can choose whether signed or unsigned, and the radix) and then having plotted that, you can take the resulting bus and do Right Mouse->Send to Calculator or Send to ADE to add into your output measurements.

numConv is for dealing with a single text value (not a single digit) and I don't think that's what you want here. It's useful if you've (for example) taken the value of a digital bus at a specific time, and want to convert the base then - but not so useful for waveform data

Andrew.

VT() will return a waveform of the bus values versus time - and these are voltages (which are floating point, unless this is some digital bus from a mixed-signal simulation?). You probably first need to convert that bus of analog voltages into a bus - which you can do via the Measurements->Analog to Digital in ViVA (you can choose whether signed or unsigned, and the radix) and then having plotted that, you can take the resulting bus and do Right Mouse->Send to Calculator or Send to ADE to add into your output measurements.

numConv is for dealing with a single text value (not a single digit) and I don't think that's what you want here. It's useful if you've (for example) taken the value of a digital bus at a specific time, and want to convert the base then - but not so useful for waveform data

Andrew.

But i take digital output from the bus. İt does not analog signal.

Because l look the power spectral density at the output of the digital bus. İ think that can not look sperately them it will not correct result i should look the bus

It would seriously help if you actually wrote clear questions (and I recognise that English is probably not your first language). I cannot understand what you're asking here.

Andrew.

Thank much sir.My output 3 bit digital output which is the error correction network at the same. İt is a bus. İ must look at the power spectral density of my output. When i look pad of my output, it shows sperately graphic since 3 bit. But i want to look at the single plot so i want to convert it to decimal. At the same time, i will check my output because my output must be between -3 and 4 so i want convert my 3 bit digital output to decimal.

My circuit is digital

It's still rather unclear. Please show a plot of what the bus looks like when you plot it in ViVA. I assume you're running a simulation with the simulator being "ams"?

Regards,

Andrew

it is my 3 bit output. I convert it to signed decimal.I will check them and look them of psd in a single psd

OK, so the bus output are analog, not digital - the y-axis is in volts. So the approach you need to take is exactly as I described before - use Measurements->Analog to Digital to convert the analog bits into a digital bus (with your chosen radix). Then you probably want to convert that back into a voltage so that you can perform a PSD on it.

Here's an example of an A2D converter output which has been driven with a sine wave input.

I took the 8 digital bus signals shown at the top, and converted them to a bus using the form like this:

This gave the bus in the middle (below it is the expansion into the individual logic bits). If you zoom in, you'll see the numbers on the bus (note I picked. Unsigned Decimal because that's what my ADC would have produced, but the Radix can be signed Decimal too).

The bottom curve (in both plots) was the result of selecting "mybus" and using Measurements->Digital to Analog and converting it back into an analog waveform. That means you've now got an analog-like signal from your original digital bus (which was in volts rather than logic) and you can then do whatever signal processing you like on that.

Regards,

Andrew.